TweetFollow Us on Twitter

Random Access Files
Volume Number:2
Issue Number:9
Column Tag:Basic School

Random Access Files

By Dave Kelly, MacTutor Editorial Board

There are two types of data files that can be created and used by your MS Basic program: sequential files and random access files. Sequential files are used more often because they are easy to create, but random access files are more flexible and data can be located faster. A discussion of sequential file I/O operation begins on page 45 of your MS Basic manual (ver. 2.0 or greater). Random Access File I/O starts on page 48. Before we begin our discussion of random access file I/O, I suggest that you refer to those pages.

The purpose of this column is to help you develop an understanding of random access I/O and how to use it in your own programs. It is very easy to understand how data is structured in sequential files. It requires more work to organize a random access file. The organization of the random access file is up to you. I'll try to outline some steps you can use to help organize your file.

First, you should decide just what data you have to store. For example, if you were setting up a mail list database you would need one field each for name, address, city-state, and zipcode. Next decide how many characters will be allowed for each field (25 for name, 30 for address, 25 for city-state, and 5 for zipcode). The total length of an individual record would then be 85 characters.

Now decide how many individual records you expect to have in the file. If you don't require too many records and don't expect to ever expand the file, a sequential file many be suitable. The is especially true if you have a lot of RAM to work with and a comparatively small data file. There are some advantages and disadvantages to using a sequential file this way. With a sequential file, all records are read into memory so the disk is only accessed once. The program can then operate on the data much faster than if it had to access the disk for each record. However, if the data had been changed at all, the entire file would have to be stored back to the disk or the changes would be lost. In the event of a power failure or some other system crash, a random access file would contain all the changes, but a sequential file would not. Generally as files get larger, they are better handled by random access methods. A large sequential file could take quite a bit of time just to read and write to the disk.

Next you should consider how you want to access each record of your random access file. You may want to be able to search for a name or sort the file by zip code. A long and tedious way to do this would be to read through each and every record until the desired record is found. If the user knows exactly which record to read then the access time may be reduced significantly. One way to do this would be to create an index file. For example, if you wanted to find a specific record and you know the contents of one of the fields, you could look in the index file to find the matching field and record number. For a mail list database you might set up an index file containing all of the names and the record numbers corresponding to the names. Index files may be sequential or random access (for relation databases) but should contain as few fields as possible to optimize data access time. If the index is sequential it should be kept in memory and updated as the random file is updated.

Figure 1

If indexes are used, some thought must be taken as to updating and changing the index file. If a record is to be deleted, you might want to delete the index, thus removing any reference to the random access file record. This leaves an available record for late addition of a new record (if you keep track of which records have been deleted). If your file isn't expected to change very much you may not mind the wasted space taken up by the deleted record. Ideally, you should keep track of the locations of deleted records so that they can be reused when new records are added. Another way to get rid of the wasted records (if you don't want to go to the trouble of keeping track of the deleted records) is to write a program to do "Garbage Collection".

Fig. 2 Garbage Collection

A "Garbage Collection" program reads all undeleted records and writes them to a new file. You only have to do "Garbage Collection" when a lot of records have been deleted and you need more space to add new records. "Garbage Collection" might be ok to use if it is automatically performed (with no user intervention). It is NOT desirable for the user of your program to have to keep track of this kind of file handling (when to collect garbage and when not to).

When a record is added to the datafile, a new index entry should be created and the new record should be added to the random access file (either as a new record or replacing a previously deleted record). If an existing record is edited and changed the index file should be updated accordingly. You may want to sort the index file before writing it to the disk. Be sure to save the index program before quiting the program.

Now let's take a look at how the random access file is structured. When you open a file in basic, a buffer is allocated for each file opened. For random access files the buffer should be set equal to the length of one record ( the default buffer size is 128 bytes). It is through this buffer that basic reads and writes to the disk. To help you understand what a random access file "looks like", let's create a sample file to examine. The Random Access File program included with this column will create a sample random access file that we can analyze. It creates a random file named "Sample RA File" with a length of 64 bytes. One advantage of MS Basic random access files is that random access files require less room on the disk, since Basic stores them in a packed binary format. Sequential files are stored as a series of sequential ASCII characters.

To facilitate the conversion of numbers to the packed binary format we must use the MKI$,MKS$,MKD$ commands. To unconvert the numbers we must use CVI,CVS,CVD commands. These are somewhat easy to remember if you think of the MK as MaKe and the CV as ConVert. Thus if we want to store an integer number we use MKI$ to MaKe an Integer string and use CVI to ConVert the Integer back again. The sample file shows an example of how to use these MaKe and ConVert commands for integers, single precision and double precision numbers.

As I already mentioned, when the file is opened a buffer is allocated (in this case the length of all the fields is 64). The fields that we want to use must be memory mapped to the buffer area. This is accomplished with the FIELD statement. You may use as many FIELD statements as you like, however, each field statement starts defining the fields starting at the beginning of the buffer. If you define all your fields on one line (one FIELD statement) then you won't have any problem, but if you have more fields than you want to put in one statement then you will want to use a second FIELD statement. The trick (which the manual does not show you how to do) is to define a dummy variable with the accumulative length of all the previous field statements before defining your next field. In the sample program the first FIELD statement defines three number fields with a total of 14 bytes. (Integer fields are converted to 2 bytes, single precision to 4 bytes, and double precision to 8 bytes). In the second FIELD statement a dummy string is marking the first part of the buffer which has already been defined so that the next field will begin after the previously defined fields. If you didn't know to do this you could have some strange effects when you read your file back as the field definitions would overlap.

The next important thing that the program must do is to put our data into the buffer so it can be written to a record on the disk. This is accomplished with the LSET or RSET statements. LSET will left justify the string within the defined field length (a variable might be actually shorter than the field has available), The RSET statement will right justify the string within the field. Every field must be set into the buffer with one of these commands. You should use a different variable in defining the fields and setting into the buffer than you use to manipulate your data. Be sure that you don't use a defined field in an INPUT or LET type statement. This will redefine the location that the variable points to (we want it to put to the buffer area). If a record is read from the disk, all the fields defined in the buffer area will contain the data stored on the disk for that record. You only have to reset those fields that you want to change. All the rest of the fields will be left untouched until you read another record into the buffer or set a new value into the field.

To store a record to disk use PUT [# ]filenumber [,record-number ]. To read a record from the disk use GET [# ]filenumber [,record-number ]. The PUT, GET statements read and write the entire record in the buffer. You use PUT after you use the MaKe string statements and use ConVert statements after using GET. You can find more information on PUT and GET in your Basic manual (pages 220 and 146). Run the sample program to create a random access file we can examine.

The second program included with this column is a random access utility that I developed to analyze the data stored in a random access file. I have been saved from alot of problems with programs like this in the past. I have been able to repair damaged random access files and determine what buggy random programs were doing with utilities like this one.

The utility program opens with a menu which will allow you to open your file. Choosing open from the File menu brings up the standard getfile dialog box from which you can choose the file you want to examine. (You should choose "Sample RA File" for this example). Next, the program asks for the length of the random access file record. If you wrote the program you should have this available, however, if you don't know what it is you can guess. The sample file is 64 bytes so enter a 64 for the length (then click OK).

The file menu now has made active a menu item named Edit in the File menu (this may be confusing - it is NOT the Edit menu). Selecting Edit from the File menu will bring up a prompt for the record number you want to read. Enter a '1' to read record number one (the sample file only has one record) (click OK). Next the record is read into the buffer and displayed on the screen. The first EDIT FIELD shown displays the file as it looks. Note that some of the ASCII characters are invisible and can't be seen in the EDIT FIELD. The second EDIT FIELD shows the equivalent ASCII representation of the record. Invisible characters can be seen (for example a '0' is a null character). Either of these two fields can be modified or examined as you like.

The hardest thing to analyze is the numbers which have been converted to strings with the MaKe statements. To make this somewhat easier (though not foolproof) the program provides a way to convert your numbers from strings to numbers and numbers to strings to see how these ConVert/MaKe statements work. The third EDIT FIELD provides the way to enter the number or string to be converted. For example, enter a 5 in the field and select MKI$(integer) Convert from the Convert menu. The integer 5 will be converted to the packed binary format string. Note that the first field stored by our sample file is '0, 5' which was the two byte string made from the integer 5 (see the sample program if you don't follow this). The converted string has been placed in the third EDIT FIELD. The characters there are invisible (0 and 5 ASCII do not print). If you select CVI(string) Convert (2-bytes) from the Convert menu, the string will be converted back to the integer equivalent and displayed.

The rest is up to you as to what you want to do with the utility. It is possible to modify data in the random record by typing the change in one of the first two EDIT FIELDs. Then select the button at the top of the window to write the record. When you select 'OK', the EDIT FIELD which which is active (the EDIT FIELD which the cursor is blinking) will be stored in place of the record. It is possible to convert a number in the Convert EDIT FIELD then COPY the contents of the EDIT FIELD and PASTE it into the text in the first EDIT FIELD. It may be somewhat difficult to COPY/PASTE invisible characters (because you can't see them to select them) although it is possible. I recommend that you display the converted ASCII equivalent and enter the ASCII characters into the second EDIT FIELD and save the record to the disk.

That's all there is on random access files. Hopefully the utility will help you to learn some things by experimentation about random access. Any questions may be directed to myself via MacTutor.


' Random Access File
' ©MacTutor 1986
' This program creates a sample Random Access File

Integer%=5: Single!=32769!: Double#=123456789#
Title$="MacTutor, The Macintosh Programming Journal"
OPEN "Sample RA File"  AS #1 LEN=64
    FIELD #1,2 AS I$,4 AS S$,8 AS D$
    FIELD #1,14 AS Dummy$,50 AS T$

    TEXTFACE(1)
    PRINT "Our Variables are: Integer%=";Integer%;"Single!=";Single!
    PRINT "Double#=";Double#
    PRINT "Title$=";Title$
    TEXTFACE(0)
WRIT:    PRINT"We will now save them to record 1 (record length=64)."
    LSET I$=MKI$(Integer%)
    LSET S$=MKS$(Single!)
    LSET D$=MKD$(Double#)
    LSET T$=Title$
    PUT #1,1
CLOSE #1
    PRINT"Now clear all variables... and print them:"
    Integer%=0:Single!=0:Double#=0:Title$=""
    TEXTFACE(1)
    PRINT "Our Variables are: Integer%=";Integer%;"Single!=";Single!
    PRINT "Double#=";Double#
    PRINT "Title$=";Title$
    TEXTFACE(0)
    PRINT "Now read them back again..."
OPEN "Sample RA File"  AS #1 LEN=64
    FIELD #1,2 AS I$,4 AS S$,8 AS D$ , 50 AS T$
    GET #1,1
    LET Integer%=CVI(I$)
    LET Single!=CVS(S$)
    LET Double#=CVD(D$)
    LET Title$=T$
    PRINT"Now close the file and print them all..."
CLOSE #1
TEXTFACE(1)
PRINT "Our Variables are: Integer%=";Integer%;"Single!=";Single!
PRINT"Double#=";Double#
PRINT "Title$=";Title$
TEXTFACE(0)
END


' Professor Mac's Random Access Utility
' ©MacTutor 1986
' By Dave Kelly

OPTION BASE 1
DEFINT a-z
WINDOW 1,"",(2,25)-(510,335),3
GOSUB WindowHeader
Recordnumber=1

MENU 1,0,1,"File"
MENU 1,1,1,"Open"
MENU 1,2,0,"Close"
MENU 1,3,0,"Edit"
MENU 1,4,1,"Quit"
MENU 3,0,0,""
MENU 4,0,0,""
MENU 5,0,0,""
False=0: True= NOT False
Fileopen = False

ON MENU GOSUB MenuEvent
MENU ON

WaitForEvent: GOTO WaitForEvent

MenuEvent:
    MenuNumber = MENU(0)
    MenuItem = MENU(1):MENU
    ON MenuNumber GOSUB Filemenu,Editmenu,Convertmenu
RETURN

Filemenu:
    ON MenuItem GOSUB OpenFile,CloseFile,FindRecord,Quititem
RETURN
    
Editmenu:
RETURN

WindowHeader:
    TEXTFONT(2):TEXTSIZE(14):TEXTFACE(1)
    LOCATE 1,15:PRINT"Random Access Utility"
    TEXTSIZE(12):TEXTFACE(0)
RETURN

Quititem:
    IF Fileopen = True THEN GOSUB CloseFile
    MENU RESET
    WINDOW CLOSE 1
    END

OpenFile:
    Filename$=FILES$(1)
    IF Filename$="" THEN GOSUB WindowHeader: RETURN
    LOCATE 4,1:PRINT"  Enter the length of your Random Access File:"
    GOSUB WindowHeader
    EDIT FIELD 1,"128",(300,48)-(350,63),1,1
    BUTTON 1,1,"OK",(315,130)-(365,180)
    GOSUB Loop
    Recordlength=VAL(EDIT$(1))
    IF Recordlength >32767 OR Recordlength <=0 THEN GOTO       OpenFile
    BUTTON CLOSE 1
    EDIT FIELD CLOSE 1:CLS
    OPEN Filename$ AS #1 LEN=Recordlength
    FIELD #1,Recordlength AS Random$

Setup:
    GOSUB WindowHeader
    Fileopen=True
    MENU 1,1,0
    MENU 1,2,1
    MENU 1,3,1
    RETURN

CloseFile:
    Fileopen=False
    MENU 1,1,1
    MENU 1,2,0
    MENU 1,3,0
    CLOSE #1
    IF MenuItem <>4 THEN GOSUB WindowHeader
    RETURN
    
GetRecord:
    IF Recordnumber=0 THEN PRINT "Record # 0 does not    exist":RETURN
        GET #1,Recordnumber
        R$=Random$
RETURN

StoreRecord:
        LSET Random$=R$
        PUT #1,Recordnumber
RETURN

FindRecord:
    CLS
    LOCATE 4,1:PRINT"Enter Record Number to find:"
    EDIT FIELD 1,STR$(Recordnumber),(200,48)-(250,63),1,1
    BUTTON 1,1,"OK",(315,130)-(365,180)
    GOSUB Loop
    Recordnumber=VAL(EDIT$(1))
    LOCATE 5,1
    IF Recordnumber<1 OR Recordnumber > 16777215# THEN PRINT   "Number 
out of range":BEEP:FOR i=1  TO 100:NEXT:GOTO FindRecord
    GOSUB GetRecord
    EDIT FIELD CLOSE 1
EditRecord:
    MENU ON
    CLS:GOSUB WindowHeader
    BUTTON CLOSE 1
    GOSUB DecodeASCII
    PRINT "Current Record is #";Recordnumber
    LOCATE 17,1:PRINT "Conversion string:"
    TEXTFONT(4)
    EDIT FIELD 3,"",(10,280)-(90,295),2,1
    EDIT FIELD 2,ASCII$,(10,130)-(485,250),1,1
    EDIT FIELD 1,R$,(10,40)-(485,125),2,1
    TEXTFONT(2)
    BUTTON 1,1,"OK",(450,255)-(500,305)
    BUTTON 2,1,"Write record after Edit",(275,22)-(450,37),3:b2=False
    MENU 3,0,1,"Convert"
    MENU 3,1,1,"CVI(string) Convert (2-bytes)"  'Convert 2-byte string
    MENU 3,2,1,"CVS(string) Convert (4-bytes)" 'Convert 4-byte string
    MENU 3,3,1,"CVD(string) Convert (8-bytes)" 'Convert 8-byte string
    MENU 3,4,1,"MKI$(integer) Convert" 'Convert integer
    MENU 3,5,1,"MKS$(single-precision) Convert" 'Convert       single-precision
    MENU 3,6,1,"MKD$(double-precision) Convert" 'Convert       double-precision
    i=1
    EditLoop:
        d=DIALOG(0)
        IF d=1 THEN buttonpushed=DIALOG(1):IF buttonpushed=1 THEN 
 EditDone ELSE GOSUB Switch
        IF d=2 THEN i=DIALOG(2)
        IF d=6 AND i=1 THEN EditDone
        IF d=7 THEN i=(i MOD 2)+1:EDIT FIELD i
    GOTO EditLoop
EditDone:
    R$=EDIT$(1)
    IF i=2 THEN ASCII$=EDIT$(2): GOSUB EncodeASCII
    IF b2 = True THEN GOSUB StoreRecord
    EDIT FIELD CLOSE 1
    EDIT FIELD CLOSE 2
    EDIT FIELD CLOSE 3
    BUTTON CLOSE 1:BUTTON CLOSE 2
    MENU 3,0,0,""
    CLS:GOSUB WindowHeader
    RETURN

Convertmenu:
    x#=FRE(0)
    MENU OFF:TEXTFONT(4)
    Convert$=EDIT$(3)
    LOCATE 17,18:PRINT STRING$(35," ")
    LOCATE 18,18:PRINT STRING$(35," "):LOCATE 17,18
    ON MenuItem GOSUB CVIconvert, CVSconvert, CVDconvert,      MKIconvert, 
MKSconvert,MKDconvert
    MENU ON:TEXTFONT(2)
    RETURN
    
CVIconvert:
    IF LEN(Convert$)<>2 THEN PRINT"Can't convert";       LEN(Convert$);"bytes.":RETURN
    IntNumber%=CVI(Convert$)
    PRINT "CVI(";CHR$(34);Convert$;CHR$(34);")=";IntNumber%
RETURN

CVSconvert:
    IF LEN(Convert$)<>4 THEN PRINT"Can't convert";       LEN(Convert$);"bytes.":RETURN
    SingleNumber!=CVS(Convert$)
    PRINT "CVS(";CHR$(34);Convert$;CHR$(34);")=";SingleNumber!
RETURN

CVDconvert:
    IF LEN(Convert$)<>8 THEN PRINT"Can't convert";       LEN(Convert$);"bytes.":RETURN
    DoubleNumber#=CVD(Convert$)
    PRINT "CVD(";Convert$;")=";DoubleNumber#
RETURN

MKIconvert:
    IF VAL(Convert$)<-32767 OR VAL(Convert$)>32767 THEN PRINT  "Number 
too big!":RETURN
    IntNumber%=VAL(Convert$)
    NewConvert$=MKI$(IntNumber%)
    EDIT FIELD 3,NewConvert$,(10,280)-(90,295)
    PRINT "MKI$(";Convert$;")= ASCII:";
    PRINT USING " ###";ASC(MID$(NewConvert$,1,1)),       ASC(MID$(NewConvert$,2,1))
RETURN

MKSconvert:
    IF VAL(Convert$)<-1.18E-38 OR VAL(Convert$)>3.3999E+38 THEN 
 PRINT "Number too big!":RETURN
    SingleNumber!=VAL(Convert$)
    NewConvert$=MKS$(SingleNumber!)
    EDIT FIELD 3,NewConvert$,(10,280)-(90,295)
    PRINT "MKS$(";Convert$;")= ASCII:";
    PRINT USING " ###";ASC(MID$(NewConvert$,1,1)),       ASC(MID$(NewConvert$,2,1));
    PRINT USING " ###";ASC(MID$(NewConvert$,3,1)),       ASC(MID$(NewConvert$,4,1))
RETURN

MKDconvert:
    IF VAL(Convert$)<-2.23D-308 OR VAL(Convert$)>1.789999D+308 
 THEN PRINT "Number too big!":RETURN
    DoubleNumber#=VAL(Convert$)
    NewConvert$=MKD$(DoubleNumber#)
    EDIT FIELD 3,NewConvert$,(10,280)-(90,295)
    PRINT "MKD$(x)= ASCII:";
    PRINT USING " ###";ASC(MID$(NewConvert$,1,1)),       ASC(MID$(NewConvert$,2,1));
    PRINT USING " ###";ASC(MID$(NewConvert$,3,1)),       ASC(MID$(NewConvert$,4,1))
    LOCATE 18,33
    PRINT USING " ###";ASC(MID$(NewConvert$,5,1)),       ASC(MID$(NewConvert$,6,1));
    PRINT USING " ###";ASC(MID$(NewConvert$,7,1)),       ASC(MID$(NewConvert$,8,1))
RETURN

Switch:
    b2=NOT b2
    IF b2=True THEN BUTTON 2,2 ELSE BUTTON 2,1
    RETURN
    
Loop:
    d=DIALOG(0)
    IF d=1 THEN Done
    IF d=6 THEN Done
    GOTO Loop
Done:
RETURN

DecodeASCII:
    ASCII$=""
    FOR i=1 TO Recordlength
        ASCIInum$=STR$(ASC(MID$(R$,i,1)))+","
        IF LEN(ASCIInum$)=2 THEN ASCIInum$=ASCIInum$
        IF LEN(ASCIInum$)=3 THEN ASCIInum$=ASCIInum$
        ASCII$=ASCII$+ASCIInum$
    NEXT i
    RETURN
    
EncodeASCII:
    R$="":commaposition=1
    FOR i=1 TO Recordlength
        commaplace=INSTR(commaposition,ASCII$,",")
        ASCIInum$=MID$(ASCII$,commaposition,commaplace-1)
        commaposition=commaplace+1
        R$=R$+CHR$(VAL(ASCIInum$))
    NEXT i
    RETURN

Basic Compiler Update News

MacTutor is keeping you up to date on the latest developments of the new Basic products that have been released. There are some new developments which you should be made aware of. Refer to the August 1986 MacTutor for the preliminary review of these products. The status (as of this time) of all of the products we have reviewed is:

MS BASIC (version 2.10): Not a word. Rumors have it that Microsoft is making improvements, including the compiler. No word on when or what.

PCMacBasic: Major Improvements are in the works. I have not yet seen an update.

Softworks Basic: I don't know if any improvements are being made.

True Basic: Improvements are in the works.

ZBasic (version 3.02b) : Zedcor, Inc. has corrected several of the bugs we spoke about in our review and already sent me an updated (beta) copy. (Thank you!) Specifically:

Z-Basic Enhancements

• Files can now be located in any folder by volume

• The Directory command now works if you specify the pathname (volume) as DIR ZBASIC DISK:Z FOLDER: Z FILENAME. DIR 1 and DIR 2 did not work. The way it is right now you need to know the name (exact spelling) to do a directory command.

• Eject 1 and Eject 2 now works

• You can specify the volume for the filename you want to run with the run statement. RUN filename,vol % This means that you can now run any application from any HFS folder with the RUN statement. This is not documented in the version of the manual that I have.

• The mouse clicks in window title bars now works properly. They didn't fix that for the edit menu in the ZBasic compiler program yet though.

• The default window will not appear in your standalone application if you use the WINDOW OFF statement at the beginning of your program.

Even more improvements/enhancements are in the works so keep watching here for update information.

 
AAPL
$111.78
Apple Inc.
-0.87
MSFT
$47.66
Microsoft Corpora
+0.14
GOOG
$516.35
Google Inc.
+5.25

MacTech Search:
Community Search:

Software Updates via MacUpdate

LibreOffice 4.3.5.2 - Free Open Source o...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
CleanApp 5.0.0 Beta 5 - Application dein...
CleanApp is an application deinstaller and archiver.... Your hard drive gets fuller day by day, but do you know why? CleanApp 5 provides you with insights how to reclaim disk space. There are... Read more
Monolingual 1.6.2 - Remove unwanted OS X...
Monolingual is a program for removing unnecesary language resources from OS X, in order to reclaim several hundred megabytes of disk space. It requires a 64-bit capable Intel-based Mac and at least... Read more
NetShade 6.1 - Browse privately using an...
NetShade is an Internet security tool that conceals your IP address on the web. NetShade routes your Web connection through either a public anonymous proxy server, or one of NetShade's own dedicated... Read more
calibre 2.13 - Complete e-library manage...
Calibre is a complete e-book library manager. Organize your collection, convert your books to multiple formats, and sync with all of your devices. Let Calibre be your multi-tasking digital librarian... Read more
Mellel 3.3.7 - Powerful word processor w...
Mellel is the leading word processor for OS X and has been widely considered the industry standard since its inception. Mellel focuses on writers and scholars for technical writing and multilingual... Read more
ScreenFlow 5.0.1 - Create screen recordi...
Save 10% with the exclusive MacUpdate coupon code: AFMacUpdate10 Buy now! ScreenFlow is powerful, easy-to-use screencasting software for the Mac. With ScreenFlow you can record the contents of your... Read more
Simon 4.0 - Monitor changes and crashes...
Simon monitors websites and alerts you of crashes and changes. Select pages to monitor, choose your alert options, and customize your settings. Simon does the rest. Keep a watchful eye on your... Read more
BBEdit 11.0.2 - Powerful text and HTML e...
BBEdit is the leading professional HTML and text editor for the Mac. Specifically crafted in response to the needs of Web authors and software developers, this award-winning product provides a... Read more
ExpanDrive 4.2.1 - Access cloud storage...
ExpanDrive builds cloud storage in every application, acts just like a USB drive plugged into your Mac. With ExpanDrive, you can securely access any remote file server directly from the Finder or... Read more

Latest Forum Discussions

See All

Make your own Tribez Figures (and More)...
Make your own Tribez Figures (and More) with Toyze Posted by Jessica Fisher on December 19th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
So Many Holiday iOS Sales Oh My Goodness...
The holiday season is in full-swing, which means a whole lot of iOS apps and games are going on sale. A bunch already have, in fact. Naturally this means we’re putting together a hand-picked list of the best discounts and sales we can find in order... | Read more »
It’s Bird vs. Bird in the New PvP Mode f...
It’s Bird vs. Bird in the New PvP Mode for Angry Birds Epic Posted by Jessica Fisher on December 19th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Telltale Games and Mojang Announce Minec...
Telltale Games and Mojang Announce Minecraft: Story Mode – A Telltale Games Series Posted by Jessica Fisher on December 19th, 2014 [ permalink ] | Read more »
WarChest and Splash Damage Annouce Their...
WarChest and Splash Damage Annouce Their New Game: Tempo Posted by Jessica Fisher on December 19th, 2014 [ permalink ] WarChest Ltd and Splash Damage Ltd are teaming up again to work | Read more »
BulkyPix Celebrates its 6th Anniversary...
BulkyPix Celebrates its 6th Anniversary with a Bunch of Free Games Posted by Jessica Fisher on December 19th, 2014 [ permalink ] BulkyPix has | Read more »
Indulge in Japanese cuisine in Cooking F...
Indulge in Japanese cuisine in Cooking Fever’s new sushi-themed update Posted by Simon Reed on December 19th, 2014 [ permalink ] Lithuanian developer Nordcurrent has yet again updated its restaurant simulat | Read more »
Badland Daydream Level Pack Arrives to C...
Badland Daydream Level Pack Arrives to Celebrate 20 Million Downloads Posted by Ellis Spice on December 19th, 2014 [ permalink ] | Read more »
Far Cry 4, Assassin’s Creed Unity, Desti...
Far Cry 4, Assassin’s Creed Unity, Destiny, and Beyond – AppSpy Takes a Look at AAA Companion Apps Posted by Rob Rich on December 19th, 2014 [ permalink ] These day | Read more »
A Bunch of Halfbrick Games Are Going Fre...
A Bunch of Halfbrick Games Are Going Free for the Holidays Posted by Ellis Spice on December 19th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »

Price Scanner via MacPrices.net

The Apple Store offering free next-day shippi...
The Apple Store is now offering free next-day shipping on all in stock items if ordered before 12/23/14 at 10:00am PT. Local store pickup is also available within an hour of ordering for any in stock... Read more
It’s 1992 Again At Sony Pictures, Except For...
Techcrunch’s John Biggs interviewed a Sony Pictures Entertainment (SPE) employee, who quite understandably wished to remain anonymous, regarding post-hack conditions in SPE’s L.A office, explaining “... Read more
Holiday sales this weekend: MacBook Pros for...
 B&H Photo has new MacBook Pros on sale for up to $300 off MSRP as part of their Holiday pricing. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1699... Read more
Holiday sales this weekend: MacBook Airs for...
B&H Photo has 2014 MacBook Airs on sale for up to $120 off MSRP, for a limited time, for the Thanksgiving/Christmas Holiday shopping season. Shipping is free, and B&H charges NY sales tax... Read more
Holiday sales this weekend: iMacs for up to $...
B&H Photo has 21″ and 27″ iMacs on sale for up to $200 off MSRP including free shipping plus NY sales tax only. B&H will also include a free copy of Parallels Desktop software: - 21″ 1.4GHz... Read more
Holiday sales this weekend: Mac minis availab...
B&H Photo has new 2014 Mac minis on sale for up to $80 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 1.4GHz Mac mini: $459 $40 off MSRP - 2.6GHz Mac mini: $629 $70 off MSRP... Read more
Holiday sales this weekend: Mac Pros for up t...
B&H Photo has Mac Pros on sale for up to $500 off MSRP. Shipping is free, and B&H charges sales tax in NY only: - 3.7GHz 4-core Mac Pro: $2599, $400 off MSRP - 3.5GHz 6-core Mac Pro: $3499, $... Read more
Save up to $400 on MacBooks with Apple Certif...
The Apple Store has Apple Certified Refurbished 2014 MacBook Pros and MacBook Airs available for up to $400 off the cost of new models. An Apple one-year warranty is included with each model, and... Read more
Save up to $300 on Macs, $30 on iPads with Ap...
Purchase a new Mac or iPad at The Apple Store for Education and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free,... Read more
iOS and Android OS Targeted by Man-in-the-Mid...
Cloud services security provider Akamai Technologies, Inc. has released, through the company’s Prolexic Security Engineering & Research Team (PLXsert), a new cybersecurity threat advisory. The... Read more

Jobs Board

*Apple* Store Leader Program (US) - Apple, I...
…Summary Learn and grow as you explore the art of leadership at the Apple Store. You'll master our retail business inside and out through training, hands-on experience, Read more
Project Manager, *Apple* Financial Services...
**Job Summary** Apple Financial Services (AFS) offers consumers, businesses and educational institutions ways to finance Apple purchases. We work with national and Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail - Multiple Positions (US) - A...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.