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In some cases it is required to change application behaviour depending on iPhone or iPod Touch device version.

#import <sys/utsname.h>;
...
struct utsname u;
uname(&u);

After calling uname() function, u.machine will be “iPod1,1″, “iPod2,1″ for iPod Touch and “iPhone1,1″, “iPhone1,2″, “iPhone2,1″ for iPhone (or similar depending on current device).

Source:

• Mac OS X Manual Page For uname(3)
• Detect the specific iPhone/iPod touch model – Stack Overflow
• Get the type of the iPhone programmatically? – iPhone Dev SDK Forum

Here is the code snippet for generating random permutation of array:

var a:Array = new Array( 1, 2, 3, 4, 5, 6, 7, 8, 9 );

trace( "Array: " + a );

for ( var i:uint = 0; i < a.length; ++i )
{
    var j:int = Math.random()*i;
    var j:int = Math.random()*( i + 1 );

    // Swap a[i] and a[j]
    var temp:* = a[j];
    a[j] = a[i];
    a[i] = temp;
}

trace( "Permutation: " + a );

Update: fixed bug with finding index of item to swap – thanks for pointing that out Kevin!

Today I’ve tried to add simple Sprite instance to Flex Canvas using addChild() method, but it doesn’t work. Solution is very simple – use rawChildren.addChild().

⇥ Continued