Add information about Cycript's for each syntax.

[cycript.git] / website / index.html

diff --git a/website/index.html b/website/index.html
index 55ca65bf1920b0f4cfb4934a5b6c403bdc02e57f..b87b6e1a2dd4d11821bde73d3f0c0c36badfc812 100644 (file)
--- a/website/index.html
+++ b/website/index.html
@@ -42,6 +42,18 @@ cy# var a = ((0 + (1)) * (2 * 3)) + m['a']('\'')
 var a=(0+1)*(2*3)+m.a("'");
 ...</xmp>
 
+<p>Because Cycript is implemented as a Cycript->JavaScript compiler, it is able to add functionality that may be lacking in the underlying JavaScript implementation. Right now, Cycript supports array comprehensions and for each loops.</p>
+
+<xmp>cy# function range(b, e) { var q = []; for (var i = b; i != e; ++i) q.push(i); return q; }
+cy# ?debug
+debug == true
+cy# e = []; for each (var i in range(1, 4)) e.push(i); e
+e=[];with({$cys:0,$cyt:0}){$cys=range(1,4);for($cyt in $cys){i=$cys[$cyt];e.push(i);}}e;
+[1,2,3]
+cy# evens = [i for each (i in range(0, 21)) if (i % 2 == 0)]
+evens=(function($cyv,i){$cyv=[];(function($cys){$cys=range(0,21);for(i in $cys){i=$cys[i];if(i%2==0)$cyv.push(i);}}());return $cyv;}());
+[0,2,4,6,8,10,12,14,16,18,20]</xmp>
+
 <p>In addition to standard JavaScript, you an also access anything in the Objective-C runtime. Attempts have been made, sparingly, to bridge syntax when possible between the two environments. In particular, you may notice interesting properties of arrays, dictonaries, strings, and numbers. Care has been taken to minimize the damage to the object model.</p>
 
 <xmp>cy# var a = [NSMutableArray arrayWithCapacity:4]