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author | mensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f> | 2008-11-13 09:49:11 +0000 |
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committer | mensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f> | 2008-11-13 09:49:11 +0000 |
commit | e44a7e37b6c7b5961adaffc62b9042b8d442938e (patch) | |
tree | 95b67c356e93163467db2451f2b8cce84ed5d582 /includes/js/dojox/lang/functional/scan.js | |
parent | a62b9742ee5e28bcec6872d88f50f25b820914f6 (diff) | |
download | semanticscuttle-e44a7e37b6c7b5961adaffc62b9042b8d442938e.tar.gz semanticscuttle-e44a7e37b6c7b5961adaffc62b9042b8d442938e.tar.bz2 |
New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
Diffstat (limited to 'includes/js/dojox/lang/functional/scan.js')
-rw-r--r-- | includes/js/dojox/lang/functional/scan.js | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/includes/js/dojox/lang/functional/scan.js b/includes/js/dojox/lang/functional/scan.js new file mode 100644 index 0000000..65a3ef2 --- /dev/null +++ b/includes/js/dojox/lang/functional/scan.js @@ -0,0 +1,84 @@ +if(!dojo._hasResource["dojox.lang.functional.scan"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. +dojo._hasResource["dojox.lang.functional.scan"] = true; +dojo.provide("dojox.lang.functional.scan"); + +dojo.require("dojox.lang.functional.lambda"); + +// This module adds high-level functions and related constructs: +// - "scan" family of functions + +// Notes: +// - missing high-level functions are provided with the compatible API: +// scanl, scanl1, scanr, scanr1 + +// Defined methods: +// - take any valid lambda argument as the functional argument +// - operate on dense arrays +// - take a string as the array argument +// - take an iterator objects as the array argument (only scanl, and scanl1) + +(function(){ + var d = dojo, df = dojox.lang.functional; + + d.mixin(df, { + // classic reduce-class functions + scanl: function(/*Array|String|Object*/ a, /*Function|String|Array*/ f, /*Object*/ z, /*Object?*/ o){ + // summary: repeatedly applies a binary function to an array from left + // to right using a seed value as a starting point; returns an array + // of values produced by foldl() at that point. + if(typeof a == "string"){ a = a.split(""); } + o = o || d.global; f = df.lambda(f); + var t, n; + if(d.isArray(a)){ + t = new Array((n = a.length) + 1); + t[0] = z; + for(var i = 0; i < n; z = f.call(o, z, a[i], i, a), t[++i] = z); + }else{ + t = [z]; + for(var i = 0; a.hasNext(); t.push(z = f.call(o, z, a.next(), i++))); + } + return t; // Array + }, + scanl1: function(/*Array|String|Object*/ a, /*Function|String|Array*/ f, /*Object?*/ o){ + // summary: repeatedly applies a binary function to an array from left + // to right; returns an array of values produced by foldl1() at that + // point. + if(typeof a == "string"){ a = a.split(""); } + o = o || d.global; f = df.lambda(f); + var t, n, z; + if(d.isArray(a)){ + t = new Array(n = a.length); + t[0] = z = a[0]; + for(var i = 1; i < n; t[i] = z = f.call(o, z, a[i], i, a), ++i); + }else if(a.hasNext()){ + t = [z = a.next()]; + for(var i = 1; a.hasNext(); t.push(z = f.call(o, z, a.next(), i++))); + } + return t; // Array + }, + scanr: function(/*Array|String*/ a, /*Function|String|Array*/ f, /*Object*/ z, /*Object?*/ o){ + // summary: repeatedly applies a binary function to an array from right + // to left using a seed value as a starting point; returns an array + // of values produced by foldr() at that point. + if(typeof a == "string"){ a = a.split(""); } + o = o || d.global; f = df.lambda(f); + var n = a.length, t = new Array(n + 1); + t[n] = z; + for(var i = n; i > 0; --i, z = f.call(o, z, a[i], i, a), t[i] = z); + return t; // Array + }, + scanr1: function(/*Array|String*/ a, /*Function|String|Array*/ f, /*Object?*/ o){ + // summary: repeatedly applies a binary function to an array from right + // to left; returns an array of values produced by foldr1() at that + // point. + if(typeof a == "string"){ a = a.split(""); } + o = o || d.global; f = df.lambda(f); + var n = a.length, t = new Array(n), z = a[n - 1]; + t[n - 1] = z; + for(var i = n - 1; i > 0; --i, z = f.call(o, z, a[i], i, a), t[i] = z); + return t; // Array + } + }); +})(); + +} |