8398c9048d
code was modified slightly, so the code differs from the original downloadable 1.9.5 version
40 lines
1.3 KiB
JavaScript
Executable file
40 lines
1.3 KiB
JavaScript
Executable file
dojo.provide("dojox.lang.functional.zip");
|
|
|
|
// This module adds high-level functions and related constructs:
|
|
// - zip combiners
|
|
|
|
// Defined methods:
|
|
// - operate on dense arrays
|
|
|
|
(function(){
|
|
var df = dojox.lang.functional;
|
|
|
|
dojo.mixin(df, {
|
|
// combiners
|
|
zip: function(){
|
|
// summary: returns an array of arrays, where the i-th array
|
|
// contains the i-th element from each of the argument arrays.
|
|
// description: This is the venerable zip combiner (for example,
|
|
// see Python documentation for general details). The returned
|
|
// array is truncated to match the length of the shortest input
|
|
// array.
|
|
var n = arguments[0].length, m = arguments.length, i = 1, t = new Array(n), j, p;
|
|
for(; i < m; n = Math.min(n, arguments[i++].length));
|
|
for(i = 0; i < n; ++i){
|
|
p = new Array(m);
|
|
for(j = 0; j < m; p[j] = arguments[j][i], ++j);
|
|
t[i] = p;
|
|
}
|
|
return t; // Array
|
|
},
|
|
unzip: function(/*Array*/ a){
|
|
// summary: similar to dojox.lang.functional.zip(), but takes
|
|
// a single array of arrays as the input.
|
|
// description: This function is similar to dojox.lang.functional.zip()
|
|
// and can be used to unzip objects packed by
|
|
// dojox.lang.functional.zip(). It is here mostly to provide
|
|
// a short-cut for the different method signature.
|
|
return df.zip.apply(null, a); // Array
|
|
}
|
|
});
|
|
})();
|