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Contents
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;
for(i = 1; i < m; n = Math.min(n, arguments[i++].length));
var t = new Array(n), j;
for(i = 0; i < n; ++i){
var 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
}
});
})();
Version data entries
5 entries across 5 versions & 1 rubygems