- Author:
- David Nickerson <david.nickerson@gmail.com>
- Date:
- 2021-09-17 15:39:51+12:00
- Desc:
- tweak html formatting
- Permanent Source URI:
- https://models.fieldml.org/workspace/a1/rawfile/c47db6b2fedb368422c7f4d5191aeb9f319ad684/dojo-presentation/js/dojo/dojox/lang/functional/sequence.js
dojo.provide("dojox.lang.functional.sequence");
dojo.require("dojox.lang.functional.lambda");
// This module adds high-level functions and related constructs:
// - sequence generators
// If you want more general sequence builders check out listcomp.js and
// unfold() (in fold.js).
// Defined methods:
// - take any valid lambda argument as the functional argument
(function(){
var d = dojo, df = dojox.lang.functional;
d.mixin(df, {
// sequence generators
repeat: function(/*Number*/ n, /*Function|String|Array*/ f, /*Object*/ z, /*Object?*/ o){
// summary: builds an array by repeatedly applying a unary function N times
// with a seed value Z. N should be greater than 0.
o = o || d.global; f = df.lambda(f);
var t = new Array(n);
t[0] = z;
for(var i = 1; i < n; t[i] = z = f.call(o, z), ++i);
return t; // Array
},
until: function(/*Function|String|Array*/ pr, /*Function|String|Array*/ f, /*Object*/ z, /*Object?*/ o){
// summary: builds an array by repeatedly applying a unary function with
// a seed value Z until the predicate is satisfied.
o = o || d.global; f = df.lambda(f); pr = df.lambda(pr);
var t = [];
for(; !pr.call(o, z); t.push(z), z = f.call(o, z));
return t; // Array
}
});
})();
