was.js – Diff between revs 41 and 47

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1 /*************************************************************************/ 1 /*************************************************************************/
2 /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ 2 /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */
3 /*************************************************************************/ 3 /*************************************************************************/
4 /* fuss/lambda_calculus/functional_programming/aggregators @ grimore.org */ 4 /* fuss/lambda_calculus/functional_programming/aggregators @ grimore.org */
5 /*************************************************************************/ 5 /*************************************************************************/
6 function wasSwitch() { 6 function wasSwitch(q, d, ...c) {
7 if(arguments.length % 2 !== 0) { 7 if(c.length % 2 !== 0) {
8 throw "Pairs of predicates expected for cases"; 8 throw "Pairs of predicates expected for cases";
9 } 9 }
10 10
11 (Array.isArray(arguments[0]) ? arguments[0] : [ arguments[0] ]).forEach(function(s) { 11 (Array.isArray(q) ? q : [ q ]).forEach((s) => {
12 var m = false; 12 var m = false;
13 for(var i = 2; i < arguments.length; i += 2) { 13 for(var i = 0; i < c.length; i += 2) {
14 if(!arguments[i](s)) { 14 if(!c[i](s)) {
15 continue; 15 continue;
16 } 16 }
17 if(!arguments[i + 1](s)) { 17 if(!c[i + 1](s)) {
18 continue; 18 continue;
19 } 19 }
20 m = true; 20 m = true;
21 } 21 }
22 22
23 if(!m) { 23 if(!m) {
24 arguments[1](s); 24 d(s);
25 } 25 }
26 }); 26 });
27 } 27 }
28 if (!Array.prototype.switch) { 28 if (!Array.prototype.switch) {
29 Array.prototype.switch = function() { 29 Array.prototype.switch = function() {