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| //some shared stuff first: | |
| var arr = [0,1,2,3,5,4,5,7]; | |
| const s = () => console.log("success"); | |
| const f = () => console.log("failure"); | |
| //v1 imperative style | |
| function exeImperative(){ | |
| let dec = 0; | |
| for(var i = 0; i < arr.length -1; i++){ | |
| if(arr[i+1] < arr[i]){ | |
| if(++dec > 1){break ;} | |
| } | |
| } | |
| if(i === arr.length -1){ | |
| s(); | |
| }else{ | |
| f(); | |
| } | |
| } | |
| exeImperative(); | |
| //v2 transformed to functional style: recursion, no (re)assignments | |
| const foo = function(i, dec){ | |
| if(dec > 1){return "fail"} | |
| if(i === arr.length){return "succeed"} | |
| if(arr[i+1]<arr[i]){return foo(i+1, dec+1)} | |
| else{return foo(i+1, dec)} | |
| }; | |
| console.log(foo(0,0)); | |
| //v3 transformed to single statement : ) | |
| const bar = (i, dec) => | |
| (dec > 1) ? "fail" : | |
| (i === arr.length) ? "succeed" : | |
| bar(i+1, (arr[i+1] < arr[i]) ? dec+1 : dec); | |
| console.log(bar(0,0)); |
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