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December 20, 2015 15:08
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more abstractions...
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function map(func, array) { | |
var len = array.length; | |
var rst = new Array(len); | |
for (var i = 0; i < len; i++) | |
rst[i] = func(array[i]); | |
return rst; | |
} | |
function reduce(func, start, array) { | |
var len = array.length; | |
for (var i = 0; i < len; i++) | |
start = func(start, array[i]); | |
return start; | |
} | |
function pluck(tst, array) { | |
var rslt = [], | |
len = array.length; | |
for (var i = 0; i < len; ++i) { | |
var crnt = array[i]; | |
if (tst(crnt)) | |
rslt.push(crnt); | |
} | |
return rslt; | |
} | |
function anyAll(t, array) { | |
for (var i = 0; i < array.length; ++i) { | |
var fnd = t(array[i]); | |
if (fnd) | |
return fnd; | |
} | |
return false; | |
} | |
function stickem(func, obj) { | |
return function() { | |
return func.apply(obj, args); | |
}; | |
} | |
function method(obj, nm) { | |
return function() { | |
obj[nm].apply(obj, args); | |
}; | |
} | |
function compose(fnc1, fnc2) { | |
return function() { | |
return fnc1(fnc2.apply(null, args)); | |
}; | |
} |
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