3 ms·
Here's an implementation that I think is shorter, simpler to understand, easier to use, and doesn't require modifying existing functions for currification fu
by jganetsk 17y ago
Here's an implementation that I think is shorter, simpler to understand, easier to use, and doesn't require modifying existing functions for currification
function curry(fn) {
var wrappedFnMaker = function(accArgs) {
return function() {
var effectiveArgs = accArgs.concat(Array.prototype.slice.call(arguments));
if (effectiveArgs.length >= fn.length) {
return fn.apply(this, effectiveArgs);
} else {
return wrappedFnMaker(effectiveArgs);
}
};
}
return wrappedFnMaker([]);
}
add = curry(function(a,b,c) { return a + b + c; });
- marcmarc 17y agoHere's my take: function curry(fn, args) { if (typeof args == "undefined" || args.length < fn.length) return function() { if (typeof args == "undefined") args = []; return curry(fn, args.concat(Array.prototype.slice.call(arguments))); }; return fn.apply(this, args); } var add = curry(function(a, b, c) { return a + b + c;});
- jganetsk 17y agoBoth of our implementations have broken this. Damn you, Javascript this. In principle, these two lines of code should always produce the same result: foo.bar(1,2) and foo.bar(1)(2) And they won't necessarily in our case, if the function uses this.
- deleted 17y ago[deleted]
- shaunxcode 17y agoHere is curry in php 5.3 function curry(){ $args = func_get_args(); $fn = array_shift($args); return function() use(&$fn, &$args) { $nargs = func_get_args(); foreach($nargs as $narg) $args[] = $narg; return call_user_func_array($fn, $args); }; } $add20 = curry(function($a, $b){return $a + $b;}, 20); echo $add20(5); #25