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Avoid setting arity/processing args if func is not passed to methods like _.bind.

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John-David Dalton
2014-02-04 23:02:32 -08:00
parent e949eb8623
commit 8498f12a9d
1 changed files with 15 additions and 9 deletions
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24
lodash.js
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@@ -4598,10 +4598,12 @@
if (arguments.length < 3) {
return createWrapper(func, BIND_FLAG, null, thisArg);
}
var arity = func && (func[expando] ? func[expando][2] : func.length),
partialArgs = slice(arguments, 2);
if (func) {
var arity = func[expando] ? func[expando][2] : func.length,
partialArgs = slice(arguments, 2);
arity -= partialArgs.length;
arity -= partialArgs.length;
}
return createWrapper(func, BIND_FLAG | PARTIAL_FLAG, arity, thisArg, partialArgs);
}
@@ -5071,10 +5073,12 @@
* // => 'hi fred'
*/
function partial(func) {
var arity = func && (func[expando] ? func[expando][2] : func.length),
partialArgs = slice(arguments, 1);
if (func) {
var arity = func[expando] ? func[expando][2] : func.length,
partialArgs = slice(arguments, 1);
arity -= partialArgs.length;
arity -= partialArgs.length;
}
return createWrapper(func, PARTIAL_FLAG, arity, null, partialArgs);
}
@@ -5109,10 +5113,12 @@
* // => { '_': _, 'jq': $ }
*/
function partialRight(func) {
var arity = func && (func[expando] ? func[expando][2] : func.length),
partialRightArgs = slice(arguments, 1);
if (func) {
var arity = func[expando] ? func[expando][2] : func.length,
partialRightArgs = slice(arguments, 1);
arity -= partialRightArgs.length;
arity -= partialRightArgs.length;
}
return createWrapper(func, PARTIAL_RIGHT_FLAG, arity, null, null, partialRightArgs);
}