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Optimize _.omit for large arrays by leveraging _.difference which has optimizations for large arrays.

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This commit is contained in:
John-David Dalton
2013-11-06 20:45:24 -08:00
parent 7e7b129822
commit 3dd3af4a73
7 changed files with 108 additions and 85 deletions
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48
dist/lodash.compat.js vendored
View File

@@ -566,10 +566,10 @@
(function() {
var length = shadowedProps.length;
while (length--) {
var prop = shadowedProps[length];
var key = shadowedProps[length];
for (var className in nonEnumProps) {
if (hasOwnProperty.call(nonEnumProps, className) && !hasOwnProperty.call(nonEnumProps[className], prop)) {
nonEnumProps[className][prop] = false;
if (hasOwnProperty.call(nonEnumProps, className) && !hasOwnProperty.call(nonEnumProps[className], key)) {
nonEnumProps[className][key] = false;
}
}
}
@@ -679,8 +679,8 @@
props = [];
ctor.prototype = { 'valueOf': 1, 'y': 1 };
for (var prop in new ctor) { props.push(prop); }
for (prop in arguments) { }
for (var key in new ctor) { props.push(key); }
for (key in arguments) { }
/**
* Detect if an `arguments` object's [[Class]] is resolvable (all but Firefox < 4, IE < 9).
@@ -744,7 +744,7 @@
* @memberOf _.support
* @type boolean
*/
support.nonEnumArgs = prop != 0;
support.nonEnumArgs = key != 0;
/**
* Detect if properties shadowing those on `Object.prototype` are non-enumerable.
@@ -2971,23 +2971,29 @@
* // => { 'name': 'fred' }
*/
function omit(object, callback, thisArg) {
var indexOf = getIndexOf(),
isFunc = typeof callback == 'function',
result = {};
var result = {};
if (typeof callback != 'function') {
var props = [];
forIn(object, function(value, key) {
props.push(key);
});
props = difference(props, baseFlatten(arguments, true, false, 1));
if (isFunc) {
callback = lodash.createCallback(callback, thisArg, 3);
} else {
var props = baseFlatten(arguments, true, false, 1);
}
forIn(object, function(value, key, object) {
if (isFunc
? !callback(value, key, object)
: indexOf(props, key) < 0
) {
result[key] = value;
var index = -1,
length = props.length;
while (++index < length) {
var key = props[index];
result[key] = object[key];
}
});
} else {
callback = lodash.createCallback(callback, thisArg, 3);
forIn(object, function(value, key, object) {
if (!callback(value, key, object)) {
result[key] = value;
}
});
}
return result;
}

4
dist/lodash.compat.min.js vendored
View File

@@ -39,8 +39,8 @@ jt(/x/)&&(jt=function(n){return typeof n=="function"&&ve.call(n)==K});var ur=we?
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l[a]=s===n&&(y?y.length:0)>=_&&o(a?r[a]:v)}n:for(;++f<g;){var m=l[0],y=e[f];if(0>(m?t(m,y):s(v,y))){for(a=u,(m||v).push(y);--a;)if(m=l[a],0>(m?t(m,y):s(r[a],y)))continue n;h.push(y)}}for(;u--;)(m=l[u])&&p(m);return c(l),c(v),h},v.invert=wt,v.invoke=function(n,t){var e=s(arguments,2),r=-1,u=typeof t=="function",o=n?n.length:0,a=ne(typeof o=="number"?o:0);return Dt(n,function(n){a[++r]=(u?t:n[t]).apply(n,e)}),a},v.keys=Je,v.map=Bt,v.max=Pt,v.memoize=function(n,t){if(!jt(n))throw new fe;var e=function(){var r=e.cache,u=t?t.apply(this,arguments):b+arguments[0];
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i<o&&(o=i)}}else t=null==t&&kt(n)?r:v.createCallback(t,e,3),Ze(n,function(n,e,r){e=t(n,e,r),e<u&&(u=e,o=n)});return o},v.omit=function(n,t,e){var r={};if(typeof t!="function"){var u=[];er(n,function(n,t){u.push(t)});for(var u=Tt(u,at(arguments,!0,!1,1)),o=-1,a=u.length;++o<a;){var i=u[o];r[i]=n[i]}}else t=v.createCallback(t,e,3),er(n,function(n,e,u){t(n,e,u)||(r[e]=n)});return r},v.once=function(n){var t,e;if(!jt(n))throw new fe;return function(){return t?e:(t=!0,e=n.apply(this,arguments),n=null,e)
}},v.pairs=function(n){for(var t=-1,e=Je(n),r=e.length,u=ne(r);++t<r;){var o=e[t];u[t]=[o,n[o]]}return u},v.partial=function(n){return st(n,16,s(arguments,1))},v.partialRight=function(n){return st(n,32,null,s(arguments,1))},v.pick=function(n,t,e){var r={};if(typeof t!="function")for(var u=-1,o=at(arguments,!0,!1,1),a=xt(n)?o.length:0;++u<a;){var i=o[u];i in n&&(r[i]=n[i])}else t=v.createCallback(t,e,3),er(n,function(n,e,u){t(n,e,u)&&(r[e]=n)});return r},v.pluck=lr,v.pull=function(n){for(var t=arguments,e=0,r=t.length,u=n?n.length:0;++e<r;)for(var o=-1,a=t[e];++o<u;)n[o]===a&&(Oe.call(n,o--,1),u--);
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},v.transform=function(n,t,e,r){var u=We(n);if(null==e)if(u)e=[];else{var o=n&&n.constructor;e=nt(o&&o.prototype)}return t&&(t=v.createCallback(t,r,4),(u?Ze:rr)(n,function(n,r,u){return t(e,n,r,u)})),e},v.union=function(){return ct(at(arguments,!0,!0))},v.uniq=Gt,v.values=Et,v.where=It,v.without=function(n){return Tt(n,s(arguments,1))},v.wrap=function(n,t){return st(t,16,[n])},v.zip=Jt,v.zipObject=Mt,v.collect=Bt,v.drop=Kt,v.each=Dt,v.eachRight=Nt,v.extend=nr,v.methods=_t,v.object=Mt,v.select=It,v.tail=Kt,v.unique=Gt,v.unzip=Jt,Xt(v),v.clone=function(n,t,e,r){return typeof t!="boolean"&&null!=t&&(r=e,e=t,t=!1),Y(n,t,typeof e=="function"&&tt(e,r,1))

36
dist/lodash.js vendored
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@@ -2631,23 +2631,29 @@
* // => { 'name': 'fred' }
*/
function omit(object, callback, thisArg) {
var indexOf = getIndexOf(),
isFunc = typeof callback == 'function',
result = {};
var result = {};
if (typeof callback != 'function') {
var props = [];
forIn(object, function(value, key) {
props.push(key);
});
props = difference(props, baseFlatten(arguments, true, false, 1));
if (isFunc) {
callback = lodash.createCallback(callback, thisArg, 3);
} else {
var props = baseFlatten(arguments, true, false, 1);
}
forIn(object, function(value, key, object) {
if (isFunc
? !callback(value, key, object)
: indexOf(props, key) < 0
) {
result[key] = value;
var index = -1,
length = props.length;
while (++index < length) {
var key = props[index];
result[key] = object[key];
}
});
} else {
callback = lodash.createCallback(callback, thisArg, 3);
forIn(object, function(value, key, object) {
if (!callback(value, key, object)) {
result[key] = value;
}
});
}
return result;
}

12
dist/lodash.min.js vendored
View File

@@ -35,12 +35,12 @@ return t?H(e,t):e},Z.createCallback=function(n,t,e){var r=typeof n;if(null==n||"
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25
dist/lodash.underscore.js vendored
View File

@@ -1594,15 +1594,20 @@
* // => { 'name': 'fred' }
*/
function omit(object) {
var indexOf = getIndexOf(),
props = baseFlatten(arguments, true, false, 1),
var props = [];
forIn(object, function(value, key) {
props.push(key);
});
props = difference(props, baseFlatten(arguments, true, false, 1));
var index = -1,
length = props.length,
result = {};
forIn(object, function(value, key) {
if (indexOf(props, key) < 0) {
result[key] = value;
}
});
while (++index < length) {
var key = props[index];
result[key] = object[key];
}
return result;
}
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result = {};
while (++index < length) {
var prop = props[index];
if (prop in object) {
result[prop] = object[prop];
var key = props[index];
if (key in object) {
result[key] = object[key];
}
}
return result;

20
dist/lodash.underscore.min.js vendored
View File

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48
lodash.js
View File

@@ -566,10 +566,10 @@
(function() {
var length = shadowedProps.length;
while (length--) {
var prop = shadowedProps[length];
var key = shadowedProps[length];
for (var className in nonEnumProps) {
if (hasOwnProperty.call(nonEnumProps, className) && !hasOwnProperty.call(nonEnumProps[className], prop)) {
nonEnumProps[className][prop] = false;
if (hasOwnProperty.call(nonEnumProps, className) && !hasOwnProperty.call(nonEnumProps[className], key)) {
nonEnumProps[className][key] = false;
}
}
}
@@ -679,8 +679,8 @@
props = [];
ctor.prototype = { 'valueOf': 1, 'y': 1 };
for (var prop in new ctor) { props.push(prop); }
for (prop in arguments) { }
for (var key in new ctor) { props.push(key); }
for (key in arguments) { }
/**
* Detect if an `arguments` object's [[Class]] is resolvable (all but Firefox < 4, IE < 9).
@@ -744,7 +744,7 @@
* @memberOf _.support
* @type boolean
*/
support.nonEnumArgs = prop != 0;
support.nonEnumArgs = key != 0;
/**
* Detect if properties shadowing those on `Object.prototype` are non-enumerable.
@@ -2989,23 +2989,29 @@
* // => { 'name': 'fred' }
*/
function omit(object, callback, thisArg) {
var indexOf = getIndexOf(),
isFunc = typeof callback == 'function',
result = {};
var result = {};
if (typeof callback != 'function') {
var props = [];
forIn(object, function(value, key) {
props.push(key);
});
props = difference(props, baseFlatten(arguments, true, false, 1));
if (isFunc) {
callback = lodash.createCallback(callback, thisArg, 3);
} else {
var props = baseFlatten(arguments, true, false, 1);
}
forIn(object, function(value, key, object) {
if (isFunc
? !callback(value, key, object)
: indexOf(props, key) < 0
) {
result[key] = value;
var index = -1,
length = props.length;
while (++index < length) {
var key = props[index];
result[key] = object[key];
}
});
} else {
callback = lodash.createCallback(callback, thisArg, 3);
forIn(object, function(value, key, object) {
if (!callback(value, key, object)) {
result[key] = value;
}
});
}
return result;
}