Change _.defaults to not overwrite null values.

Former-commit-id: 4a85aefc3eaf2180fb0e8cd0f6efb1524a9d7caa
This commit is contained in:
John-David Dalton
2013-02-13 01:51:15 -08:00
parent a3464780a1
commit f2b350eb62
8 changed files with 230 additions and 235 deletions

39
dist/lodash.compat.js vendored
View File

@@ -438,23 +438,16 @@
};
/** Reusable iterator options for `assign` and `defaults` */
var assignIteratorOptions = {
var defaultsIteratorOptions = {
'args': 'object, source, guard',
'top':
'var args = arguments,\n' +
' argsIndex = 0,\n' +
" argsLength = typeof guard == 'number' ? 2 : arguments.length;\n" +
'if (argsLength > 2) {\n' +
" if (typeof args[argsLength - 2] == 'function') {\n" +
' var callback = createCallback(args[--argsLength - 1], args[argsLength--], 2);\n' +
" } else if (typeof args[argsLength - 1] == 'function') {\n" +
' callback = args[--argsLength];\n' +
' }\n' +
'}\n' +
" argsLength = typeof guard == 'number' ? 2 : args.length;\n" +
'while (++argsIndex < argsLength) {\n' +
' iterable = arguments[argsIndex];\n' +
' iterable = args[argsIndex];\n' +
' if (iterable && objectTypes[typeof iterable]) {',
'loop': 'result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]',
'loop': "if (typeof result[index] == 'undefined') result[index] = iterable[index]",
'bottom': ' }\n}'
};
@@ -1056,7 +1049,20 @@
* defaults(food, { 'name': 'banana', 'type': 'fruit' });
* // => { 'name': 'apple', 'type': 'fruit' }
*/
var assign = createIterator(assignIteratorOptions);
var assign = createIterator(defaultsIteratorOptions, {
'top':
defaultsIteratorOptions.top.replace(';',
';\n' +
'if (argsLength > 2) {\n' +
" if (typeof args[argsLength - 2] == 'function') {\n" +
' var callback = createCallback(args[--argsLength - 1], args[argsLength--], 2);\n' +
" } else if (typeof args[argsLength - 1] == 'function') {\n" +
' callback = args[--argsLength];\n' +
' }\n' +
'}'
),
'loop': 'result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]'
});
/**
* Creates a clone of `value`. If `deep` is `true`, nested objects will also
@@ -1231,9 +1237,8 @@
/**
* Assigns own enumerable properties of source object(s) to the destination
* object for all destination properties that resolve to `null`/`undefined`.
* Once a property is set, additional defaults of the same property will be
* ignored.
* object for all destination properties that resolve to `undefined`. Once a
* property is set, additional defaults of the same property will be ignored.
*
* @static
* @memberOf _
@@ -1250,9 +1255,7 @@
* _.defaults(food, { 'name': 'banana', 'type': 'fruit' });
* // => { 'name': 'apple', 'type': 'fruit' }
*/
var defaults = createIterator(assignIteratorOptions, {
'loop': 'if (result[index] == null) ' + assignIteratorOptions.loop
});
var defaults = createIterator(defaultsIteratorOptions);
/**
* Creates a sorted array of all enumerable properties, own and inherited,

View File

@@ -7,35 +7,35 @@
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39
dist/lodash.js vendored
View File

@@ -320,23 +320,16 @@
};
/** Reusable iterator options for `assign` and `defaults` */
var assignIteratorOptions = {
var defaultsIteratorOptions = {
'args': 'object, source, guard',
'top':
'var args = arguments,\n' +
' argsIndex = 0,\n' +
" argsLength = typeof guard == 'number' ? 2 : arguments.length;\n" +
'if (argsLength > 2) {\n' +
" if (typeof args[argsLength - 2] == 'function') {\n" +
' var callback = createCallback(args[--argsLength - 1], args[argsLength--], 2);\n' +
" } else if (typeof args[argsLength - 1] == 'function') {\n" +
' callback = args[--argsLength];\n' +
' }\n' +
'}\n' +
" argsLength = typeof guard == 'number' ? 2 : args.length;\n" +
'while (++argsIndex < argsLength) {\n' +
' iterable = arguments[argsIndex];\n' +
' iterable = args[argsIndex];\n' +
' if (iterable && objectTypes[typeof iterable]) {',
'loop': 'result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]',
'loop': "if (typeof result[index] == 'undefined') result[index] = iterable[index]",
'bottom': ' }\n}'
};
@@ -913,7 +906,20 @@
* defaults(food, { 'name': 'banana', 'type': 'fruit' });
* // => { 'name': 'apple', 'type': 'fruit' }
*/
var assign = createIterator(assignIteratorOptions);
var assign = createIterator(defaultsIteratorOptions, {
'top':
defaultsIteratorOptions.top.replace(';',
';\n' +
'if (argsLength > 2) {\n' +
" if (typeof args[argsLength - 2] == 'function') {\n" +
' var callback = createCallback(args[--argsLength - 1], args[argsLength--], 2);\n' +
" } else if (typeof args[argsLength - 1] == 'function') {\n" +
' callback = args[--argsLength];\n' +
' }\n' +
'}'
),
'loop': 'result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]'
});
/**
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/**
* Assigns own enumerable properties of source object(s) to the destination
* object for all destination properties that resolve to `null`/`undefined`.
* Once a property is set, additional defaults of the same property will be
* ignored.
* object for all destination properties that resolve to `undefined`. Once a
* property is set, additional defaults of the same property will be ignored.
*
* @static
* @memberOf _
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* _.defaults(food, { 'name': 'banana', 'type': 'fruit' });
* // => { 'name': 'apple', 'type': 'fruit' }
*/
var defaults = createIterator(assignIteratorOptions, {
'loop': 'if (result[index] == null) ' + assignIteratorOptions.loop
});
var defaults = createIterator(defaultsIteratorOptions);
/**
* Creates a sorted array of all enumerable properties, own and inherited,

35
dist/lodash.min.js vendored
View File

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View File

@@ -238,43 +238,6 @@
/*--------------------------------------------------------------------------*/
/** Reusable iterator options for `assign` and `defaults` */
var assignIteratorOptions = {
'args': 'object, source, guard',
'top':
'var args = arguments,\n' +
' argsIndex = 0,\n' +
" argsLength = typeof guard == 'number' ? 2 : arguments.length;\n" +
'if (argsLength > 2) {\n' +
" if (typeof args[argsLength - 2] == 'function') {\n" +
' var callback = createCallback(args[--argsLength - 1], args[argsLength--], 2);\n' +
" } else if (typeof args[argsLength - 1] == 'function') {\n" +
' callback = args[--argsLength];\n' +
' }\n' +
'}\n' +
'while (++argsIndex < argsLength) {\n' +
' iterable = arguments[argsIndex];\n' +
' if (iterable && objectTypes[typeof iterable]) {',
'loop': 'result[index] = callback ? callback(result[index], iterable[index]) : iterable[index]',
'bottom': ' }\n}'
};
/** Reusable iterator options shared by `each`, `forIn`, and `forOwn` */
var eachIteratorOptions = {
'args': 'collection, callback, thisArg',
'top': "callback = callback && typeof thisArg == 'undefined' ? callback : createCallback(callback, thisArg)",
'arrays': "typeof length == 'number'",
'loop': 'if (callback(iterable[index], index, collection) === false) return result'
};
/** Reusable iterator options for `forIn` and `forOwn` */
var forOwnIteratorOptions = {
'top': 'if (!objectTypes[typeof iterable]) return result;\n' + eachIteratorOptions.top,
'arrays': false
};
/*--------------------------------------------------------------------------*/
/**
* Used by `_.max` and `_.min` as the default `callback` when a given
* `collection` is a string value.
@@ -854,9 +817,8 @@
/**
* Assigns own enumerable properties of source object(s) to the destination
* object for all destination properties that resolve to `null`/`undefined`.
* Once a property is set, additional defaults of the same property will be
* ignored.
* object for all destination properties that resolve to `undefined`. Once a
* property is set, additional defaults of the same property will be ignored.
*
* @static
* @memberOf _