Mirrors/lodash
1
0
Fork 0
mirror of https://github.com/whoisclebs/lodash.git synced 2026-01-31 15:27:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add _.get and _.set.

Browse Source
This commit is contained in:
jdalton
2015-03-29 20:59:48 -07:00
parent 18313f2e90
commit 2edcc89303
2 changed files with 128 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

163
lodash.src.js
View File

@@ -2254,6 +2254,26 @@
return result;
}
/**
* The base implementation of `get` without support for string paths
* and default values.
*
* @private
* @param {Object} object The object to query.
* @param {Array} path The path of the property to get.
* @returns {*} Returns the resolved value.
*/
function baseGet(object, path) {
var result,
index = -1,
length = path.length;
while (object != null && ++index < length) {
result = object = object[path[index]];
}
return result;
}
/**
* The base implementation of `_.isEqual` without support for `this` binding
* `customizer` functions.
@@ -2493,7 +2513,7 @@
var key = pathKey;
object = toObject(object);
if (!(key in object)) {
object = getPath(object, baseSlice(path, 0, -1));
object = baseGet(object, baseSlice(path, 0, -1));
if (object == null) {
return false;
}
@@ -2619,7 +2639,7 @@
* A specialized version of `baseProperty` which supports deep paths.
*
* @private
* @param {string} path The path of the property to get.
* @param {Array|string} path The path of the property to get.
* @returns {Function} Returns the new function.
*/
function basePropertyDeep(path) {
@@ -2631,7 +2651,7 @@
}
return pathKey in toObject(object)
? object[pathKey]
: getPath(object, path);
: baseGet(object, path);
};
}
@@ -4083,16 +4103,6 @@
return collection ? result(collection, target, fromIndex) : result;
}
function getPath(object, path) {
var index = -1,
length = path.length;
while (object != null && ++index < length) {
object = object[path[index]];
}
return object;
}
/**
* Gets the view, applying any `transforms` to the `start` and `end` positions.
*
@@ -4560,8 +4570,8 @@
return value;
}
var result = [];
(value + '').replace(rePropName, function(match, key, number, quote, string) {
result.push(key || number || string);
(value + '').replace(rePropName, function(match, number, quote, string) {
result.push(typeof string == 'string' ? string : (number || match));
});
return result;
}
@@ -6861,13 +6871,13 @@
}, function() { return [[], []]; });
/**
* Gets the value of `path` from all elements in `collection`.
* Gets the property value of `path` from all elements in `collection`.
*
* @static
* @memberOf _
* @category Collection
* @param {Array|Object|string} collection The collection to iterate over.
* @param {string} path The path of the property to pluck.
* @param {Array|string} path The path of the property to pluck.
* @returns {Array} Returns the property values.
* @example
*
@@ -9440,6 +9450,40 @@
return baseFunctions(object, keysIn(object));
}
/**
* Gets the property value of `path` on `object`. If the resolved value is
* `undefined` the `defaultValue` is used in its place.
*
* @static
* @memberOf _
* @category Object
* @param {Object} object The object to query.
* @param {Array|string} path The path of the property to get.
* @param {*} [defaultValue] The value returned if the resolved value is `undefined`.
* @returns {*} Returns the resolved value.
* @example
*
* var object = { 'a': [{ 'b': { 'c': 3 } }] };
*
* _.get(object, 'a[0].b.c');
* // => 3
*
* _.get(object, ['a', '0', 'b', 'c']);
* // => 3
*
* _.get(object, 'a.b.c', 'default');
* // => 'default'
*/
function get(object, path, defaultValue) {
var result;
if (object != null) {
result = (isKey(path) || (path in toObject(object)))
? object[path]
: baseGet(object, toPath(path));
}
return typeof result == 'undefined' ? defaultValue : result;
}
/**
* Checks if `path` is a direct property.
*
@@ -9447,7 +9491,7 @@
* @memberOf _
* @category Object
* @param {Object} object The object to inspect.
* @param {string} path The path to check.
* @param {Array|string} path The path to check.
* @returns {boolean} Returns `true` if `path` is a direct property, else `false`.
* @example
*
@@ -9460,7 +9504,7 @@
var result = object != null && hasOwnProperty.call(object, path);
if (!result && !isKey(path)) {
path = toPath(path);
object = getPath(object, baseSlice(path, 0, -1));
object = baseGet(object, baseSlice(path, 0, -1));
result = object != null && hasOwnProperty.call(object, last(path));
}
return result;
@@ -9841,18 +9885,16 @@
});
/**
* Resolves the value of property `path` on `object`. If the value of `path`
* is a function it is invoked with the `this` binding of `object` and its
* result is returned, else the property value is returned. If the property
* value is `undefined` the `defaultValue` is used in its place.
* This method is like `_.get` except that if the resolved value is a function
* it is invoked with the `this` binding of its parent object and its result
* is returned.
*
* @static
* @memberOf _
* @category Object
* @param {Object} object The object to query.
* @param {string} path The path of the property to resolve.
* @param {*} [defaultValue] The value returned if the property value
* resolves to `undefined`.
* @param {Array|string} path The path of the property to resolve.
* @param {*} [defaultValue] The value returned if the resolved value is `undefined`.
* @returns {*} Returns the resolved value.
* @example
*
@@ -9871,16 +9913,62 @@
* // => 'busy'
*/
function result(object, path, defaultValue) {
if (object != null && !isKey(path) && !(path in toObject(object))) {
if (object != null && !(isKey(path) || (path in toObject(object)))) {
path = toPath(path);
object = getPath(object, baseSlice(path, 0, -1));
object = baseGet(object, baseSlice(path, 0, -1));
path = last(path);
}
var value = object == null ? undefined : object[path];
if (typeof value == 'undefined') {
value = defaultValue;
var result = object == null ? undefined : object[path];
if (typeof result == 'undefined') {
result = defaultValue;
}
return isFunction(value) ? value.call(object) : value;
return isFunction(result) ? result.call(object) : result;
}
/**
* Sets the property value of `path` on `object`. If a portion of `path`
* does not exist it is created.
*
* @static
* @memberOf _
* @category Object
* @param {Object} object The object to augment.
* @param {Array|string} path The path of the property to set.
* @param {*} value The value to set.
* @returns {Object} Returns `object`.
* @example
*
* var object = { 'a': { 'b': { 'c': 3 } } };
*
* _.set(object, 'a.b.c', 4);
* console.log(object.a.b.c);
* // => 4
*
* _.set(object, 'x[0].y.z', 5);
* console.log(object.x[0].y.z);
* // => 5
*/
function set(object, path, value) {
if (object == null) {
return object;
}
path = toPath(path);
var index = -1,
length = path.length,
endIndex = length - 1,
nested = object;
while (++index < length) {
var key = path[index];
if (index == endIndex) {
nested[key] = value;
} else if (nested[key] == null) {
nested[key] = isIndex(path[index + 1]) ? [] : {};
}
nested = nested[key];
}
return object;
}
/**
@@ -11120,7 +11208,7 @@
* @static
* @memberOf _
* @category Utility
* @param {string} path The path of the property to get.
* @param {Array|string} path The path of the property to get.
* @param {*} value The value to compare.
* @returns {Function} Returns the new function.
* @example
@@ -11265,12 +11353,13 @@
}
/**
* Creates a function which returns the property value of `path` on a given object.
* Creates a function which returns the property value of `path` on a
* given object.
*
* @static
* @memberOf _
* @category Utility
* @param {string} path The path of the property to get.
* @param {Array|string} path The path of the property to get.
* @returns {Function} Returns the new function.
* @example
*
@@ -11317,7 +11406,7 @@
return function(path) {
return (isKey(path) || (path in toObject(object)))
? object[path]
: getPath(object, toPath(path));
: baseGet(object, toPath(path));
};
}
@@ -11713,6 +11802,7 @@
lodash.remove = remove;
lodash.rest = rest;
lodash.restParam = restParam;
lodash.set = set;
lodash.shuffle = shuffle;
lodash.slice = slice;
lodash.sortBy = sortBy;
@@ -11781,6 +11871,7 @@
lodash.findLastKey = findLastKey;
lodash.findWhere = findWhere;
lodash.first = first;
lodash.get = get;
lodash.has = has;
lodash.identity = identity;
lodash.includes = includes;

2
test/test.js
View File

@@ -16543,7 +16543,7 @@
var acceptFalsey = _.difference(allMethods, rejectFalsey);
test('should accept falsey arguments', 213, function() {
test('should accept falsey arguments', 215, function() {
var emptyArrays = _.map(falsey, _.constant([])),
isExposed = '_' in root,
oldDash = root._;