lodash.md

模板版本：v0.1.3

lodash

[!tip] Github 地址

安装与使用

npm

npm install lodash@4.17.21

yarn

yarn add lodash@^4.17.21

直接使用：

// findLastIndex 为例
import lodashStable from "lodash";

var users = [
  { user: "barney", active: true },
  { user: "fred", active: false },
  { user: "pebbles", active: false },
];

lodashStable.findLastIndex(users, function (o) {
  return o.user == "pebbles";
});
// => 2

// The `_.matches` iteratee shorthand.
lodashStable.findLastIndex(users, { user: "barney", active: true });
// => 0

// The `_.matchesProperty` iteratee shorthand.
lodashStable.findLastIndex(users, ["active", false]);
// => 2

// The `_.property` iteratee shorthand.
lodashStable.findLastIndex(users, "active");
// => 0

兼容性

在下述版本验证通过:

1. RNOH：0.72.11; SDK：OpenHarmony(api11) 4.1.0.53; IDE：DevEco Studio 4.1.3.412; ROM：2.0.0.52;
2. RNOH：0.72.13; SDK：HarmonyOS NEXT Developer Preview1; IDE：DevEco Studio 4.1.3.500; ROM：2.0.0.58;

静态方法

详情查看lodash 官方文档

如下是已验证接口展示:

Collection

Name	Description	Type	Required	HarmonyOS Support
find	Iterates over elements of collection, returning the first element predicate returns truthy for	function	NO	yes
findLast	Iterates over elements of collection from right to left, returning the first element	function	NO	yes
size	Gets the size of collection	function	NO	yes
map	Creates an array of values by running each element in collection thru iteratee	function	NO	yes
includes	Checks if value is in collection. If collection is a string, it's checked for a substring of value, otherwise SameValueZero is used for equality comparisons	function	NO	yes
filter	Iterates over elements of collection, returning an array of all elements predicate returns truthy for	function	NO	yes
uniq	Creates a duplicate-free version of an array, using SameValueZero for equality comparisons, in which only the first occurrence of each element is kept	function	NO	yes
uniqBy	This method is like _.uniq except that it accepts iteratee which is invoked for each element in array to generate the criterion by which uniqueness is computed	function	NO	yes
chunk	Creates an array of elements split into groups the length of size. If array can't be split evenly, the final chunk will be the remaining elements	function	NO	yes
slice	Creates a slice of array from start up to, but not including, end	function	NO	yes
compact	Creates an array with all falsey values removed. The values false, null, 0, "", undefined, and NaN are falsey	function	NO	yes

Array

Name	Description	Type	Required	HarmonyOS Support
findIndex	This method is like _.find except that it returns the index of the first element predicate returns truthy for instead of the element itself	function	NO	yes
findLastIndex	This method is like _.findIndex except that it iterates over elements of collection from right to left	function	NO	yes
head	Gets the first element of array	function	NO	yes
flattenDeep	Recursively flattens array	function	NO	yes
remove	emoves all elements from array that predicate returns truthy for and returns an array of the removed elements	function	NO	yes
nth	Gets the element at index n of array. If n is negative, the nth element from the end is returned	function	NO	yes
jion	Converts all elements in array into a string separated by separator	function	NO	yes

String

Name	Description	Type	Required	HarmonyOS Support
camelCase	Converts string to camel case	function	NO	yes
repeat	Repeats the given string n times	function	NO	yes
truncate	Truncates string if it's longer than the given maximum string length	function	NO	yes
toUpper	Converts string, as a whole, to upper case just like String#toUpperCase.	function	NO	yes

Math

Name	Description	Type	Required	HarmonyOS Support
ceil	Computes number rounded up to precision	function	NO	yes
divide	Divide two numbers.	function	NO	yes
round	Computes number rounded to precision.	function	NO	yes
floor	Computes number rounded down to precision	function	NO	yes
sum	Computes the sum of the values in array	function	NO	yes

Object

Name	Description	Type	Required	HarmonyOS Support
findKey	This method is like _.find, returns the key of the first element	function	NO	yes
findLastKey	This method is like _.findKey it iterates over elements of a collection in the opposite order	function	NO	yes
get	Gets the value at path of object. If the resolved value is undefined, the defaultValue is returned in its place	function	NO	yes
values	Creates an array of the own enumerable string keyed property values of object	function	NO	yes
keys	Creates an array of the own enumerable property names of object	function	NO	yes
merge	This method is like _.assign except that it recursively merges own and inherited enumerable string keyed properties of source objects into the destination object	function	NO	yes

Util

Name	Description	Type	Required	HarmonyOS Support
range	Creates an array of numbers (positive and/or negative) progressing from start up to, but not including, end	function	NO	yes
toPath	Converts value to a property path array	function	NO	yes
times	Invokes the iteratee n times, returning an array of the results of each invocation	function	NO	yes

Lang

Name	Description	Type	Required	HarmonyOS Support
isEmpty	Checks if value is an empty object, collection, map, or set	function	NO	yes
isEqual	Performs a deep comparison between two values to determine if they are equivalent	function	NO	yes
isNumber	Checks if value is classified as a Number primitive or object	function	NO	yes
cloneDeep	This method is like _.clone except that it recursively clones value	function	NO	yes
isNaN	Checks if value is NaN	function	NO	yes
isString	Checks if value is classified as a String primitive or object	function	NO	yes

Function

Name	Description	Type	Required	HarmonyOS Support
debounce	Creates a debounced function that delays invoking func until after wait milliseconds have elapsed since the last time the debounced function was invoked	function	NO	yes
throttle	Creates a throttled function that only invokes func at most once per every wait milliseconds	function	NO	yes

Number

Name	Description	Type	Required	HarmonyOS Support
clamp	Clamps number within the inclusive lower and upper bounds	function	NO	yes
random	Produces a random number between the inclusive lower and upper bounds	function	NO	yes
inRange	Checks if n is between start and up to, but not including, end	function	NO	yes

Seq

Name	Description	Type	Required	HarmonyOS Support
chain	Creates a lodash wrapper instance that wraps value with explicit method chain sequences enabled	function	NO	yes

遗留问题

其他

开源协议

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