101-tomekwi 中文文档教程

发布于 10年前 浏览 21 项目主页 更新于 3年前

101

NPM构建状态覆盖状态

Why another JS util library?

1) 101 will be maintained to minimize overlap with vanilla JS.

  • 101 utils are made to work well with vanilla JS methods.
  • 101 will only duplicate vanilla JS to provide Functional Programming paradigms, or if the method is not available in a widely supported JS version (currently ES5).
  • Other libraries often duplicate a lot of ES5: forEach, map, reduce, filter, sort, and more.

2) No need for custom builds.

  • With 101, import naturally, and what you use will be bundled.
  • Each util method is a module that can be required require('101/<util>').
  • Currently node/browserify is supported, I will add other module system support on request.
  • Other libraries can be large, and require manually creating custom builds when optimizing for size.

Why not release each as individual modules?

我通常同意这种哲学; 然而,在实践中,遵守模块模式
对于微模块(如 101 中的那些)可能变得非常烦人:

  • Micro-modules existance throughout a project can change very frequently, because of this one may find themselves constantly updating their package.json (repeatedly adding and removing the same micro-modules).
  • Unbundling micro-modules can lead to projects with hundreds of dependencies which can be tedious to maintain.

Installation

npm install 101

Usage

assign (aka extend)

就像 ES6 的 Object.assign。 使用任意数量的对象扩展对象(返回原始对象)。

var assign = require('101/assign');

var target = { foo: 1 };
var source1 = { bar: 1 };
var source2 = { baz: 1 };
assign(target, source1) // { foo: 1, bar: 1, baz: 1 } target extended with source objects
assign(target, source1, source2) // { foo: 1, bar: 1, baz: 1 } target extended with source objects

and

&& 的功能版本。 与 array.reduce 配合使用效果很好。

var and = require('101/and');

and(true, false); // false
and(true, true);  // true
and(true, "foo");  // "foo"

apply

function.apply 的功能版本。 支持部分功能(非常适合数组函数)。

var apply = require('101/apply');
[sum].map(apply(null, [1, 2, 3])); // [6] = [sum(1,2,3)] = [1+2+3]
function sum () {  /* sums all arguments */ }
apply({ prop: 'val' })(function () { return this.prop; });  // 'val'

clone

它是 clone (只导出这个 bc 它在 101 内部使用)

var clone = require('101/clone');
var obj = {
  foo: 1,
  bar: 2
};

clone(obj); // { foo: 1, bar: 2 }

compose

功能组合方法。 与 array.reduce 配合使用效果很好。

var compose = require('101/compose');

compose(isNaN, parseInt)('nope'); // isNaN(parseInt('nope')) // true

converge

将一组函数收敛为一个。 与 compose 配合使用效果很好。

var converge = require('101/converge');

converge(mul, [add, sub])(6, 2); // mul(add(6, 2), sub(6, 2)) // (6+2) * (6-2) = 36

[ {a: true, b: false}
, {a: false, b: false}
, {a: true, b: true}
].filter(converge(and , [pluck("a") , pluck("b")])); // [{a: true, b: true}]

[f, converge(g, [h, i]), j].reduce(compose); // f(g(h(j), i(j)))

curry

返回一个柯里化函数。

var curry = require('101/curry');

function add(a, b) { return a + b; }

var curriedAdd = curry(add);
var add2 = curriedAdd(2);

add2(6); // 8
add2(8); // 10

function join() { return Array.prototype.slice.call(arguments).join(''); }

curry(join, 3)(1)(0)(1); // "101"

envIs

str === process.env.NODE_ENV 的功能版本。 或多个环境。

var envIs = require('101/env-is');
// process.env.NODE_ENV = development
envIs('development');     // true
envIs('production');      // false
envIs('staging', 'production');     // false
envIs('development', 'production'); // true

equals

=== 的功能版本。 支持部分功能(非常适合数组函数)。

var equals = require('101/equals');

equals(1, 1);            // true
[1,2,3].some(equals(1)); // true
equals(1, '1');          // false

exists

简单的存在函数。

var exists = require('101/exists');

exists('foo');     // true
exists(null);      // false
exists(undefined); // false

find

就像 ES6 的 array.find 一样。

在列表中查找传递给定函数(谓词)的第一个值并返回它。 如果没有提供列表,find 将返回一个部分函数,​​它接受一个列表作为第一个参数。

var find = require('101/find');
var hasProps = require('101/has-properties');
var arr = [{ a: 1, b: 1 }, { b: 1 }, { c: 1 }];

var item = find(arr, hasProps({ a:1 }));
// returns { a: 1, b: 1 }
// returns null if not found

findIndex

就像 ES6 的 array.findIndex 一样。

在列表中查找传递给定函数(谓词)的第一个值并返回它的索引。 如果没有提供列表,findIndex 将返回一个部分函数,​​它接受一个列表作为第一个参数。

var findIndex = require('101/find-index');
var arr = [1, 2, 3];

var index = findIndex(arr, function (val, i, arr) {
  return val === 2;
});
// returns 1
// returns -1 if not found

hasKeypaths

确定键路径是否存在并具有指定的值。 支持部分功能(非常适合数组函数和 101/find)。

var hasKeypaths = require('101/has-keypaths');
var obj = {
  foo: {
    bar: {
      qux: 1
    }
  }
};

hasKeypaths(obj, ['foo.bar.qux']);      // true
hasKeypaths(obj, { 'foo.bar.qux': 1 }); // true
hasKeypaths(obj, ['foo.qux']);          // false
hasKeypaths(obj, { 'foo.bar': 2 });     // false
hasKeypaths(obj, { 'foo.bar': 1, 'nope': 1 }); // false

// optional 'deep' arg, defaults to true
var barObj = { bar: 1 };
hasKeypaths(obj, { 'foo.bar': barObj });         // true
hasKeypaths(obj, { 'foo.bar': barObj }, true);   // true
hasKeypaths(obj, { 'foo.bar': barObj }, false);  // false
hasKeypaths(obj, { 'foo.bar': obj.foo }, false); // true
hasKeypaths(obj, ['foo.bar'], false);            // true, uses [hasOwnProperty vs in](http://stackoverflow.com/questions/13632999/if-key-in-object-or-ifobject-hasownpropertykey)
// use it with find, findIndex, or filter!
var arr = [obj, { b: 1 }, { c: 1 }];
find(arr, hasProps({ 'foo.bar.qux':1 })); // { foo: { bar: { qux: 1 } } }
find(arr, hasProps(['foo.bar.qux']));     // { foo: { bar: { qux: 1 } } }

hasProperties

确定键是否存在,如果指定,是否具有值。 支持部分功能(非常适合数组函数和 101/find)。 注意:我正在考虑弃用这种方法,因为它与 has-keypaths 非常相似。

var hasProps = require('101/has-properties');
var obj = {
  qux: 1
};
obj['foo.bar'] = 1

hasProps(obj, ['foo', 'qux']); // true
hasProps(obj, { qux: 1 }) // true

// optional 'deep' arg, defaults to true
var barObj = { bar: 1 };
hasProps(obj, { 'foo.bar': barObj });         // true
hasProps(obj, { 'foo.bar': barObj }, true);   // true
hasProps(obj, { 'foo.bar': barObj }, false);  // false
hasProps(obj, ['foo.bar'], false);            // true, uses [hasOwnProperty vs in](http://stackoverflow.com/questions/13632999/if-key-in-object-or-ifobject-hasownpropertykey)
// use it with find, findIndex, or filter!
var arr = [{ a: 1, b: 1 }, { b: 1 }, { c: 1 }];
find(arr, hasProps({ a:1 })); // { a: 1, b: 1 }
find(arr, hasProps(['a']));   // { a: 1, b: 1 }

instanceOf

JavaScript 的 instanceof 的函数式版本。 支持部分功能(非常适合数组函数)。

var instanceOf = require('101/instance-of');

['foo', 'bar', 1].map(instanceOf('string')); // [true, true, false]

isBoolean

typeof val === 'boolean' 的功能版本。 支持部分功能(非常适合数组函数)。

var isBoolean = require('101/is-boolean');

[true, false, 1].map(isBoolean); // [true, true, false]

isEmpty

val 空对象、数组或对象

var isEmpty = require('101/is-empty');

isEmpty([]); // true
isEmpty({}); // true
isEmpty(""); // true
isEmpty(" "); // false

isFunction

的功能版本 typeof val === 'function'

var isFunction = require('101/is-function');

[parseInt, function () {}, 'foo'].map(isFunction); // [true, true, false]

isNumber

的功能版本 val typeof 'number' 的

var isNumber = require('101/is-number');

['foo', 'bar', 1].map(isNumber); // [false, false, true]

isObject

功能版本 strict object'(而不是数组或 regexp)

var isObject = require('101/is-object');

[{}, { foo: 1 }, 100].map(isObject); // [true, true, false]

isRegExp

检查值是否是 RegExp 的实例

var isRegExp = require('101/is-regexp');

[new RegExp('.*'), /.*/, {}, 1].map(isRegExp); // [true, true, false, false]

isString

val typeof 'string' 的功能版本

var isString = require('101/is-string');

['foo', 'bar', 1].map(isString); // [true, true, false]

last

返回列表的最后一个值

var last = require('101/last');

last([1, 2, 3]); // 3
last('hello');   // 'o'

noop

No-op 函数

require('101/noop'); // function () {}

not

! 的功能版本。

var not = require('101/not');

not(isString)('hey'); // false
not(isString)(100);   // true

omit

返回一个没有指定键的新对象。 支持部分功能(非常适合数组函数,如地图)。

var omit = require('101/omit');
var obj = {
  foo: 1,
  bar: 2
};

omit(obj, 'foo');          // { bar: 1 }
omit(obj, ['foo']);        // { bar: 1 }
omit(obj, ['foo', 'bar']); // { }

// use it with array.map
[obj, obj, obj].map(omit('foo')); // [{ bar: 1 }, { bar: 1 }, { bar: 1 }];

or

|| 的功能版本。 与 array.reduce 配合使用效果很好。

var or = require('101/or');

or(true, true);   // true
or(true, false);  // true
or(false, false); // false
or("foo", false); // "foo"

passAll

多路复用多个函数的参数和 && 的结果。 支持部分功能(非常适合数组函数,如地图)。

var passAll = require('101/pass-all');

['', 'foo', 'bar', 100].map(passAll(isString, isTruthy)); // [false, true, true, false]

passAny

多路复用多个函数的参数和 || 的结果。 支持部分功能(非常适合数组函数,如地图)。

var passAny = require('101/pass-any');

['', 'foo', 'bar', 100].map(passAny(isString, isNumber)); // [true, true, true, true]

pick

返回具有指定键(键值来自 obj)的新对象。 支持正则表达式和部分功能(非常适合数组函数,如 map)。

var pick = require('101/pick');
var obj = {
  foo: 1,
  bar: 2
};

pick(obj, 'foo');          // { foo: 1 }
pick(obj, RegExp('oo$'));  // { foo: 1 }
pick(obj, ['foo']);        // { foo: 1 }
pick(obj, ['foo', 'bar']); // { foo: 1, bar: 2 }

// use it with array.map
[obj, obj, obj].map(pick('foo')); // [{ foo: 1 }, { foo: 1 }, { foo: 1 }];

pluck

obj[key] 的函数式版本,从 obj 返回键的值。 支持部分功能(非常适合数组函数,如地图)。

var pluck = require('101/pluck');
var obj = {
  foo: 1,
  bar: 2
};

pluck(obj, 'foo'); // 1

// use it with array.map
[obj, obj, obj].map(pluck('foo')); // [1, 1, 1]

// supports keypaths by default
var obj = {
  foo: {
    bar: 1
  },
  'foo.bar': 2
};

pluck(obj, 'foo.bar'); // 1, supports keypaths by default
pluck(obj, 'foo.bar', false); // 2, pass false to not use keypaths

set

obj[key] = val 的函数式版本,返回一个带有键和值集的新 obj。 支持部分功能(非常适合数组函数,如地图)。

var set = require('101/set');
var obj = {
  foo: 1,
  bar: 2
};

set(obj, 'foo'); // 1

// use it with array.map
[obj, obj, obj].map(set('foo', 100)); // [{ foo: 100, bar: 2 }, {same}, {same}]

// supports keypaths by default
var obj = {
  foo: 1,
  bar: 2
};

set(obj, 'foo', 100); // { foo: 100, bar:2 }

xor

异或 与 array.reduce 配合使用效果很好。

var xor = require('101/xor');

xor(true, true);   // false
xor(true, false);  // true
xor(false, true);  // true
xor(false, false); // false

License

麻省理工学院

101

NPMBuild StatusCoverage Status

Why another JS util library?

1) 101 will be maintained to minimize overlap with vanilla JS.

  • 101 utils are made to work well with vanilla JS methods.
  • 101 will only duplicate vanilla JS to provide Functional Programming paradigms, or if the method is not available in a widely supported JS version (currently ES5).
  • Other libraries often duplicate a lot of ES5: forEach, map, reduce, filter, sort, and more.

2) No need for custom builds.

  • With 101, import naturally, and what you use will be bundled.
  • Each util method is a module that can be required require('101/<util>').
  • Currently node/browserify is supported, I will add other module system support on request.
  • Other libraries can be large, and require manually creating custom builds when optimizing for size.

Why not release each as individual modules?

I usually agree with this philosophy; however, while in practice, adherence to the module-pattern
can become quite annoying for micro-modules (like those in 101):

  • Micro-modules existance throughout a project can change very frequently, because of this one may find themselves constantly updating their package.json (repeatedly adding and removing the same micro-modules).
  • Unbundling micro-modules can lead to projects with hundreds of dependencies which can be tedious to maintain.

Installation

npm install 101

Usage

assign (aka extend)

Just like ES6's Object.assign. Extend an object with any number of objects (returns original).

var assign = require('101/assign');

var target = { foo: 1 };
var source1 = { bar: 1 };
var source2 = { baz: 1 };
assign(target, source1) // { foo: 1, bar: 1, baz: 1 } target extended with source objects
assign(target, source1, source2) // { foo: 1, bar: 1, baz: 1 } target extended with source objects

and

Functional version of &&. Works great with array.reduce.

var and = require('101/and');

and(true, false); // false
and(true, true);  // true
and(true, "foo");  // "foo"

apply

Functional version of function.apply. Supports partial functionality (great with array functions).

var apply = require('101/apply');
[sum].map(apply(null, [1, 2, 3])); // [6] = [sum(1,2,3)] = [1+2+3]
function sum () {  /* sums all arguments */ }
apply({ prop: 'val' })(function () { return this.prop; });  // 'val'

clone

It's clone (Only exporting this bc it is used internal to 101)

var clone = require('101/clone');
var obj = {
  foo: 1,
  bar: 2
};

clone(obj); // { foo: 1, bar: 2 }

compose

Functional composition method. Works great with array.reduce.

var compose = require('101/compose');

compose(isNaN, parseInt)('nope'); // isNaN(parseInt('nope')) // true

converge

Converges an array of functions into one. Works great with compose.

var converge = require('101/converge');

converge(mul, [add, sub])(6, 2); // mul(add(6, 2), sub(6, 2)) // (6+2) * (6-2) = 36

[ {a: true, b: false}
, {a: false, b: false}
, {a: true, b: true}
].filter(converge(and , [pluck("a") , pluck("b")])); // [{a: true, b: true}]

[f, converge(g, [h, i]), j].reduce(compose); // f(g(h(j), i(j)))

curry

Returns a curried function.

var curry = require('101/curry');

function add(a, b) { return a + b; }

var curriedAdd = curry(add);
var add2 = curriedAdd(2);

add2(6); // 8
add2(8); // 10

function join() { return Array.prototype.slice.call(arguments).join(''); }

curry(join, 3)(1)(0)(1); // "101"

envIs

Functional version of str === process.env.NODE_ENV. Or's multiple environments.

var envIs = require('101/env-is');
// process.env.NODE_ENV = development
envIs('development');     // true
envIs('production');      // false
envIs('staging', 'production');     // false
envIs('development', 'production'); // true

equals

Functional version of ===. Supports partial functionality (great with array functions).

var equals = require('101/equals');

equals(1, 1);            // true
[1,2,3].some(equals(1)); // true
equals(1, '1');          // false

exists

Simple exists function.

var exists = require('101/exists');

exists('foo');     // true
exists(null);      // false
exists(undefined); // false

find

Just like ES6's array.find.

Finds the first value in the list that passes the given function (predicate) and returns it. If list is not provided find will return a partial-function which accepts a list as the first argument.

var find = require('101/find');
var hasProps = require('101/has-properties');
var arr = [{ a: 1, b: 1 }, { b: 1 }, { c: 1 }];

var item = find(arr, hasProps({ a:1 }));
// returns { a: 1, b: 1 }
// returns null if not found

findIndex

Just like ES6's array.findIndex.

Finds the first value in the list that passes the given function (predicate) and returns it's index. If list is not provided findIndex will return a partial-function which accepts a list as the first argument.

var findIndex = require('101/find-index');
var arr = [1, 2, 3];

var index = findIndex(arr, function (val, i, arr) {
  return val === 2;
});
// returns 1
// returns -1 if not found

hasKeypaths

Determines whether the keypaths exist and have the specified values. Supports partial functionality (great with array functions, and 101/find).

var hasKeypaths = require('101/has-keypaths');
var obj = {
  foo: {
    bar: {
      qux: 1
    }
  }
};

hasKeypaths(obj, ['foo.bar.qux']);      // true
hasKeypaths(obj, { 'foo.bar.qux': 1 }); // true
hasKeypaths(obj, ['foo.qux']);          // false
hasKeypaths(obj, { 'foo.bar': 2 });     // false
hasKeypaths(obj, { 'foo.bar': 1, 'nope': 1 }); // false

// optional 'deep' arg, defaults to true
var barObj = { bar: 1 };
hasKeypaths(obj, { 'foo.bar': barObj });         // true
hasKeypaths(obj, { 'foo.bar': barObj }, true);   // true
hasKeypaths(obj, { 'foo.bar': barObj }, false);  // false
hasKeypaths(obj, { 'foo.bar': obj.foo }, false); // true
hasKeypaths(obj, ['foo.bar'], false);            // true, uses [hasOwnProperty vs in](http://stackoverflow.com/questions/13632999/if-key-in-object-or-ifobject-hasownpropertykey)
// use it with find, findIndex, or filter!
var arr = [obj, { b: 1 }, { c: 1 }];
find(arr, hasProps({ 'foo.bar.qux':1 })); // { foo: { bar: { qux: 1 } } }
find(arr, hasProps(['foo.bar.qux']));     // { foo: { bar: { qux: 1 } } }

hasProperties

Determines whether the keys exist and, if specified, has the values. Supports partial functionality (great with array functions, and 101/find). NOTE: I am considering deprecating this method, bc it is so similar to has-keypaths.

var hasProps = require('101/has-properties');
var obj = {
  qux: 1
};
obj['foo.bar'] = 1

hasProps(obj, ['foo', 'qux']); // true
hasProps(obj, { qux: 1 }) // true

// optional 'deep' arg, defaults to true
var barObj = { bar: 1 };
hasProps(obj, { 'foo.bar': barObj });         // true
hasProps(obj, { 'foo.bar': barObj }, true);   // true
hasProps(obj, { 'foo.bar': barObj }, false);  // false
hasProps(obj, ['foo.bar'], false);            // true, uses [hasOwnProperty vs in](http://stackoverflow.com/questions/13632999/if-key-in-object-or-ifobject-hasownpropertykey)
// use it with find, findIndex, or filter!
var arr = [{ a: 1, b: 1 }, { b: 1 }, { c: 1 }];
find(arr, hasProps({ a:1 })); // { a: 1, b: 1 }
find(arr, hasProps(['a']));   // { a: 1, b: 1 }

instanceOf

Functional version of JavaScript's instanceof. Supports partial functionality (great with array functions).

var instanceOf = require('101/instance-of');

['foo', 'bar', 1].map(instanceOf('string')); // [true, true, false]

isBoolean

Functional version of typeof val === 'boolean'. Supports partial functionality (great with array functions).

var isBoolean = require('101/is-boolean');

[true, false, 1].map(isBoolean); // [true, true, false]

isEmpty

Functional version of val empty object, array or object

var isEmpty = require('101/is-empty');

isEmpty([]); // true
isEmpty({}); // true
isEmpty(""); // true
isEmpty(" "); // false

isFunction

Functional version of typeof val === 'function'

var isFunction = require('101/is-function');

[parseInt, function () {}, 'foo'].map(isFunction); // [true, true, false]

isNumber

Functional version of val typeof 'number'

var isNumber = require('101/is-number');

['foo', 'bar', 1].map(isNumber); // [false, false, true]

isObject

Functional strict version of val typeof 'object' (and not array or regexp)

var isObject = require('101/is-object');

[{}, { foo: 1 }, 100].map(isObject); // [true, true, false]

isRegExp

Check if a value is an instance of RegExp

var isRegExp = require('101/is-regexp');

[new RegExp('.*'), /.*/, {}, 1].map(isRegExp); // [true, true, false, false]

isString

Functional version of val typeof 'string'

var isString = require('101/is-string');

['foo', 'bar', 1].map(isString); // [true, true, false]

last

Returns the last value of a list

var last = require('101/last');

last([1, 2, 3]); // 3
last('hello');   // 'o'

noop

No-op function

require('101/noop'); // function () {}

not

Functional version of !.

var not = require('101/not');

not(isString)('hey'); // false
not(isString)(100);   // true

omit

Returns a new object without the specified keys. Supports partial functionality (great with array functions, like map).

var omit = require('101/omit');
var obj = {
  foo: 1,
  bar: 2
};

omit(obj, 'foo');          // { bar: 1 }
omit(obj, ['foo']);        // { bar: 1 }
omit(obj, ['foo', 'bar']); // { }

// use it with array.map
[obj, obj, obj].map(omit('foo')); // [{ bar: 1 }, { bar: 1 }, { bar: 1 }];

or

Functional version of ||. Works great with array.reduce.

var or = require('101/or');

or(true, true);   // true
or(true, false);  // true
or(false, false); // false
or("foo", false); // "foo"

passAll

Muxes arguments across many functions and &&'s the results. Supports partial functionality (great with array functions, like map).

var passAll = require('101/pass-all');

['', 'foo', 'bar', 100].map(passAll(isString, isTruthy)); // [false, true, true, false]

passAny

Muxes arguments across many functions and ||'s the results. Supports partial functionality (great with array functions, like map).

var passAny = require('101/pass-any');

['', 'foo', 'bar', 100].map(passAny(isString, isNumber)); // [true, true, true, true]

pick

Returns a new object with the specified keys (with key values from obj). Supports regular expressions and partial functionality (great with array functions, like map).

var pick = require('101/pick');
var obj = {
  foo: 1,
  bar: 2
};

pick(obj, 'foo');          // { foo: 1 }
pick(obj, RegExp('oo$'));  // { foo: 1 }
pick(obj, ['foo']);        // { foo: 1 }
pick(obj, ['foo', 'bar']); // { foo: 1, bar: 2 }

// use it with array.map
[obj, obj, obj].map(pick('foo')); // [{ foo: 1 }, { foo: 1 }, { foo: 1 }];

pluck

Functional version of obj[key], returns the value of the key from obj. Supports partial functionality (great with array functions, like map).

var pluck = require('101/pluck');
var obj = {
  foo: 1,
  bar: 2
};

pluck(obj, 'foo'); // 1

// use it with array.map
[obj, obj, obj].map(pluck('foo')); // [1, 1, 1]

// supports keypaths by default
var obj = {
  foo: {
    bar: 1
  },
  'foo.bar': 2
};

pluck(obj, 'foo.bar'); // 1, supports keypaths by default
pluck(obj, 'foo.bar', false); // 2, pass false to not use keypaths

set

Functional version of obj[key] = val, returns a new obj with the key and value set. Supports partial functionality (great with array functions, like map).

var set = require('101/set');
var obj = {
  foo: 1,
  bar: 2
};

set(obj, 'foo'); // 1

// use it with array.map
[obj, obj, obj].map(set('foo', 100)); // [{ foo: 100, bar: 2 }, {same}, {same}]

// supports keypaths by default
var obj = {
  foo: 1,
  bar: 2
};

set(obj, 'foo', 100); // { foo: 100, bar:2 }

xor

Exclusive or Works great with array.reduce.

var xor = require('101/xor');

xor(true, true);   // false
xor(true, false);  // true
xor(false, true);  // true
xor(false, false); // false

License

MIT

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