How to use the wrap function from lodash
Find comprehensive JavaScript lodash.wrap code examples handpicked from public code repositorys.
lodash.wrap is a utility function in Lodash that returns a new function that wraps the original function with a wrapper function.
6565 6566 6567 6568 6569 6570 6571 6572 6573 6574* @param {*} value The value to wrap. * @param {Function} wrapper The wrapper function. * @returns {Function} Returns the new function. * @example * * var p = _.wrap(_.escape, function(func, text) { * return '<p>' + func(text) + '</p>'; * }); * * p('Fred, Wilma, & Pebbles');
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433 434 435 436 437 438 439 440 441 442module.exports.valuesIn = _.valuesIn; module.exports.walk = _.walk; module.exports.weave = _.weave; module.exports.without = _.without; module.exports.words = _.words; module.exports.wrap = _.wrap; module.exports.xor = _.xor; module.exports.xorBy = _.xorBy; module.exports.xorWith = _.xorWith; module.exports.zip = _.zip;
191220+ 92 other calls in file
How does lodash.wrap work?
lodash.wrap takes three arguments: the original func to wrap, the wrapper function that will be called with the original function as its first argument, and an optional options object.
The wrapper function should take two arguments: the original func and an array of arguments that will be passed to the original function when it is called. The wrapper function can perform some pre- or post-processing of the arguments or the result of the original function before returning the final result.
If the options object is provided, it can contain two properties: partially and holder. The partially property specifies whether the wrapper function should be invoked with _.partial instead of _.partialRight. The holder property specifies the this binding of func.
The resulting wrapped function can be called like the original function, but with an optional wrapper function that will be applied to its result.
For example, the following code wraps a function that doubles a number with a wrapper function that multiplies its result by 2:
javascriptconst _ = require('lodash');
function double(n) {
return n * 2;
}
const wrapped = _.wrap(double, (func, n) => func(n) * 2);
console.log(wrapped(3)); // Output: 12
In this example, _.wrap() is called with the double function as the first argument and a wrapper function that takes func and n as its arguments and returns func(n) * 2. The resulting wrapped function is stored in the wrapped variable, which is called with an argument of 3. The result is 12, which is the original double function result multiplied by 2 by the wrapper function.
GitHub: mdmarufsarker/lodash
356 357 358 359 360 361 362 363 364 365 366 367 368 369throttle(); const unary = _.unary(n => n + 1); console.log(unary(1, 2)); // => 2 const wrap = _.wrap(n => n + 1, n => n * 2); console.log(wrap(1)); // => 4 // Lang
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GitHub: Hupeng7/es6demo
272 273 274 275 276 277 278 279 280 281 282var unary1 = _.map(['6', '8', '10'], _.unary(parseInt)); console.log('unary1--->', unary1); //unary1---> [ 6, 8, 10 ] //_.wrap(value,[wrapper=identityssss]) var p = _.wrap(_.escape, function (func, text) { return '<p>' + func(text) + '</p>'; }); var p1 = p('fred,barney, & pebbles'); console.log('p1--->', p1);
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Ai Example
1 2 3 4 5 6 7 8 9const wrapped = _.wrap("Hello, ", function (func) { return "wrap " + func() + "wrap"; }); wrapped(function () { return "world"; }); // Output: 'wrap Hello, world wrap'
In this example, lodash.wrap is used to wrap a function with a prefix and a suffix string. The first argument passed to lodash.wrap is the prefix string 'Hello, '. The second argument is a function that returns the string 'world'. The resulting wrapped function will return the string 'wrap Hello, world wrap'.
269 270 271 272 273 274 275 276 277 278const { insertRule } = contentWindow.CSSStyleSheet.prototype const { deleteRule } = contentWindow.CSSStyleSheet.prototype contentWindow.CSSStyleSheet.prototype.insertRule = _.wrap(insertRule, cssModificationSpy) contentWindow.CSSStyleSheet.prototype.deleteRule = _.wrap(deleteRule, cssModificationSpy) if (config('experimentalFetchPolyfill')) { // drop "fetch" polyfill that replaces it with XMLHttpRequest // from the app iframe that we wrap for network stubbing
000GitHub: sindeshiva/Test
30 31 32 33 34 35 36 37 38 39 40 41// screenshots since its possible two screenshots with // the same name will be written to the file system // when debugging logs automatically prefix the // screenshot id to the debug logs for easier association debug = _.wrap(debug, (fn, str, ...args) => { return fn(`(${__ID__}) ${str}`, ...args) }) const isBlack = (rgba) => {
000GitHub: jquense/MediaServer
14 15 16 17 18 19 20 21 22 23isFalsey: function(obj){ return _.isArray(obj) ? !obj.length : !obj }, camelize: _.wrap(_.camelize, function(c, str){ var camel = c.call(this, str) return camel.charAt(0).toLowerCase() + camel.substring(1); }),
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