andre/30-seconds-of-code
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Get rid of arguments for bindKey

Browse Source
This commit is contained in:
Siarhei
2018-08-10 11:40:33 +04:00
parent e99d4cef84
commit c3015e47fc
2 changed files with 3 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
snippets/bindKey.md
View File

@ -3,13 +3,10 @@
Creates a function that invokes the method at a given key of an object, optionally adding any additional supplied parameters to the beginning of the arguments. Creates a function that invokes the method at a given key of an object, optionally adding any additional supplied parameters to the beginning of the arguments.
Return a `function` that uses `Function.apply()` to bind `context[fn]` to `context`. Return a `function` that uses `Function.apply()` to bind `context[fn]` to `context`.
Use `Array.concat()` to prepend any additional supplied parameters to the arguments. Use spread operator to prepend any additional supplied parameters to the arguments.
```js ```js
const bindKey = (context, fn, ...args) => const bindKey = (context, fn, ...boundArgs) => (...args) => context[fn].apply(context, [...boundArgs, ...args]);
function() {
return context[fn].apply(context, args.concat(...arguments));
};
``` ```
```js ```js

5
test/bindKey/bindKey.js
View File

@ -1,5 +1,2 @@
const bindKey = (context, fn, ...args) => const bindKey = (context, fn, ...boundArgs) => (...args) => context[fn].apply(context, [...boundArgs, ...args]);
function() {
return context[fn].apply(context, args.concat(...arguments));
};
module.exports = bindKey; module.exports = bindKey;