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Update once.md

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Angelos Chalaris
2018-01-02 10:44:42 +02:00
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@ -2,9 +2,8 @@
Ensures a function is called only once.
Utilizing a closure, use a variable flag and set it to true once the function is called
for the first time, preventing it from being called again. Allow the function to be supplied
with an arbitrary number of arguments using the spread/rest (`...`) operator.
Utilizing a closure, use a flag, `called`, and set it to `true` once the function is called for the first time, preventing it from being called again.
Allow the function to be supplied with an arbitrary number of arguments using the spread (`...`) operator.
```js
const once = fn => {