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doc: clarify out-of-bounds behavior of buf[index]

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PR-URL: https://github.com/nodejs/node/pull/11286
Fixes: https://github.com/nodejs/node/issues/11244
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ron Korving <ron@ronkorving.nl>
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Nikolai Vavilov 2017-02-10 15:30:51 +02:00
parent 642baf4699
commit 01ffe30d18
1 changed files with 4 additions and 0 deletions
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doc/api/buffer.md
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@ -947,6 +947,10 @@ The index operator `[index]` can be used to get and set the octet at position
`index` in `buf`. The values refer to individual bytes, so the legal value
range is between `0x00` and `0xFF` (hex) or `0` and `255` (decimal).
This operator is inherited from `Uint8Array`, so its behavior on out-of-bounds
access is the same as `UInt8Array` - that is, getting returns `undefined` and
setting does nothing.
Example: Copy an ASCII string into a `Buffer`, one byte at a time
```js