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doc: adding example to Buffer.isBuffer method update buffer.md file #36233

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doc : adding example to Buffer.isBuffer method update buffer.md file
ntedgi Nov 23, 2020
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ntedgi Nov 23, 2020
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fix linting missing semi
ntedgi Nov 23, 2020
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update review suggestions writing shorter tests
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update review suggestions writing shorter tests
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@ntedgi
ntedgi committed Nov 23, 2020
commit e4bd2e18f24e4ddc849517dcda21dbed2f02f94e
20 changes: 5 additions & 15 deletions doc/api/buffer.md
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Expand Up @@ -745,21 +745,11 @@ Returns `true` if `obj` is a `Buffer`, `false` otherwise.

```js

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const buf1 = Buffer.alloc(10);
console.log(Buffer.isBuffer(buf1));
// Prints: true

const buf2 = Buffer.from('this is a test');
console.log(Buffer.isBuffer(buf2));
// Prints: true

const str = 'a string';
console.log(Buffer.isBuffer(str));
// Prints: false

const arr = [];
console.log(Buffer.isBuffer(arr));
// Prints: false
Buffer.isBuffer(Buffer.alloc(10)); // true
Buffer.isBuffer(Buffer.from('foo')); // true
Buffer.isBuffer('a string'); // false
Buffer.isBuffer([]); // false
Buffer.isBuffer(new Uint8Array(1024)); // false

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```
### Static method: `Buffer.isEncoding(encoding)`
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