mirror of https://github.com/tidwall/tile38.git
43 lines
1.0 KiB
Markdown
43 lines
1.0 KiB
Markdown
CAST
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====
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[](https://godoc.org/github.com/tidwall/cast)
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Quickly convert string <-> []byte without memory reallocations and create mutable string or immutable []byte.
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This package is a **danger zone** and should not be entered without understanding the ground rules.
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1. Converting a string -> []byte will result in an immutable byte slice. Editing will cause a panic.
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2. Converting a []byte -> string will result in a mutable string. Editing the originial bytes will change the string too.
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Create immutable []byte:
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```go
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var s = "Hello Planet"
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b := cast.ToBytes(s)
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fmt.Printf("%s\n", "J"+string(b[1:]))
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// Output:
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// Jello Planet
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```
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Create mutable string:
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```go
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var b = []byte("Hello Planet")
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s := cast.ToString(b)
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b[0] = 'J'
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fmt.Printf("%s\n", s)
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// Output:
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// Jello Planet
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```
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## Contact
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Josh Baker [@tidwall](http://twitter.com/tidwall)
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## License
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CAST source code is available under the MIT [License](/LICENSE).
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