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62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
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// run
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Examples from the language spec section on string conversions.
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package main
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func main() {
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// 1
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_ = string('a') // "a"
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_ = string(-1) // "\ufffd" == "\xef\xbf\xbd"
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_ = string(0xf8) // "\u00f8" == "ø" == "\xc3\xb8"
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type myString string
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_ = myString(0x65e5) // "\u65e5" == "日" == "\xe6\x97\xa5"
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// 2
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_ = string([]byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}) // "hellø"
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_ = string([]byte{}) // ""
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_ = string([]byte(nil)) // ""
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type bytes []byte
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_ = string(bytes{'h', 'e', 'l', 'l', '\xc3', '\xb8'}) // "hellø"
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type myByte byte
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_ = string([]myByte{'w', 'o', 'r', 'l', 'd', '!'}) // "world!"
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_ = myString([]myByte{'\xf0', '\x9f', '\x8c', '\x8d'}) // "🌍
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// 3
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_ = string([]rune{0x767d, 0x9d6c, 0x7fd4}) // "\u767d\u9d6c\u7fd4" == "白鵬翔"
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_ = string([]rune{}) // ""
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_ = string([]rune(nil)) // ""
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type runes []rune
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_ = string(runes{0x767d, 0x9d6c, 0x7fd4}) // "\u767d\u9d6c\u7fd4" == "白鵬翔"
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type myRune rune
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_ = string([]myRune{0x266b, 0x266c}) // "\u266b\u266c" == "♫♬"
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_ = myString([]myRune{0x1f30e}) // "\U0001f30e" == "🌎
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// 4
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_ = []byte("hellø") // []byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}
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_ = []byte("") // []byte{}
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_ = bytes("hellø") // []byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}
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_ = []myByte("world!") // []myByte{'w', 'o', 'r', 'l', 'd', '!'}
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_ = []myByte(myString("🌏")) // []myByte{'\xf0', '\x9f', '\x8c', '\x8f'}
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// 5
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_ = []rune(myString("白鵬翔")) // []rune{0x767d, 0x9d6c, 0x7fd4}
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_ = []rune("") // []rune{}
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_ = runes("白鵬翔") // []rune{0x767d, 0x9d6c, 0x7fd4}
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_ = []myRune("♫♬") // []myRune{0x266b, 0x266c}
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_ = []myRune(myString("🌐")) // []myRune{0x1f310}
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}
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