mirror of
https://github.com/golang/go
synced 2024-11-12 07:30:25 -07:00
113 lines
1.8 KiB
Go
113 lines
1.8 KiB
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2009 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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package main
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func
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main() {
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var c string;
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a := `abc`;
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b := `xyz`;
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/* print a literal */
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print(`abc`);
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/* print a variable */
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print(b, "-");
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/* catenate literals */
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print(`abc` + `xyz`, "-");
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/* catenate variables */
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print(a+b, "-");
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/* compare literals */
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if `abc` == `xyz` || `abc` != "abc" || `abc` > `xyz` {
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panic("compare literals");
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}
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/* compare variables */
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if a == b || a != a || a > b {
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panic("compare variables");
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}
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/* cat */
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c = a+b;
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print(c, "-");
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/* catequal */
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c = a;
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c += b;
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print(c, "-");
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/* clumsy evaluation */
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c = b;
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c = a + c;
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print(c, "-");
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/* len */
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if len(c) != 6 {
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panic("len ", len(c));
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}
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/* index strings */
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for i:=0; i<len(c); i=i+1 {
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if c[i] != (a+b)[i] {
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panic("index ", i, " ", c[i], " ", (a+b)[i]);
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}
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}
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/* slice strings */
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print(c[0:3], c[3:]);
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print("\n");
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/* create string with integer constant */
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c = string('x');
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if c != "x" {
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panic("create int ", c);
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}
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/* create string with integer variable */
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v := 'x';
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c = string(v);
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if c != "x" {
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panic("create int ", c);
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}
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/* create string with byte array */
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var z1 [3]byte;
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z1[0] = 'a';
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z1[1] = 'b';
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z1[2] = 'c';
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c = string(&z1);
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if c != "abc" {
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panic("create byte array ", c);
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}
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/* create string with int array */
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var z2 [3]int;
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z2[0] = 'a';
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z2[1] = '\u1234';
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z2[2] = 'c';
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c = string(&z2);
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if c != "a\u1234c" {
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panic("create int array ", c);
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}
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/* create string with byte array pointer */
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z3 := new([3]byte);
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z3[0] = 'a';
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z3[1] = 'b';
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z3[2] = 'c';
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c = string(z3);
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if c != "abc" {
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panic("create array pointer ", c);
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}
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}
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