mirror of
https://github.com/golang/go
synced 2024-11-26 02:57:57 -07:00
104 lines
1.6 KiB
Go
104 lines
1.6 KiB
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
|
|
|
|
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
|
|
package main
|
|
|
|
func
|
|
main()
|
|
{
|
|
var c string;
|
|
|
|
a := `abc`;
|
|
b := `xyz`;
|
|
|
|
/* print a literal */
|
|
print `abc`;
|
|
|
|
/* print a variable */
|
|
print b, "-";
|
|
|
|
/* catenate literals */
|
|
print `abc` + `xyz`, "-";
|
|
|
|
/* catenate variables */
|
|
print a+b, "-";
|
|
|
|
/* compare literals */
|
|
if `abc` == `xyz` || `abc` != "abc" || `abc` > `xyz` {
|
|
panic "compare literals";
|
|
}
|
|
|
|
/* compare variables */
|
|
if a == b || a != a || a > b {
|
|
panic "compare variables";
|
|
}
|
|
|
|
/* cat */
|
|
c = a+b;
|
|
print c, "-";
|
|
|
|
/* catequal */
|
|
c = a;
|
|
c += b;
|
|
print c, "-";
|
|
|
|
/* clumsy evaluation */
|
|
c = b;
|
|
c = a + c;
|
|
print c, "-";
|
|
|
|
/* len */
|
|
if len(c) != 6 {
|
|
panic "len ", len(c);
|
|
}
|
|
|
|
/* index strings */
|
|
for i:=0; i<len(c); i=i+1 {
|
|
if c[i] != (a+b)[i] {
|
|
panic "index ", i, " ", c[i], " ", (a+b)[i];
|
|
}
|
|
}
|
|
|
|
/* slice strings */
|
|
print c[0:3], c[3:6];
|
|
|
|
print "\n";
|
|
|
|
/* create string with integer constant */
|
|
c = string('x');
|
|
if c != "x" {
|
|
panic "create int ", c;
|
|
}
|
|
|
|
/* create string with integer variable */
|
|
v := 'x';
|
|
c = string(v);
|
|
if c != "x" {
|
|
panic "create int ", c;
|
|
}
|
|
|
|
/* create string with byte array */
|
|
var z1 [3]byte;
|
|
z1[0] = 'a';
|
|
z1[1] = 'b';
|
|
z1[2] = 'c';
|
|
c = string(z1);
|
|
if c != "abc" {
|
|
panic "create array ", c;
|
|
}
|
|
|
|
/* create string with byte array pointer */
|
|
z2 := new([3]byte);
|
|
z2[0] = 'a';
|
|
z2[1] = 'b';
|
|
z2[2] = 'c';
|
|
c = string(z2);
|
|
if c != "abc" {
|
|
panic "create array pointer ", c;
|
|
}
|
|
}
|