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digitalmars.D.learn - const strings (D1.0)

reply Bill Baxter <dnewsgroup billbaxter.com> writes:
Is this correct behavior?

import std.stdio;
import std.string;

const MM_REAL_STR =       "real";
const MM_INT_STR =        "integer";


void main()
{
     writefln(toString(MM_REAL_STR.ptr)); // --> prints "realinteger"
}


I thought all literal strings were supposed to be zero terminated.
That doesn't go for const strings?

--bb
Mar 03 2008
parent reply Derek Parnell <derek psych.ward> writes:
On Mon, 03 Mar 2008 18:27:12 +0900, Bill Baxter wrote:

 Is this correct behavior?
 
 import std.stdio;
 import std.string;
 
 const MM_REAL_STR =       "real";
 const MM_INT_STR =        "integer";
 
 void main()
 {
      writefln(toString(MM_REAL_STR.ptr)); // --> prints "realinteger"
 }
 
 I thought all literal strings were supposed to be zero terminated.
 That doesn't go for const strings?

The problem is that these are NOT strings, but fixed length character literals, and those beasties don't have trailing zeros. Try this instead ... const string MM_REAL_STR = "real"; const string MM_INT_STR = "integer"; -- Derek Parnell Melbourne, Australia skype: derek.j.parnell
Mar 03 2008
parent Bill Baxter <dnewsgroup billbaxter.com> writes:
Derek Parnell wrote:
 On Mon, 03 Mar 2008 18:27:12 +0900, Bill Baxter wrote:
 
 Is this correct behavior?

 import std.stdio;
 import std.string;

 const MM_REAL_STR =       "real";
 const MM_INT_STR =        "integer";

 void main()
 {
      writefln(toString(MM_REAL_STR.ptr)); // --> prints "realinteger"
 }

 I thought all literal strings were supposed to be zero terminated.
 That doesn't go for const strings?

The problem is that these are NOT strings, but fixed length character literals, and those beasties don't have trailing zeros. Try this instead ... const string MM_REAL_STR = "real"; const string MM_INT_STR = "integer";

Ooohhh. Great. That works. Thanks a lot. --bb
Mar 03 2008