• Tom McMurray <tomm pplus.com.au> Sep 05 2007
• BCS <ao pathlink.com> Sep 05 2007
• Daniel Keep <daniel.keep.lists gmail.com> Sep 05 2007
• torhu <no spam.invalid> Sep 05 2007

Tom McMurray <tomm pplus.com.au> writes:

I just downloaded version 2.003 or DMD and tried to compile the following :-

class stringtest
{
   void st1()
   {
       char[] s1 = "abcde";
   }
}

This fails with the error :-

Error: cannot implicitly convert expression ("abcde") of type invariant
char[5u] to char[]

Is this a bug or am I doing something stupid.  This code compiled successfully
on previous versions of the compiler.  Any help would be appreciated

BCS <ao pathlink.com> writes:

Reply to Tom,

 I just downloaded version 2.003 or DMD and tried to compile the
 following :-
 
 class stringtest
 {
 void st1()
 {
 char[] s1 = "abcde";
 }
 }
 This fails with the error :-
 
 Error: cannot implicitly convert expression ("abcde") of type
 invariant char[5u] to char[]
 
 Is this a bug or am I doing something stupid.  This code compiled
 successfully on previous versions of the compiler.  Any help would be
 appreciated
 


char[] s1 = "abcde"[];


this should work.

(No comment on the issue)

Daniel Keep <daniel.keep.lists gmail.com> writes:

Tom McMurray wrote:
 I just downloaded version 2.003 or DMD and tried to compile the following :-
 
 class stringtest
 {
    void st1()
    {
        char[] s1 = "abcde";
    }
 }
 
 This fails with the error :-
 
 Error: cannot implicitly convert expression ("abcde") of type invariant
char[5u] to char[]
 
 Is this a bug or am I doing something stupid.  This code compiled successfully
on previous versions of the compiler.  Any help would be appreciated


D 2.0 is not just the version after D 1.0; it has several breaking
changes.  This is not a bug: it is a side effect of the new const system
in D 2.0.

If you downloaded it thinking it was simply a newer compiler, you might
be well advised to go back to the latest 1.x compiler.  The 1.x series
is now stable, and the 2.x series compilers could suddenly change at any
moment.

If you downloaded it because you want to play with D 2.0, then I suggest
you re-read the language documentation.  There are various bits and
pieces that have changed, and it'll save you a lot of grief if you get a
handle on it.

	-- Daniel

P.S.  To store a string literal into a char[] in D 2.0, you'll need to
use "abcde".dup in order to make a mutable copy of the string.

torhu <no spam.invalid> writes:

Tom McMurray wrote:
 I just downloaded version 2.003 or DMD and tried to compile the following :-
 
 class stringtest
 {
    void st1()
    {
        char[] s1 = "abcde";
    }
 }
 
 This fails with the error :-
 
 Error: cannot implicitly convert expression ("abcde") of type invariant
char[5u] to char[]
 
 Is this a bug or am I doing something stupid.  This code compiled successfully
on previous versions of the compiler.  Any help would be appreciated


Try 'string' instead of 'char[]'.  String is an alias for 
'const(char)[]', which an 'invariant char[5u]' can be implicitly 
converted to.

And I wouldn't write too much code for D 2.0 just yet, things might 
change.  There was even talk of changing the const stuff.