Re: Problem with insertBack

2016-06-03 Thread John Nixon via Digitalmars-d-learn
On Friday, 3 June 2016 at 15:03:45 UTC, ag0aep6g wrote: On 06/03/2016 04:34 PM, John Nixon wrote: import std.stdio; import std.container; struct CS{ char[] t; CS dup()const{ CS cs; cs.t = this.t.dup; return cs;} }; Aside: No semicolon after struct declarations in D.

Problem with insertBack

2016-06-03 Thread John Nixon via Digitalmars-d-learn
I recently came across another problem with my program in D, found a minimal program showing it, and experimented a little with it as follows: import std.stdio; import std.container; struct CS{ char[] t; CS dup()const{ CS cs; cs.t = this.t.dup; return cs;} }; void main(){

Re: full copies on assignment

2016-05-29 Thread John Nixon via Digitalmars-d-learn
On Friday, 27 May 2016 at 08:59:43 UTC, Marc Schütz wrote: Yes indeed it does. Thanks. Something in my version must have been different.

Re: full copies on assignment

2016-05-26 Thread John Nixon via Digitalmars-d-learn
On Wednesday, 25 May 2016 at 15:44:34 UTC, Marc Schütz wrote: On Tuesday, 24 May 2016 at 20:58:11 UTC, John Nixon wrote: On Tuesday, 24 May 2016 at 15:17:37 UTC, Adam D. Ruppe wrote: On Tuesday, 24 May 2016 at 14:29:53 UTC, John Nixon wrote: Or add an explicit constructor: struct CS {

Re: full copies on assignment

2016-05-24 Thread John Nixon via Digitalmars-d-learn
On Tuesday, 24 May 2016 at 15:17:37 UTC, Adam D. Ruppe wrote: On Tuesday, 24 May 2016 at 14:29:53 UTC, John Nixon wrote: This naively doesn’t seem right because the RHS of an assignment should not be altered by it. It's because the char[] being shallow copied still leads to mutable stuff.

full copies on assignment

2016-05-24 Thread John Nixon via Digitalmars-d-learn
1 import std.stdio; 2 3 struct CS{ 4 char[] t; 5 CS opAssign(const CS rhs){ 6 writeln("CS.opAssign called"); 7 this.t = rhs.t.dup; 8 return this;} 9 }; 10 void test_fun(const ref CS rhs){ 11 CS cs = rhs;//error cannot implicitly convert expression (rhs) of

Re: No line numbers in compiler error messages

2015-04-24 Thread John Nixon via Digitalmars-d-learn
On Friday, 24 April 2015 at 17:45:49 UTC, Steven Schveighoffer wrote: On 4/24/15 1:20 PM, John Nixon wrote: I am using dmd v2.067.0 on Mac OSX with Terminal and I found the lack of line numbers surprising. Is there something simple I am doing wrong? Do any of the switches on the command line

No line numbers in compiler error messages

2015-04-24 Thread John Nixon via Digitalmars-d-learn
I am using dmd v2.067.0 on Mac OSX with Terminal and I found the lack of line numbers surprising. Is there something simple I am doing wrong? Do any of the switches on the command line do this? BTW I only found out about D a couple of weeks back. It seems to be very impressive! John Nixon