Re: Problem with std.string.strip(): Can't use result in format routine

[Ky-Anh Huynh via Digitalmars-d-learn]

On Tuesday, 5 September 2017 at 13:56:20 UTC, Andrea Fontana 
wrote:
I used `lines(stdin)` as in 
https://dlang.org/phobos/std_stdio.html#.lines . My source 
code is here


https://github.com/icy/dusybox/blob/master/src/plotbar/main.d#L47 .

Thanks for your support.


I think formattedRead is consuming your string.


Great catch. You're right. Thanks a lot.

`strip()` returns a slice. I use another reference variable to 
save them and it's fine now.


[code]
auto line_st = line.strip();
auto line_st2 = line_st;


writefln("Stripped lined is %s", line_st2); // works fine
[/code]

Re: Problem with std.string.strip(): Can't use result in format routine

[Andrea Fontana via Digitalmars-d-learn]

On Tuesday, 5 September 2017 at 13:40:18 UTC, Ky-Anh Huynh wrote:

On Tuesday, 5 September 2017 at 13:17:34 UTC, Azi Hassan wrote:


Maybe it has something to do with how you read from STDIN. Can 
you show that part of the code to see if I can reproduce the 
issue ?


I used `lines(stdin)` as in 
https://dlang.org/phobos/std_stdio.html#.lines . My source code 
is here


https://github.com/icy/dusybox/blob/master/src/plotbar/main.d#L47 .

Thanks for your support.


I think formattedRead is consuming your string.

Andrea

Re: Problem with std.string.strip(): Can't use result in format routine

[Ky-Anh Huynh via Digitalmars-d-learn]

On Tuesday, 5 September 2017 at 13:17:34 UTC, Azi Hassan wrote:


Maybe it has something to do with how you read from STDIN. Can 
you show that part of the code to see if I can reproduce the 
issue ?


I used `lines(stdin)` as in 
https://dlang.org/phobos/std_stdio.html#.lines . My source code 
is here


https://github.com/icy/dusybox/blob/master/src/plotbar/main.d#L47 
.


Thanks for your support.

Re: Problem with std.string.strip(): Can't use result in format routine

[Azi Hassan via Digitalmars-d-learn]

On Tuesday, 5 September 2017 at 12:38:54 UTC, Ky-Anh Huynh wrote:

Hi,

I read line from STDIN , and strip them

[code]
auto line_st = line.strip();
[/code]


However, I can't use result in another format routine. Assume 
my input line is "foobar":


[code]
writeln("Stripped line is %s", line_st);
[/code]

This code only prints "Stripped line is ". If I use instead

[code]
writeln("Stripped line is %s", line.strip());
[/code]

the result is "Stripped line is foobar".

What're the difference between the two uses? I'm using `dmd 
v2.075.1`.


Thanks a lot.


Maybe it has something to do with how you read from STDIN. Can 
you show that part of the code to see if I can reproduce the 
issue ?

Problem with std.string.strip(): Can't use result in format routine

[Ky-Anh Huynh via Digitalmars-d-learn]

Hi,

I read line from STDIN , and strip them

[code]
auto line_st = line.strip();
[/code]


However, I can't use result in another format routine. Assume my 
input line is "foobar":


[code]
writeln("Stripped line is %s", line_st);
[/code]

This code only prints "Stripped line is ". If I use instead

[code]
writeln("Stripped line is %s", line.strip());
[/code]

the result is "Stripped line is foobar".

What're the difference between the two uses? I'm using `dmd 
v2.075.1`.


Thanks a lot.