Hi,everyone,
How to use strip or stripRight on char[len]?

For example:

string abcs ="aabc    ";
auto abcsaa = abcs.stripRight;
writeln(abcsaa);
writeln("---abcsaa--stripRight ok---- ");


 char[100] abc ="aabc    ";
 auto abcaa = ((abc).dup).stripRight;
 writeln(abcaa);
writeln("----stripRight error----- ");

Where is error? Thanks.

On Thursday, 22 February 2018 at 16:55:14 UTC, FrankLike wrote:
>  char[100] abc ="aabc    ";
>  auto abcaa = ((abc).dup).stripRight;

try:

auto abcaa = stripRight(abc[])

just make sure you do NOT return that abcaa from the function or store it in an object. It still refers to the static array that does not outlive that function.

It is simply that these functions require a slice so it can resize it and you can't resize a static array.

On Thursday, 22 February 2018 at 16:59:40 UTC, Adam D. Ruppe wrote:
> On Thursday, 22 February 2018 at 16:55:14 UTC, FrankLike wrote:

> It is simply that these functions require a slice so it can resize it and you can't resize a static array.

   char[100] abc ="aabc    ";
   string aa = to!string(abc);
   string aaa = aa.stripRight;


It get the same result.

On Thursday, 22 February 2018 at 17:08:14 UTC, FrankLike wrote:
> On Thursday, 22 February 2018 at 16:59:40 UTC, Adam D. Ruppe wrote:
>> On Thursday, 22 February 2018 at 16:55:14 UTC, FrankLike wrote:
>
>> It is simply that these functions require a slice so it can resize it and you can't resize a static array.
>
    char[100] abc ="aabc    ";
    char[] p = abc;
    string aa = to!string(p);
     string aaa = aa.stripRight;


 It get the same result too.

On Thursday, 22 February 2018 at 16:59:40 UTC, Adam D. Ruppe wrote:
> On Thursday, 22 February 2018 at 16:55:14 UTC, FrankLike wrote:
>>  char[100] abc ="aabc    ";
>>  auto abcaa = ((abc).dup).stripRight;
>
> try:
>
> auto abcaa = stripRight(abc[])

Now,I want to get the result:

 char[100] Path;
 writeln("will get path ");
 SHGetSpecialFolderPath(NULL,cast(char*)Path.ptr,CSIDL_DESKTOP,0);

if use char[] Path;

It not get the result.

How to strip the Path? Thanks.

On Thursday, 22 February 2018 at 17:44:53 UTC, FrankLike wrote:
> SHGetSpecialFolderPath(NULL,cast(char*)Path.ptr,CSIDL_DESKTOP,0);

You don't strip that at all, the function writes a zero-terminated string to the buffer. So either: use the pointer as-is to other C functions, or  call the `fromStringz` function in Phobos to convert it and copy it if you want to store it.

http://dpldocs.info/experimental-docs/std.string.fromStringz.html

import std.string;
string s = fromStringz(abc.ptr).idup; // the idup copies it out

On Thursday, 22 February 2018 at 18:02:11 UTC, Adam D. Ruppe wrote:

> You don't strip that at all, the function writes a zero-terminated string to the buffer.

Thank you very much ! I forgot it.