• Andrey (5/15) Oct 21 2019 Somewhere in program I want to check an existance:
• Nicholas Wilson (9/24) Oct 21 2019 pragma(msg,typeof(globalvalues));
• Andrey (4/10) Oct 21 2019 As I understand - yes. It doesn't work with immutable object.

Andrey <saasecondbox yandex.ru> writes:

Hello,
I have got a global constant immutable array:
 immutable globalvalues = sort(cast(wstring[])["й", "ц", "ук", 
 "н"]);

Somewhere in program I want to check an existance:
 globalvalues.contains("ук"w).writeln;

But get an error:
 Error: template std.range.SortedRange!(wstring[], "a < 
 b").SortedRange.contains cannot deduce function from argument 
 types !()(wstring) immutable, candidates are:
 /dlang/ldc-1.17.0/bin/../import/std/range/package.d(10993):
 std.range.SortedRange!(wstring[], "a < 
 b").SortedRange.contains(V)(V value) if 
 (isRandomAccessRange!Range)

Why I can't check?

Nicholas Wilson <iamthewilsonator hotmail.com> writes:

On Monday, 21 October 2019 at 10:14:54 UTC, Andrey wrote:
 Hello,
 I have got a global constant immutable array:
 immutable globalvalues = sort(cast(wstring[])["й", "ц", "ук", 
 "н"]);

 Somewhere in program I want to check an existance:
 globalvalues.contains("ук"w).writeln;

 But get an error:
 Error: template std.range.SortedRange!(wstring[], "a < 
 b").SortedRange.contains cannot deduce function from argument 
 types !()(wstring) immutable, candidates are:
 /dlang/ldc-1.17.0/bin/../import/std/range/package.d(10993):
 std.range.SortedRange!(wstring[], "a < 
 b").SortedRange.contains(V)(V value) if 
 (isRandomAccessRange!Range)

 Why I can't check?

pragma(msg,typeof(globalvalues));

gives immutable(SortedRange!(wstring[], "a < b"))

and

(cast(SortedRange!(wstring[], "a < 
b"))globalvalues).contains("ук"w).writeln;

works, so I guess contains doesn't work with immutable?
If you can do some more research into this and confirm it then, 
please file a bug report.

Andrey <saasecondbox yandex.ru> writes:

On Monday, 21 October 2019 at 20:44:29 UTC, Nicholas Wilson wrote:
 works, so I guess contains doesn't work with immutable?
 If you can do some more research into this and confirm it then, 
 please file a bug report.

As I understand - yes. It doesn't work with immutable object.
Also I see the same problem with 'const' and 'shared' object:
 shared values = sort(cast(wstring[])["й", "ц", "ук", "н"]);
 const values = sort(cast(wstring[])["й", "ц", "ук", "н"]);
 values.contains("ук"w).writeln; // error

So you think it is a bug in compiler?