[Issue 8920] New: iota(byte), iota(ushort)

d-bugmail at puremagic.com d-bugmail at puremagic.com
Wed Oct 31 04:00:59 PDT 2012


http://d.puremagic.com/issues/show_bug.cgi?id=8920

           Summary: iota(byte), iota(ushort)
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2012-10-31 04:00:50 PDT ---
import std.range: iota;
void main() {
    foreach (i; iota(cast(byte)0, cast(byte)10)) {}
    foreach (i; iota(cast(ubyte)0, cast(ubyte)10)) {}
    foreach (i; iota(cast(short)0, cast(short)10)) {}
    foreach (i; iota(cast(ushort)0, cast(ushort)10)) {}
    foreach (i; iota('a', 'f')) {}
}




DMD 2.061alpha shows some iota() problems with arguments of other types:

...\dmd2\src\phobos\std\range.d(4834): Error: cannot implicitly convert
expression (cast(int)this.pastLast - 1) of type int to inout(byte)
test.d(3): Error: template instance std.range.iota!(byte,byte) error
instantiating
...\dmd2\src\phobos\std\range.d(4834): Error: cannot implicitly convert
expression (cast(int)this.pastLast - 1) of type int to inout(ubyte)
test.d(4): Error: template instance std.range.iota!(ubyte,ubyte) error
instantiating
...\dmd2\src\phobos\std\range.d(4834): Error: cannot implicitly convert
expression (cast(int)this.pastLast - 1) of type int to inout(short)
test.d(5): Error: template instance std.range.iota!(short,short) error
instantiating
...\dmd2\src\phobos\std\range.d(4834): Error: cannot implicitly convert
expression (cast(int)this.pastLast - 1) of type int to inout(ushort)
test.d(6): Error: template instance std.range.iota!(ushort,ushort) error
instantiating
test.d(7): Error: template std.range.iota does not match any function template
declaration
...\dmd2\src\phobos\std\range.d(4717): Error: template std.range.iota cannot
deduce template function from argument types !()(char,char)

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