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Bug 14910 – Take!R does not offer length for char[]

Status: RESOLVED
Resolution: INVALID
Severity: enhancement
Priority: P1
Component: phobos
Product: D
Version: D2
Platform: All
OS: All
Creation time: 2015-08-12T08:39:00Z
Last change time: 2015-08-12T09:17:50Z
Assigned to: nobody
Creator: schneider.cedric

Comments

Comment #0 by schneider.cedric — 2015-08-12T08:39:57Z

unittest { char[] chars = ['h', 'e', 'l', 'l', 'o']; assert(chars.take(2).length == 2); } This unittest fails to compile, complaining that Take!char[] does not have a length, despite Take!R claiming to offer a length property if the input range does.

Comment #1 by petar.p.kirov — 2015-08-12T09:14:46Z

See http://dlang.org/phobos/std_range_primitives#hasLength. Take provides a length property only if for its argument hasLength return true. If you know that you're only dealing with ASCII, you can cast the string to ubyte[], see: http://dpaste.dzfl.pl/fe93a68a3945.