On Saturday, 27 January 2018 at 16:10:29 UTC, Jonathan M Davis
wrote:
On Saturday, January 27, 2018 13:29:00 kdevel via
Digitalmars-d-learn wrote:
What's wrong here? And why is the "selective import" of
enforce necessary?
Because you named your module enforce. As such, by default,
referring to enforce inside of the module refers to the module.
Having the selective import overrides that.
Okay. But what about that persisting error message:
zz.d
---
import core.stdc.stdio : fopen;
import std.stdio : readln, writeln;
import std.exception; // : enforce;
void main ()
{
auto f = enforce(fopen("data.txt", "r"));
auto line = readln(f);
enforce(line.length, "Expected a non-empty line.");
}
---
$ dmd zz
zz.d(8): Error: template std.stdio.readln cannot deduce function
from argument types !()(shared(_IO_FILE)*), candidates are:
/.../dmd2/linux/bin64/../../src/phobos/std/stdio.d(3921):
std.stdio.readln(S = string)(dchar terminator = '\x0a') if
(isSomeString!S)
/.../dmd2/linux/bin64/../../src/phobos/std/stdio.d(3955):
std.stdio.readln(C)(ref C[] buf, dchar terminator = '\x0a') if
(isSomeChar!C && is(Unqual!C == C) && !is(C == enum))
/.../dmd2/linux/bin64/../../src/phobos/std/stdio.d(3962):
std.stdio.readln(C, R)(ref C[] buf, R terminator) if
(isSomeChar!C && is(Unqual!C == C) && !is(C == enum) &&
isBidirectionalRange!R && is(typeof(terminator.front ==
(dchar).init)))
The example still does not compile.
