• Andrew Godfrey (19/19) Aug 28 2014 The first parameter of formattedRead is a non-const ref. Is there
• Vladimir Panteleev (5/8) Aug 28 2014 formattedRead takes an input range as the first parameter, and
• Andrew Godfrey (3/11) Aug 28 2014 Ah, thanks! I should have posted this in D.learn, sorry.
• Dicebot (3/3) Aug 28 2014 const(char)[] tmp = date;

"Andrew Godfrey" <X y.com> writes:

The first parameter of formattedRead is a non-const ref. Is there
a good reason for this?

e.g. the below doesn't compile, but if I remove the 'const' from 
Foo.normalize, then it succeeds:

unittest {
     import std.datetime;
     struct Foo {
         string date;
         DateTime normalize() const {
             import std.format, std.exception;
             int month, day, year;
             enforce(3 == formattedRead(date, "%d/%d/%d", &month, 
&day, &year));
             return DateTime(year, month, day, 0, 0, 0);
         }
     }

     Foo foo = Foo("12/2/2014");
     assert(foo.normalize == DateTime(2014, 12, 2, 0, 0, 0));
}

"Vladimir Panteleev" <vladimir thecybershadow.net> writes:

On Friday, 29 August 2014 at 04:21:54 UTC, Andrew Godfrey wrote:
 The first parameter of formattedRead is a non-const ref. Is 
 there
 a good reason for this?

formattedRead takes an input range as the first parameter, and 
consumes it as it is going through the format string. On exit, 
the range will contain the remainder of the initial range after 
all fields have been read and parsed.

"Andrew Godfrey" <X y.com> writes:

On Friday, 29 August 2014 at 04:29:31 UTC, Vladimir Panteleev 
wrote:
 On Friday, 29 August 2014 at 04:21:54 UTC, Andrew Godfrey wrote:
 The first parameter of formattedRead is a non-const ref. Is 
 there
 a good reason for this?

 formattedRead takes an input range as the first parameter, and 
 consumes it as it is going through the format string. On exit, 
 the range will contain the remainder of the initial range after 
 all fields have been read and parsed.

Ah, thanks! I should have posted this in D.learn, sorry.

"Dicebot" <public dicebot.lv> writes:

const(char)[] tmp = date;
enforce(3 == formattedRead(tmp, "%d/%d/%d", &month,
&day, &year));