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Function std.format.spec.singleSpec
Helper function that returns a FormatSpec
for a single format specifier.
Parameters
Name | Description |
---|---|
fmt | a format string containing a single format specifier |
Char | character type of fmt |
Returns
A FormatSpec
with the format specifier parsed.
Throws
A FormatException when the format string contains no format specifier or more than a single format specifier or when the format specifier is malformed.
Example
import std .array : appender;
import std .format .write : formatValue;
auto spec = singleSpec("%10.3e");
auto writer = appender!string();
writer .formatValue(42.0, spec);
writeln(writer .data); // " 4.200e+01"
Authors
Walter Bright, Andrei Alexandrescu, and Kenji Hara
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.