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Alias std.meta.Instantiate
Instantiates the given template with the given parameters.
alias Instantiate(alias Template, Params...)
= Template!Params;
Used to work around syntactic limitations of D with regard to instantiating
a template from an alias sequence (e.g. T[0]!(...)
is not valid) or a
template returning another template (e.g. Foo!(Bar)!(Baz)
is not allowed).
Parameters
Name | Description |
---|---|
Template | The template to instantiate. |
Params | The parameters with which to instantiate the template. |
Returns
The instantiated template.
Example
// ApplyRight combined with Instantiate can be used to apply various
// templates to the same parameters.
import std .string : leftJustify, center, rightJustify;
alias functions = staticMap!(ApplyRight!(Instantiate, string),
leftJustify, center, rightJustify);
string result = "";
static foreach (f; functions)
{
{
auto x = &f; // not a template, but a function instantiation
result ~= x("hello", 7);
result ~= ";";
}
}
writeln(result); // "hello ; hello ; hello;"
Authors
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.