Re: How do I the temlate parameter name as string?
On Tuesday, 27 November 2018 at 02:00:44 UTC, PacMan wrote:
ParameterIdentifierTuple from std.traits did work fine for
regular functions but not for template functions:
Error: template instance
`std.traits.ParameterIdentifierTuple!(f)` does not match
template declaration `ParameterIdentifierTuple(func...) if
(func.length == 1 && isCallable!func)` (foo)
f is defined as:
void f(T)(T t, string p)
if(is(T == A) || is(T == B))
{
// ...
}
my goal is get "p" as string.
p.stringof
Re: How do I the temlate parameter name as string?
On Tue, 27 Nov 2018 02:00:44 +, PacMan wrote:
> f is defined as:
>
>> void f(T)(T t, string p)
>> if(is(T == A) || is(T == B))
>>{
>> // ...
>>}
>
> my goal is get "p" as string.
`f` is a template that generates functions. Before you instantiate that
template, the function doesn't exist, so there's no function to get
parameters from.
You can get the parameter names of any instantiation of that template,
such as:
assert(ParameterIdentifierTuple!(f!A)[1] == "p");
Re: How do I the temlate parameter name as string?
On Tuesday, 27 November 2018 at 02:00:44 UTC, PacMan wrote:
ParameterIdentifierTuple from std.traits did work fine for
regular functions but not for template functions:
Error: template instance
`std.traits.ParameterIdentifierTuple!(f)` does not match
template declaration `ParameterIdentifierTuple(func...) if
(func.length == 1 && isCallable!func)` (foo)
f is defined as:
void f(T)(T t, string p)
if(is(T == A) || is(T == B))
{
// ...
}
my goal is get "p" as string.
If I'm understanding right I need this quite frequently so I
wrote this:
template nameOf(alias nameType)
{
enum string nameOf = __traits(identifier, nameType);
}
unittest
{
immutable int name;
assert(nameOf!name == "name");
}
How do I the temlate parameter name as string?
ParameterIdentifierTuple from std.traits did work fine for
regular functions but not for template functions:
Error: template instance
`std.traits.ParameterIdentifierTuple!(f)` does not match
template declaration `ParameterIdentifierTuple(func...) if
(func.length == 1 && isCallable!func)` (foo)
f is defined as:
void f(T)(T t, string p)
if(is(T == A) || is(T == B))
{
// ...
}
my goal is get "p" as string.
