digitalmars.D.learn - How do I the temlate parameter name as string?
- PacMan (4/13) Nov 26 2018 f is defined as:
- Soulsbane (12/25) Nov 26 2018 If I'm understanding right I need this quite frequently so I
- Neia Neutuladh (7/16) Nov 26 2018 `f` is a template that generates functions. Before you instantiate that
- bauss (2/15) Nov 27 2018 p.stringof
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.
Nov 26 2018
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: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"); }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.
Nov 26 2018
On Tue, 27 Nov 2018 02:00:44 +0000, PacMan wrote:f is defined as:`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");void f(T)(T t, string p) if(is(T == A) || is(T == B)) { // ... }my goal is get "p" as string.
Nov 26 2018
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:p.stringofError: 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.
Nov 27 2018