digitalmars.D.learn - How to get BaseEnumType?
- drug (9/9) Aug 31 2015 Hello
- wobbles (20/30) Aug 31 2015 In std.traits there is the required isX funcitons.
- wobbles (3/24) Aug 31 2015 My copy paste got the better of me. The print messages in the
- drug (2/21) Aug 31 2015 Thank you. But is there a way to check against not predefined type?
- Enamex (4/14) Aug 31 2015 Use
- drug (2/17) Aug 31 2015 Yes, it works, thank you!
Hello
I need to get the type to which I can cast the enum for using with
foreign library. For example:
```
enum Foo { A = "a", B = "b", }
enum Bar { A = 123, B = 432, }
static assert(is(BaseEnumType!Foo == string));
static assert(is(BaseEnumType!Bar == int));
I guess there is simple answer somewhere but I failed to find it yet.
Aug 31 2015
On Monday, 31 August 2015 at 07:55:53 UTC, drug wrote:
Hello
I need to get the type to which I can cast the enum for using
with foreign library. For example:
```
enum Foo { A = "a", B = "b", }
enum Bar { A = 123, B = 432, }
static assert(is(BaseEnumType!Foo == string));
static assert(is(BaseEnumType!Bar == int));
I guess there is simple answer somewhere but I failed to find
it yet.
In std.traits there is the required isX funcitons.
import std.stdio;
import std.traits;
void main(){
static if(isSomeString!Foo){
writefln("String: %s", Foo.A);
}
static if(isScalarType!Bar){
writefln("Integer: %s", Bar.A);
}
static if(isSomeString!Bar){
writefln("String: %s", Foo.A); // wont print
}
static if(isScalarType!Foo){
writefln("Integer: %s", Bar.A); // wont print
}
}
enum Foo { A="a", B = "b" }
enum Bar { A=1, B=2 }
Aug 31 2015
"wobbles" <grogan.colin gmail.com>
On Monday, 31 August 2015 at 08:10:35 UTC, wobbles wrote:
On Monday, 31 August 2015 at 07:55:53 UTC, drug wrote:
import std.stdio;
import std.traits;
void main(){
static if(isSomeString!Foo){
writefln("String: %s", Foo.A);
}
static if(isScalarType!Bar){
writefln("Integer: %s", Bar.A);
}
static if(isSomeString!Bar){
writefln("String: %s", Foo.A); // wont print //
Bar.A
}
static if(isScalarType!Foo){
writefln("Integer: %s", Bar.A); // wont print
// Foo.A
}
}
enum Foo { A="a", B = "b" }
enum Bar { A=1, B=2 }
My copy paste got the better of me. The print messages in the
last two static ifs shoudl be Bar.A and Foo.A respectively :)
Aug 31 2015
On 31.08.2015 11:10, wobbles wrote:
In std.traits there is the required isX funcitons.
import std.stdio;
import std.traits;
void main(){
static if(isSomeString!Foo){
writefln("String: %s", Foo.A);
}
static if(isScalarType!Bar){
writefln("Integer: %s", Bar.A);
}
static if(isSomeString!Bar){
writefln("String: %s", Foo.A); // wont print
}
static if(isScalarType!Foo){
writefln("Integer: %s", Bar.A); // wont print
}
}
enum Foo { A="a", B = "b" }
enum Bar { A=1, B=2 }
Thank you. But is there a way to check against not predefined type?
Aug 31 2015
On Monday, 31 August 2015 at 07:55:53 UTC, drug wrote:
Hello
I need to get the type to which I can cast the enum for using
with foreign library. For example:
```
enum Foo { A = "a", B = "b", }
enum Bar { A = 123, B = 432, }
static assert(is(BaseEnumType!Foo == string));
static assert(is(BaseEnumType!Bar == int));
I guess there is simple answer somewhere but I failed to find
it yet.
Use
is(std.traits.OriginalType!Foo == string)
maybe?
Aug 31 2015
On 31.08.2015 11:12, Enamex wrote:On Monday, 31 August 2015 at 07:55:53 UTC, drug wrote:Yes, it works, thank you!Hello I need to get the type to which I can cast the enum for using with foreign library. For example: ``` enum Foo { A = "a", B = "b", } enum Bar { A = 123, B = 432, } static assert(is(BaseEnumType!Foo == string)); static assert(is(BaseEnumType!Bar == int)); I guess there is simple answer somewhere but I failed to find it yet.Use is(std.traits.OriginalType!Foo == string) maybe?
Aug 31 2015