Params

Represents a set of flags built from an enum intended to be used at compile-time for configuring the behaviour of templates, mixins, or other compile-time features.

Credit to Ethan Watson and his wonderful DConf 2019 talk for this idea.

struct Params (

) if (

is(T == enum)

) {

import std.format : format;;

static Self all();

this(inout(T)[] flags);

this(Self other);

bool opBinary(T rhs);

bool opBinary(Self rhs);

Self opBinary(T rhs);

Self opBinary(Self rhs);

bool opBinaryRight(T lhs);

Self opBinaryRight(T lhs);

bool opBinaryRight(T lhs);

}

Constructors

this this(inout(T)[] flags): Constructs a new parameter set from the specified overrides.
this this(Self other): Copy constructor.

Members

Functions

opBinary bool opBinary(T rhs): Undocumented in source. Be warned that the author may not have intended to support it.
opBinary bool opBinary(Self rhs): Undocumented in source. Be warned that the author may not have intended to support it.
opBinary Self opBinary(T rhs): Undocumented in source. Be warned that the author may not have intended to support it.
opBinary Self opBinary(Self rhs): Undocumented in source. Be warned that the author may not have intended to support it.
opBinaryRight bool opBinaryRight(T lhs): Undocumented in source. Be warned that the author may not have intended to support it.
opBinaryRight Self opBinaryRight(T lhs): Undocumented in source. Be warned that the author may not have intended to support it.
opBinaryRight bool opBinaryRight(T lhs): Undocumented in source. Be warned that the author may not have intended to support it.

Static functions

all Self all(): Constructs a new parameter set from all possible values.

Examples

enum MyConfig : string
{
    someOption = "do something cool, like a barrel roll",
    lazyProcessing = "be as lazy as possible"
}

alias MyParams = Params!MyConfig;

struct SomeStruct( MyParams params = MyParams.init )
{
    static if( params.someOption )
    {
        // do something cool...
    }

    static if( params.lazyProcessing )
    {
        // ...
    }
}

Params

Constructors

Members

Functions

Static functions

Examples

See Also

Meta

Source

Authors

Copyright

License