Type Function TagPayloadByName [src]

Deprecated: Use @FieldType(U, tag_name)

Prototype

pub fn TagPayloadByName(comptime U: type, comptime tag_name: []const u8) type

Parameters

U: typetag_name: []const u8

Source

  pub fn TagPayloadByName(comptime U: type, comptime tag_name: []const u8) type {
    const info = @typeInfo(U).@"union";

    inline for (info.fields) |field_info| {
        if (comptime mem.eql(u8, field_info.name, tag_name))
            return field_info.type;
    }

    @compileError("no field '" ++ tag_name ++ "' in union '" ++ @typeName(U) ++ "'");
}  