Function alt [src]

Helper for calling alternate format methods besides one named "format".

Prototype

 pub fn alt( context: anytype, comptime func_name: @TypeOf(.enum_literal), ) Alt(@TypeOf(context), @field(@TypeOf(context), @tagName(func_name)))

Parameters

func_name: @TypeOf(.enum_literal)

Example

 test alt {
    const Example = struct {
        number: u8,

        pub fn other(ex: @This(), w: *Writer) Writer.Error!void {
            try w.writeByte(ex.number);
        }
    };
    const ex: Example = .{ .number = 'a' };
    try expectFmt("a", "{f}", .{alt(ex, .other)});
}

Source

  pub fn alt(
    context: anytype,
    comptime func_name: @TypeOf(.enum_literal),
) Alt(@TypeOf(context), @field(@TypeOf(context), @tagName(func_name))) {
    return .{ .data = context };
}  