Anonymous Struct Functions

main.zig

const std = @import("std");

pub fn foo(
    w: f32,
    context: anytype,
    callback: fn (@TypeOf(context), f32) void,
) void {
    callback(context, w + 23.0);
}

pub fn main() void {
    const name = "Joles";

    const bar = struct {
        const Self = @This();

        name: *const [5:0]u8,

        pub fn length(self: Self, p: f32) void {
            std.debug.print("Hello {s} {d}", .{ self.name, p });
        }
    }{ .name = name };

    foo(23.0, bar, @TypeOf(bar).length);
}