values.zig

const print = std.debug.print;
const std = @import("std");
const os = std.os;
const assert = std.debug.assert;
pub fn main() void {
    //integers
    const one_plus_one: i32 = 1 + 1;
    print("{}", .{one_plus_one});
    //floats
    const seven_div_three: f32 = 7.0 / 3.0;
    print("{}", .{seven_div_three});
    //boolean
    // print("{}\n{}\n{}\n", .{ true and false, true or false!true });
    //optional
    var optional_value: ?[]const u8 = null;
    assert(optional_value == null);
    print("\nooptional I\ntype {}\nvalue:{?s}\n", .{ @TypeOf(optional_value), optional_value });
    optional_value = "hi";
    assert(optional_value != null);

    print("\noptional 2\ntype: {}\nvalue: {?s}\n", .{
        @TypeOf(optional_value), optional_value,
    });

    // error union
    var number_or_error: anyerror!i32 = error.ArgNotFound;

    print("\nerror union 1\ntype: {}\nvalue: {!}\n", .{
        @TypeOf(number_or_error),
        number_or_error,
    });

    number_or_error = 1234;

    print("\nerror union 2\ntype: {}\nvalue: {!}\n", .{
        @TypeOf(number_or_error), number_or_error,
    });
}