zig

values.zig (1255B) - Raw

---

 // Top-level declarations are order-independent:
 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("1 + 1 = {}\n", .{one_plus_one});
 
     // floats
     const seven_div_three: f32 = 7.0 / 3.0;
     print("7.0 / 3.0 = {}\n", .{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("\noptional 1\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,
     });
 }
 
 // exe=succeed