ziglings/exercises/022_errors2.zig

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//
// A common case for errors is a situation where we're expecting to
// have a value OR something has gone wrong. Take this example:
//
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// var text: Text = getText("foo.txt");
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//
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// What happens if getText() can't find "foo.txt"? How do we express
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// this in Zig?
//
// Zig lets us make what's called an "error union" which is a value
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// which could either be a regular value OR an error from a set:
//
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// var text: MyErrorSet!Text = getText("foo.txt");
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//
// For now, let's just see if we can try making an error union!
//
const std = @import("std");
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const MyNumberError = error{TooSmall};
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pub fn main() void {
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var my_number: MyNumberError!u8 = 5;
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// Looks like my_number will need to either store a number OR
// an error. Can you set the type correctly above?
my_number = MyNumberError.TooSmall;
std.debug.print("I compiled!\n", .{});
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}