|
|
|
@ -2,15 +2,15 @@
|
|
|
|
|
// A common case for errors is a situation where we're expecting to
|
|
|
|
|
// have a value OR something has gone wrong. Take this example:
|
|
|
|
|
//
|
|
|
|
|
// var text: Text = getText('foo.txt');
|
|
|
|
|
// var text: Text = getText("foo.txt");
|
|
|
|
|
//
|
|
|
|
|
// What happens if getText() can't find 'foo.txt'? How do we express
|
|
|
|
|
// What happens if getText() can't find "foo.txt"? How do we express
|
|
|
|
|
// this in Zig?
|
|
|
|
|
//
|
|
|
|
|
// Zig lets us make what's called an "error union" which is a value
|
|
|
|
|
// which could either be a regular value OR an error from a set:
|
|
|
|
|
//
|
|
|
|
|
// var text: MyErrorSet!Text = getText('foo.txt');
|
|
|
|
|
// var text: MyErrorSet!Text = getText("foo.txt");
|
|
|
|
|
//
|
|
|
|
|
// For now, let's just see if we can try making an error union!
|
|
|
|
|
//
|
|
|
|
|