I don't really get it.. In one of the last example's he writes:
` if (node.last_child(s) is Ok(last_child))`
Is the part between the () not ultimately the same as a boolean expression? Like he wrote his own implementation of if/else syntax?
Also in the beginning he says: "An if with an else can produce a value", but isn't this just 'syntactic sugar'? I think the code that actually runs is the same as if you'd write if (value x = some_value) {value = something} else {value = something_else} ?
` if (node.last_child(s) is Ok(last_child))`
Is the part between the () not ultimately the same as a boolean expression? Like he wrote his own implementation of if/else syntax?
Also in the beginning he says: "An if with an else can produce a value", but isn't this just 'syntactic sugar'? I think the code that actually runs is the same as if you'd write if (value x = some_value) {value = something} else {value = something_else} ?