John
4747b65414
Since the type checker sucks less now, we can think about maybe adding some features to the language. ...At some point I'd like to have the type checker clean up the index map.
22 lines
406 B
Common Lisp
22 lines
406 B
Common Lisp
//! The optional type, representing the presence or absence of a thing.
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pub enum Option<T> {
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Some(T),
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None,
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}
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impl Option {
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pub fn is_some(self: &Self) -> bool {
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match self {
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Some(_) => true,
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None => false,
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}
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}
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pub fn is_none(self: &Self) -> bool {
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match self {
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Some(_) => false,
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None => true,
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}
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}
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}
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