3 ms·
Patterns can be arbitrarily complex. If you have struct Foo { bar: Arc<String>, } Then it's the difference between today's if let Foo { bar } = v
by estebank 2y ago
Patterns can be arbitrarily complex. If you have
struct Foo {
bar: Arc<String>,
}
Then it's the difference between today's
if let Foo { bar } = val {
if &*bar == "hi" {
}
}
And the potential future
if let Foo { bar: "hi" } = val {}
The more complex the pattern, the bigger the conciseness win and levels of nesting you can remove. This comes up more often for me with `Box`, in the context of AST nodes, but because I use nightly I can use `box` patterns, which is the same feature but only for `Box` and that will never be stabilized.