TIL Clojure has #_ which discards the next expression: https://betweentwoparens.com/rich-comment-blocks
It's handy for commenting things out written debugging.
miniblog.
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I've been using "Expected Int, but got String" for my type error messages, but I've been wondering if I could do better.
"Expected Int here, but this value has type String" or "This expression requires Int, but the value is String".
Do you have a favourite?
TIL Rust has an ambiguity `if Foo {}` -- is `Foo` a value of type bool, or a struct?
Rust solves this by defining a grammar production 'any expression except struct literals' and using it in this position.
Are there any languages that have both pattern matching and statement oriented syntax?
In principle these are orthogonal, but I'm struggling to think of a language with pattern matching that isn't expression oriented.