Javascript... Yes, Javascript is a barrel of pure quirk. Just pick variable scope. As if it wasn't bad enough that hoisting exists, the bizarre way scopes work allows you to write some truly awe-inspiring hackery, like this Fibonacci function:
function fib(n) { if (n) { a = 1; b = 0; c = n + 1; } if (c === 1) { return a + b; } c = c - 1; let d = a + b; b = a; a = d; return fib(); }
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Javascript... Yes, Javascript is a barrel of pure quirk. Just pick variable scope. As if it wasn't bad enough that hoisting exists, the bizarre way scopes work allows you to write some truly awe-inspiring hackery, like this Fibonacci function: