identity(v) | Identity function, return value v |
const(k, _) | Return single arg function that always returns k |
(-> x) | Const; return single arg function that always returns k |
compose(f, g, x) | Apply function f to g(x) |
apply(f, xs) | Apply function f to arguments in list xs |
flip(f, x, y) | Flip arguments of function f, flip(f)(x, y) == f(y, x) |
complement(p?) | Invert truth value of predicate function |
curry(f, x, y) | Turn f((x, y)) into f(x, y) |
uncurry(f, l) | Turn f(x, y) into f([x, y]). Semantically: (a → b → c) → (a, b) → c |
cond | Multi-way conditional: evaluate each cond => result clause in turn, returning the first matching result, or the last element as a default |
(l => r) | Build a cond clause: condition c paired with result r. Use inside cond([...]) lists |
(l ⇒ r) | Unicode alias for c => r |
juxt(f, g, x) | Apply both f and g to x, returning pair (f(x), g(x)) |