lessThan

builtins.lessThan

Primop

Docs pulled from | This Revision | 3 days ago

Nix manual

Takes 2 arguments

e1, e2

Return true if the value e1 is less than the value e2, and false otherwise. Evaluation aborts if either e1 or e2 does not evaluate to a number, string or path. Furthermore, it aborts if e2 does not match e1's type according to the aforementioned classification of number, string or path.

Noogle detected

Aliases

lib.lessThan
lib.trivial.lessThan

Detected Type

lessThan :: Number -> Number -> Bool

Implementation

This function is implemented in c++ and is part of the native nix runtime.

src/libexpr/primops.cc:4652

static void prim_lessThan(EvalState & state, const PosIdx pos, Value ** args, Value & v)
{
    state.forceValue(*args[0], pos);
    state.forceValue(*args[1], pos);
    // pos is exact here, no need for a message.
    CompareValues comp(state, noPos, "");
    v.mkBool(comp(args[0], args[1]));
}