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Merge pull request #7158 from sternenseemann/foldl-strict-accumulation-value

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Valentin Gagarin 2023-02-19 23:54:14 +01:00 • committed by GitHub
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6 changed files with 25 additions and 3 deletions
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6
src/libexpr/primops.cc
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@ -3032,9 +3032,9 @@ static RegisterPrimOp primop_foldlStrict({
.doc = R"(
Reduce a list by applying a binary operator, from left to right,
e.g. `foldl' op nul [x0 x1 x2 ...] = op (op (op nul x0) x1) x2)
...`. The operator is applied strictly, i.e., its arguments are
evaluated first. For example, `foldl' (x: y: x + y) 0 [1 2 3]`
evaluates to 6.
...`. For example, `foldl' (x: y: x + y) 0 [1 2 3]` evaluates to 6.
The return value of each application of `op` is evaluated immediately,
even for intermediate values.
)",
.fun = prim_foldlStrict,
});