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Define unrolled_findonly #8

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Define unrolled_findonly #8

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2 changes: 1 addition & 1 deletion Project.toml
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
name = "UnrolledUtilities"
uuid = "0fe1646c-419e-43be-ac14-22321958931b"
authors = ["CliMA Contributors <[email protected]>"]
version = "0.1.2"
version = "0.1.3"

[compat]
julia = "1.10"
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8 changes: 8 additions & 0 deletions src/UnrolledUtilities.jl
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Expand Up @@ -11,6 +11,7 @@ export unrolled_any,
unrolled_in,
unrolled_unique,
unrolled_filter,
unrolled_findonly,
unrolled_split,
unrolled_flatten,
unrolled_flatmap,
Expand Down Expand Up @@ -104,6 +105,12 @@ struct NoInit end
ntuple(i -> itr[N + i], Val(length(itr) - N))
# When its second argument is a Val, ntuple is unrolled via Base.@ntuple.

function unrolled_findonly(f::F, values) where {F}
filtered_values = unrolled_filter(f, values)
return length(filtered_values) == 1 ? filtered_values[1] :
error("unrolled_findonly requires that exactly 1 value makes f true")
end

@static if hasfield(Method, :recursion_relation)
# Remove recursion limits for functions whose arguments are also functions.
for func in (
Expand All @@ -115,6 +122,7 @@ struct NoInit end
unrolled_reduce,
unrolled_mapreduce,
unrolled_filter,
unrolled_findonly,
unrolled_split,
unrolled_flatmap,
unrolled_applyat,
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