add unary lift, originally contributed by the magnanimous @ericphanson (

#17)
beacon-biosignals · Jul 27, 2021 · 0008d52 · 0008d52 · jrevels · Jul 27, 2021
1 parent 8f7e31f
commit 0008d52
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diff --git a/Project.toml b/Project.toml
@@ -1,7 +1,7 @@
 name = "Legolas"
 uuid = "741b9549-f6ed-4911-9fbf-4a1c0c97f0cd"
 authors = ["Beacon Biosignals, Inc."]
-version = "0.2.2"
+version = "0.2.3"
 
 [deps]
 Arrow = "69666777-d1a9-59fb-9406-91d4454c9d45"

diff --git a/src/Legolas.jl b/src/Legolas.jl
@@ -14,6 +14,13 @@ originally constructed.
 lift(::Any, ::Union{Nothing,Missing}) = missing
 lift(f, x) = f(x)
 
+"""
+    lift(f)
+
+Returns a curried function, `x -> lift(f,x)`
+"""
+lift(f) = Base.Fix1(lift, f)
+
 const LEGOLAS_SCHEMA_QUALIFIED_METADATA_KEY = "legolas_schema_qualified"
 
 include("rows.jl")

diff --git a/test/runtests.jl b/test/runtests.jl
@@ -8,6 +8,9 @@ include(joinpath(dirname(@__DIR__), "examples", "tour.jl"))
     @test ismissing(Legolas.lift(sin, nothing))
     @test ismissing(Legolas.lift(sin, missing))
     @test Legolas.lift(sin, 1.0) == sin(1.0)
+    @test ismissing(Legolas.lift(sin)(nothing))
+    @test ismissing(Legolas.lift(sin)(missing))
+    @test Legolas.lift(sin)(1.0) == sin(1.0)
 end
 
 @testset "Legolas.location" begin