change function type to ::F where F <: Function

Author: jbytecode

CHANGELOG.md

@@ -1,6 +1,7 @@
 # v0.11.1 (Upcoming Release)
-- Concrete types of X and y changed to AbstractMatrix{Float64} and AbstractVector{Float64}
 
+- Concrete types of X and y changed to AbstractMatrix{Float64} and AbstractVector{Float64}
+- Change function signatures from ::Function to ::F where {F <: Function}
 
 # v0.11.0
 

src/basis.jl

@@ -273,11 +273,11 @@ end
     Apply function f to each columns of data.
 
 # Arguments
-- `f::Function`: A function that takes a one dimensional array as argument.
+- `f <: Function`: A function that takes a one dimensional array as argument.
 - `data::DataFrame`: A DataFrame object.
 
 """
-function applyColumns(f::Function, data::DataFrame)
+function applyColumns(f::F, data::DataFrame) where {F <: Function}
     return [f(col) for col in eachcol(data)]
 end
 
@@ -289,10 +289,10 @@ end
     Apply function f to each columns of data.
 
 # Arguments
-- `f::Function`: A function that takes a one dimensional array as argument.
+- `f <: Function`: A function that takes a one dimensional array as argument.
 - `data::Matrix`: A Matrix object.
 """
-function applyColumns(f::Function, data::AbstractMatrix{Float64})
+function applyColumns(f::F, data::AbstractMatrix{Float64}) where {F <: Function}
     return [f(col) for col in eachcol(data)]
 end