Collect usings and avoid using packages

src/IntervalMatrices.jl

@@ -4,15 +4,21 @@ module IntervalMatrices
 using LinearAlgebra
 using LinearAlgebra: checksquare
 
-import Random
 using Random: AbstractRNG, GLOBAL_RNG, seed!
+import Random: rand
+
+import Base: copy, get,
+             +, -, *, /, \,
+             size, IndexStyle, getindex, setindex!,
+             similar, ∈, ⊆, ∩, ∪, real, imag
 
 using Reexport
 @reexport using IntervalArithmetic
+import IntervalArithmetic: inf, sup, mid, diam, radius, hull
 @static if VERSION >= v"1.9"
     vIA = pkgversion(IntervalArithmetic)
 else
-    using PkgVersion
+    import PkgVersion
     vIA = PkgVersion.Version(IntervalArithmetic)
 end
 if vIA >= v"0.21"

src/matrix.jl

@@ -1,7 +1,3 @@
-import Base: similar, ∈, ⊆, ∩, ∪, real, imag
-import Random: rand
-import IntervalArithmetic: inf, sup, mid, diam, radius, hull
-
 """
     AbstractIntervalMatrix{IT} <: AbstractMatrix{IT}
 
@@ -71,8 +67,6 @@ struct IntervalMatrix{T,IT,MT<:AbstractMatrix{IT}} <: AbstractIntervalMatrix{IT}
     mat::MT
 end
 
-import Base: size, IndexStyle, getindex, setindex!, copy
-
 IndexStyle(::Type{<:IntervalMatrix}) = IndexLinear()
 size(M::IntervalMatrix) = size(M.mat)
 getindex(M::IntervalMatrix, i::Int) = getindex(M.mat, i)

src/operations/arithmetic.jl

@@ -1,5 +1,3 @@
-import Base: +, -, *, /, \
-
 # =========================
 # Addition operations
 # =========================

src/operations/power.jl

@@ -1,5 +1,3 @@
-import Base: copy, get
-
 """
     IntervalMatrixPower{T}