One option is to explicitly import the DataArrays package. This should probably be filed as a bug against the Reexport.jl package used by DataFrames: https://github.com/simonster/Reexport.jl/issues
On Wed, May 14, 2014 at 8:23 AM, David Gonzales <dvdgonzale...@gmail.com>wrote: > the dump from the REPL was a bit buggy, here is a fixup: > > julia> TestUsing.testisna1() > ERROR: isna not defined > in testisna1 at TestUsing.jl:6 > > julia> TestUsing.testisna2() > ERROR: DataArrays not defined > in testisna2 at TestUsing.jl:10 > > julia> TestUsing.testisna3() > false > > > > > > On Wednesday, May 14, 2014 3:14:12 PM UTC+3, David Gonzales wrote: >> >> When converting my script into a Module, some problems cropped up >> accessing the isna(...) function from DataArrays. >> >> I managed to reduce the problem into a namespace resolution problem: >> When using a Module inside a Module definition, the recursivity of name >> search is not working. >> In the example below: isna(...) from DataArrays is not available to >> TestUsing after it issued a "using DataFrames". >> >> The question is: Is this the behaviour we would/should want? >> >> This is a simple demonstration of the issue: >> >> module TestUsing >> >> using DataFrames >> >> function testisna1() >> isna(100) >> end >> function testisna2() >> DataArrays.isna(100) >> end >> function testisna3() >> DataFrames.DataArrays.isna(100) >> end >> end # Module TestUsing >> >> and the interaction from the REPL: >> >> _ _ _(_)_ | A fresh approach to technical computing >> (_) | (_) (_) | Documentation: http://docs.julialang.org >> _ _ _| |_ __ _ | Type "help()" to list help topics >> | | | | | | |/ _' | | >> | | |_| | | | (_| | | Version 0.3.0-prerelease+2918 (2014-05-06 22:29 >> UTC) >> _/ |\__'_|_|_|\__'_| | Commit 104568c (7 days old master) >> |__/ | i686-linux-gnu >> >> julia> >> julia> using TestUsing >> Warning: New definition >> isequal(NAtype,Any) at /home/dan/.julia/v0.3/ >> DataArrays/src/operators.jl:556 >> is ambiguous with: >> isequal(Any,WeakRef) at base.jl:114. >> To fix, define >> isequal(NAtype,WeakRef) >> before the new definition. >> Warning: New definition >> isequal(Any,NAtype) at /home/dan/.julia/v0.3/ >> DataArrays/src/operators.jl:557 >> is ambiguous with: >> isequal(WeakRef,Any) at base.jl:113. >> To fix, define >> isequal(WeakRef,NAtype) >> before the new definition. >> Warning: ignoring conflicting import of StatsBase.range into DataFrames >> >> julia> TestUsing.testisna() >> ERROR: testisna not defined >> >> julia> TestUsing.testisna2() >> ERROR: DataArrays not defined >> in testisna2 at /home/dan/projects/julia-housing/TestUsing.jl:10 >> >> julia> TestUsing.testisna3() >> false >> >> >>
