OK, I found that: julia> try isempty(t) end false
julia> try isempty([]) end true but this is uggly segunda-feira, 19 de Janeiro de 2015 às 02:42:09 UTC, J Luis escreveu: > > > How do I test if a variable has something or if it's empty? > What I need is something that behaves like the Matalb's isempty() > > Julia isempty() is no good because it only tests collections. e.g > > julia> type foo a end > > julia> t=foo(1) > foo(1) > > julia> isempty(t) > ERROR: `start` has no method matching start(::foo) > > isnan() is no good either for a similar reason > > julia> isnan(t) > ERROR: `isnan` has no method matching isnan(::foo) > > It's a petty that these two don't behave like in Matlab > >
