Chaining comparisons

[Rudi79]

I don't know whether this is the intended behavior, but it puzzled me that LazyArrays breaks transitivity. See:

using LazyArrays
b = rand(10)
a = ApplyArray(vcat, b)
a .== a  # works
a .== a .== a  # does not work

This bit me while using CSV together with DataFrames.
For xref see:
JuliaData/CSV.jl#536
resp.
https://discourse.julialang.org/t/csv-dataframes-problems-with-threads/31318

[dlfivefifty]

Please can you post the output? Makes it easier to tell what’s going on

[Rudi79]

Sure. Thanks for the quick reply. Here is the output:

MethodError: no method matching LazyArrays.LazyArrayStyle()
Closest candidates are:
  LazyArrays.LazyArrayStyle(!Matched::Val{N}) where N at C:\Users\xxx\.julia\packages\LazyArrays\14GOk\src\lazybroadcasting.jl:2
in top-level scope at spielwiese.jl:452
in broadcasted at base\broadcast.jl:1237
in combine_styles at base\broadcast.jl:411
in combine_styles at base\broadcast.jl:410
in Base.Broadcast.BroadcastStyle at base\broadcast.jl:211