Juliaの|>, ccall

|>は関数

code:jl

:(1 |> sin) == :(|>(1, sin) # true

ちなみにccallは関数じゃない

code:jl

julia> @code_lowered ccall(:getpid, Cint, ())

ERROR: UndefVarError: ccall not defined

Stacktrace:

1 top-level scope

@ /usr/share/julia/stdlib/v1.8/InteractiveUtils/src/macros.jl:231

julia> ccall(:getpid, Cint, ())

6161