I am somewhat surprised about the great selection of pattern matching libraries in Julia. The fact that there are so many suggests that people find pattern matching in Julia useful.
I feel like I am missing something because I don’t (except when I work with ASTs, for which MacroTools.jl is perfect). I am not opposed to the idea in general: eg in Haskell, I recognize that it is an indispensable idiom.
It’s just that in Julia, I find that parametric multiple dispatch (with the common idioms) is powerful enough for my needs. Whenever I need something resembling pattern matching, I factor out the relevant code to a small kernel function.
This is not meant to be a criticism of programming styles that use pattern matching, I am just wondering what I am missing.