`tap` is one of my favorite #Elixir functions. I implemented it myself in my #Uptight functools, but then a colleague of mine told me that it's already in #Kernel.
Documentation: https://hexdocs.pm/elixir/1.12.3/Kernel.html#tap/2
Code: https://github.com/elixir-lang/elixir/blob/v1.12.3/lib/elixir/lib/kernel.ex#L1160
@jonn nice, I honestly never knew that was in the kernel.
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@entropealabs yeah, it's super-useful if you want to sprinkle a side-effect into a pipe.
