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elixir-lang / elixir-lang.github.com

Website for Elixir
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Update recursion.markdown #1576

Closed colmben closed 2 years ago

colmben commented 2 years ago

I'm assuming a typo here, it doesn't work in iex anyways?

josevalim commented 2 years ago

The current example should totally work. I just tried it on my IEx. Can you please show what have you tried and which error you get?

colmben commented 2 years ago

Hi Jose!

I was just just reading ahead on a chromebook and so used the online iex at https://try-elixir.herokuapp.com/ which fails on that line. I now see that it does indeed work on a locally installed iex, The syntax totally threw me I have to say, why would you capture a kernel function like that instead of just clearly showing two arguments adding together? It seems to be a case of brevity over clarity, unless that form is common in Elixir? In which case it might be worth mentioning what it is doing in the text? Note I wasn't the only one perplexed by the syntax, when you google "&+/2" the first (and only Elixir relevant) hit is https://stackoverflow.com/questions/39156130/what-is-2-in-elixir/39156167

josevalim commented 2 years ago

I see! Someone on reddit was also asking earlier this week what &+/2 means, so I sent a commit to introduce the concept earlier. Thank you for bringing it up!