The presence of rarely used functions is not an argument for the addition of further rarely used functions.
On Wednesday, July 24, 2019 at 1:05:59 PM UTC-4, Mário Guimarães wrote: > > It seems this function was proposed here > https://github.com/elixir-lang/elixir/pull/5917 > > and dropped because: > > > 1. put_new and put_new! pair behaves differently from !-paired > functions, I’m not sure if it’s good thing to break expectations in that > case. > 2. I don’t feel a huge need for put_new! - put_new itself is already > rather rare use case, this one would be even rarer. > > Regarding point 1) I can say that Map.replace!/update! also " behaves > differently from !-paired functions", yet they still exist > > Regarding point 2) well ... there many other functions many of us found > very infrequent or no use so far ¯\_(ツ)_/¯ > > My opinion is that it can be useful to make the code more bulletproof, > much like Map.replace!/update! do. > > Mário > > > > > quarta-feira, 24 de Julho de 2019 às 17:47:34 UTC+1, Mário Guimarães > escreveu: >> >> Hello, >> >> presently there is no function that throws an error in case we want to >> put a really new key in a map. >> >> The function Map.put_new only does nothing if the key is already there. >> >> The idea for Map.put_new! is to throw an error if the key is there. The >> use case is the developer who wants to be sure that the key is not there, >> as otherwise it means there is an error in the application code. As such, >> an exception should be raised. >> >> Is this a useful addition to Map? >> >> Thanks >> Mário >> > -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. To unsubscribe from this group and stop receiving emails from it, send an email to elixir-lang-core+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/0aa70608-1464-4c61-acb3-b38c1a6c4633%40googlegroups.com.
