For reference, there has been a previous discussion about then_if: https://groups.google.com/g/elixir-lang-core/c/uM_M-DWh42A/m/6pNKZcLyAQAJ?pli=1
Le ven. 6 déc. 2024 à 23:59, José Valim <jose.va...@gmail.com> a écrit : > Hi Juan! > > My initial gut feeling is that this approach does not scale. What if you > want to delete a key conditionally? Should we have delete_if? > > It feels a more general approach would be to introduce `then_if`: > > then_if(subject, condition?, function) > > Or similar. :) > > *José Valimhttps://dashbit.co/ <https://dashbit.co/>* > > > On Fri, Dec 6, 2024 at 3:27 PM Juan Manuel Azambuja <j...@mimiquate.com> > wrote: > >> Hello, >> >> After working with Elixir for some time I have found myself repeating >> some patterns when dealing with maps. >> >> One pattern I see repeated constantly in different apps developed by >> myself or others is adding values to a map conditionally or returning the >> map unchanged. This comes in different flavors: >> >> [image: Screenshot 2024-12-06 at 11.13.23 AM.png] >> or >> [image: Screenshot 2024-12-06 at 11.14.32 AM.png] >> >> When this pattern gets used enough in an app, it's normal to see it >> abstracted in a MapUtils module that updates the map conditionally if a >> condition is met or returns the map unchanged otherwise. >> >> My proposal is to include Map.put_if/4 which would abstract the condition >> check and return the map unchanged if the condition is not met: >> >> [image: Screenshot 2024-12-06 at 11.17.21 AM.png] >> >> Enhancing the API by doing this will result in less code and more >> readable solutions. >> >> Thanks for reading! >> >> -- >> 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 visit >> https://groups.google.com/d/msgid/elixir-lang-core/ed7da716-b9f5-4f64-a77d-d32696326b9en%40googlegroups.com >> <https://groups.google.com/d/msgid/elixir-lang-core/ed7da716-b9f5-4f64-a77d-d32696326b9en%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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 visit > https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4%2BLFJvKvdZX%3DnZEJj77sjmkXNm19KQz_vJr%2BAmKrecXPQ%40mail.gmail.com > <https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4%2BLFJvKvdZX%3DnZEJj77sjmkXNm19KQz_vJr%2BAmKrecXPQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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 visit https://groups.google.com/d/msgid/elixir-lang-core/CANnyohbeNiiDoPYorJpriwyx5w-iSkvVMh2wb-JY8q_16hsTag%40mail.gmail.com.
