Can we revisit in which scenarios an explicit boolean conversion is necessary?
On Wed, Dec 23, 2020 at 1:21 AM Moxley Stratton <moxley.strat...@gmail.com> wrote: > I would like revisit this issue. > > The issue was last discussed 5 years ago. Much has changed in that time. > The given solution was to use a double-negative (!!) to convert a given > value to a pure boolean. > > Here are the problems with the suggested solution: > 1. I believe this solution is a hack that is not intuitive to beginners. > It's rarely seen by mid and senior developers, meaning they have to pause > to interpret what !! means. > 2. A double negative can't be part of an Elixir pipeline. > 3. The Credo package warns about double negatives: "Double boolean > negation found". Linters in other languages have a similar warning. Other > languages have a built-in function (JavaScript has Boolean()) to convert to > boolean. > 4. The alternative to double-negative is verbose: "if expr, do: true, > else: false", or the less readable "expr && true || false" > > I would be happy to submit a PR to add Kernel.to_boolean/1. > > On Sunday, November 1, 2015 at 5:48:28 AM UTC-8 José Valim wrote: > >> Not necessarily , but the ones in Kernel are. :) >> >> -- >> >> >> *José Valim* >> www.plataformatec.com.br >> Skype: jv.ptec >> Founder and Director of R&D >> > -- > 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/45dc9a7b-1657-4d02-933b-fe8fe182c2bcn%40googlegroups.com > <https://groups.google.com/d/msgid/elixir-lang-core/45dc9a7b-1657-4d02-933b-fe8fe182c2bcn%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 on the web visit https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4%2B7iTRj%3Do62adGM%3DspKxnscAT1QoVC-0uqLDS_YPcDGAA%40mail.gmail.com.
