The closest thing we have is `Code.ensure_loaded/1`. If you don't check that the module exists, you're basically just checking that the input is an atom. And if you use ensure_loaded, you'll have a predicate function with side effects. You'd also break the expectation of guard safety with the `is_` prefix.
Would your `is_module/1` have different behaviour than `is_atom/1`? Would it be true only of atoms of the form `:"Elixir.SomeModule"`? I'm not sure it should, since `defmodule :random_atom` is valid. Which is a long way of saying, I think you should use `is_atom`. Perhaps with a line comment `# for modules`. mån 16 okt. 2017 kl 20:02 skrev Devon Estes <[email protected]>: > We just encountered something that seemed kind of odd, so I wanted to pass > it by the list to see if it could be a possible feature. > > In Benchee we want to accept either a module or a function as an argument > to a function. We'll have different behavior depending on the type there > (since we're expecting any module passed in to implement a certain > behaviour). However, there's no check for `is_module`. We were thinking of > using `is_atom` (see here: > https://github.com/PragTob/benchee/pull/148/files#diff-e8ef07ff6be58cfaaaf6f03420fc53e7R75), > but that seems sort of confusing to me. I know technically modules are > atoms, but would it be possible to have an `is_module` function that can be > used in guard clauses and elsewhere that would more accurately convey the > sort of thing we're trying to do? > > -- > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elixir-lang-core/8a823a05-3da0-4de8-b96c-273bd12297b8%40googlegroups.com > <https://groups.google.com/d/msgid/elixir-lang-core/8a823a05-3da0-4de8-b96c-273bd12297b8%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/CAAHw6CKCXb0Q67YMXFF0_fdcUaLvXWnAz5mLHEGFCZB%2BrU_J_Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
