Categories
Archives
Monthly Archives: June 2018
Data massaging in pipes with anonymous functions
This technique is obsolete since Elixir v.1.12, as it has introduced then/2 The pipe operator is great. So great, in fact, that sometimes you just want to keep that pipe juice flowing and feel bad about breaking it up just … Continue reading
Posted in Elixir, Pattern snippets
Comments Off on Data massaging in pipes with anonymous functions
Finer control in `with` failed matches
Elixir gives us the with construct to combine matching clauses, which is very handy as programs frequently to perform an operation only if/when a set of preconditions is met. Let’s say we want to charge a product to a credit card: … Continue reading
Posted in Elixir, Pattern snippets
Comments Off on Finer control in `with` failed matches
Pattern matching in function heads: don’t go overboard
Elixir’s pattern matching is great, but make sure it’s not reducing your code’s readability. In particular, just because you can match all the variables you’ll need from within the function’s head doesn’t mean you should. Take this code: def handle_call(:checkout, … Continue reading
Posted in Elixir, Pattern snippets
Comments Off on Pattern matching in function heads: don’t go overboard