There is a Ruby idiom[0] that I find quite useful (esp. combined with a linter such as Rubocop), leveraging optional parens as a marker of intentional assignmen

There is a Ruby idiom[0] that I find quite useful (esp. combined with a linter such as Rubocop), leveraging optional parens as a marker of intentional assignment: # bad if v = array.grep(/foo/) do_something(v) # some code end # good if (v = array.grep(/foo/)) do_something(v) # some code end Caught a number of nasty bugs that way. [0]: https://github.com/bbatsov/ruby-style-guide#safe-assignment-in-condition https://github.com/bbatsov/ruby-style-guide#safe-assignment-...