Lambdas/Procs in Case Expressions
Most Rubyists know they can use literals, classes, ranges and regular expressions in the when branches of a case expression:
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For better or for worse Perl had significant influence over Ruby’s initial design. A lot of things were directly borrowed from Perl, but over the years the R...
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Using Ruby’s gsub with a block
String#gsub is one of the most used Ruby methods in the wild. Just about every Ruby programmer knows about the method and uses it fairly regularly.
The Elements of Style in Ruby #9: Hash#has_key? and Hash#has_value? are deprecated
One can often find similar code in the wild: