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As you know, Rust does not support optional function arguments nor keyword arguments, nor function overloading. To overcome this limitation rust developers frequently apply builder pattern. It requires some extra coding, but from the API ergonomics perspective, gives a similar effect as keyword arguments and optional arguments. Introduction to problem Consider the following rust structure: struct

Serhii Potapov August 10, 2012 #unexpected #ruby #behaviour #lambda #proc #time #ensure #DelegateClass #regexp #super Ruby is a cool language with intuitive grammar. However there are a number of things which don't seem to be expected. It might take long hours to debug some weird issues for unenlightened newbies. Implicitly variable declaration Variable mentioned in conditional block of code becom