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lang-rb
#include?is still a little faster.#include?doesn't work when you are working with sentences with spaces inside because#includesplits the sentence in words and then uses the words as separate array values. This works perfectly for sentences. +1[]method for more information.include?does not split the string. It simply checks if a string is or isn't within an other string.'Hello World! How are you?'.include?('e y') #=> trueThis answer does the same thing.'Hello World! How are you?'['e y'] #=> "e y"(which is truthy),nilis returned if there is no match (which is falsy).