Should every Ruby method returning a boolean have a question mark? -

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i have method:

def addnewshow(name)  end

i want return boolean states whether or not successful. should method have question mark on end of name let user know that's returns, despite not being question, , returning answer question "was successful?"

i don't think it's necessary that. include method check if show exists though:

def exists?(show_name)   #your code check if exists   #return boolean value of true/false if show added or not end

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