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ruby
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The double bang
In Ruby, you can simply negate an expression by using "!" abc = 'abc' !abc #=> false Similarly, abc = 'abc' !abc #=> false !!abc #=> true Ruby's double-bang negates the negated statement, which...
In Ruby, you can simply negate an expression by using "!" abc = 'abc' !abc #=> false Similarly, abc = 'abc' !abc #=> false !!abc #=> true Ruby's double-bang negates the negated statement, which...