method
swapcase
v2_6_3 -
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- Class:
String
swapcase(*args)public
Returns a copy of str with uppercase alphabetic characters converted to lowercase and lowercase characters converted to uppercase.
See String#downcase for meaning of options and use with different encodings.
"Hello".swapcase #=> "hELLO" "cYbEr_PuNk11".swapcase #=> "CyBeR_pUnK11"