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||
--------------------------------------------------------- String#casecmp str.casecmp(other_str) => -1, 0, 1 ------------------------------------------------------------------------ Case-insensitive version of String#<=> . "abcdef".casecmp("abcde") #=> 1 "aBcDeF".casecmp("abcdef") #=> 0 "abcdef".casecmp("abcdefg") #=> -1 "abcdef".casecmp("ABCDEF") #=> 0