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instance method
Symbol#casecmp?
casecmp?(other_symbol) → true, false, or nil
string.c
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static VALUE
sym_casecmp_p(VALUE sym, VALUE other)
{
if (!SYMBOL_P(other)) {
return Qnil;
}
return str_casecmp_p(rb_sym2str(sym), rb_sym2str(other));
}
Returns true if sym and other_symbol are equal after Unicode case folding, false if they are not equal:
Example
:aBcDeF.casecmp?(:abcde) # => false :aBcDeF.casecmp?(:abcdef) # => true :aBcDeF.casecmp?(:abcdefg) # => false :abcdef.casecmp?(:ABCDEF) # => true :"\u{e4 f6 fc}".casecmp?(:"\u{c4 d6 dc}") #=> true
Returns nil if the two symbols have incompatible encodings, or if other_symbol is not a symbol:
Example
sym = "\u{e4 f6 fc}".encode("ISO-8859-1").to_sym other_sym = :"\u{c4 d6 dc}" sym.casecmp?(other_sym) # => nil :foo.casecmp?(2) # => nil
See Case Mapping.
Related: Symbol#casecmp.