Last change
on this file since 321 was 321, checked in by coas-nagasima, 7 years ago |
文字コードを設定
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Property svn:eol-style
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native
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Property svn:mime-type
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File size:
1.1 KB
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Rev | Line | |
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[270] | 1 | class Symbol
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| 2 | include Comparable
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| 3 |
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| 4 | alias intern to_sym
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| 5 |
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| 6 | def to_proc
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| 7 | ->(obj,*args,&block) do
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| 8 | obj.__send__(self, *args, &block)
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| 9 | end
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| 10 | end
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| 11 |
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| 12 | ##
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| 13 | # call-seq:
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| 14 | # sym.capitalize -> symbol
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| 15 | #
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| 16 | # Same as <code>sym.to_s.capitalize.intern</code>.
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| 17 |
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| 18 | def capitalize
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| 19 | (self.to_s.capitalize! || self).to_sym
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| 20 | end
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| 21 |
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| 22 | ##
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| 23 | # call-seq:
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| 24 | # sym.downcase -> symbol
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| 25 | #
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| 26 | # Same as <code>sym.to_s.downcase.intern</code>.
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| 27 |
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| 28 | def downcase
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| 29 | (self.to_s.downcase! || self).to_sym
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| 30 | end
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| 31 |
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| 32 | ##
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| 33 | # call-seq:
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| 34 | # sym.upcase -> symbol
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| 35 | #
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| 36 | # Same as <code>sym.to_s.upcase.intern</code>.
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| 37 |
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| 38 | def upcase
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| 39 | (self.to_s.upcase! || self).to_sym
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| 40 | end
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| 41 |
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| 42 | ##
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| 43 | # call-seq:
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| 44 | # sym.casecmp(other) -> -1, 0, +1 or nil
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| 45 | #
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| 46 | # Case-insensitive version of <code>Symbol#<=></code>.
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| 47 |
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| 48 | def casecmp(other)
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| 49 | return nil unless other.kind_of?(Symbol)
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| 50 | lhs = self.to_s; lhs.upcase!
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| 51 | rhs = other.to_s; rhs.upcase!
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| 52 | lhs <=> rhs
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| 53 | end
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| 54 |
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| 55 | #
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| 56 | # call-seq:
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| 57 | # sym.empty? -> true or false
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| 58 | #
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| 59 | # Returns that _sym_ is :"" or not.
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| 60 |
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| 61 | def empty?
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| 62 | self.length == 0
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| 63 | end
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| 64 |
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| 65 | end
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