blob: 40fb2e7f01d4e7f011dd96da7c540ff1028deec7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
##
# Comparable
#
# ISO 15.3.3
module Comparable
##
# Return true if +self+ is less
# than +other+. Otherwise return
# false.
#
# ISO 15.3.3.2.1
def < other
cmp = self <=> other
if cmp.nil?
false
elsif cmp < 0
true
else
false
end
end
##
# Return true if +self+ is less
# than or equal to +other+.
# Otherwise return false.
#
# ISO 15.3.3.2.2
def <= other
cmp = self <=> other
if cmp.nil?
false
elsif cmp <= 0
true
else
false
end
end
##
# Return true if +self+ is equal
# to +other+. Otherwise return
# false.
#
# ISO 15.3.3.2.3
def == other
cmp = self <=> other
if cmp == 0
true
else
false
end
end
##
# Return true if +self+ is greater
# than +other+. Otherwise return
# false.
#
# ISO 15.3.3.2.4
def > other
cmp = self <=> other
if cmp.nil?
false
elsif cmp > 0
true
else
false
end
end
##
# Return true if +self+ is greater
# than or equal to +other+.
# Otherwise return false.
#
# ISO 15.3.3.2.5
def >= other
cmp = self <=> other
if cmp.nil?
false
elsif cmp >= 0
true
else
false
end
end
##
# Return true if +self+ is greater
# than or equal to +min+ and
# less than or equal to +max+.
# Otherwise return false.
#
# ISO 15.3.3.2.6
def between?(min, max)
if self < min or self > max
false
else
true
end
end
end
|
