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
|
class << Struct.new(:f,:g)
p private_instance_methods(false)
p instance_methods(false)
end
x = Struct.new(:a,:b,:c)
y = Struct.new(:x,:y)
y.send(:initialize_copy, x) rescue p $!
ix1 = x[1,2,3]
ix2 = x[10,20,30]
iy1 = y[6,7]
iy2 = y[60,70]
# invalid arg class:
ix1.send(:initialize_copy, iy1) rescue p $!
ix1.send(:initialize_copy, ix2) rescue p $!
p ix1
Y = y
class YY < Y
end
iyy = YY.new
# error:
iyy.send(:initialize_copy, iy1) rescue p $!
puts '---'
class Struct
def initialize_copy *a
puts 'init_copy'
end
end
x = Struct.new(:a)
p x.private_instance_methods(false)
#y = x.dup
p y.members
class MS < String
end
MS.dup
|
