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·ÖÒ³ÖÐÓõ½Àà±äÁ¿£¬Ö÷ÒªÊÇÓÃÀ´±ê¼Ç¡°Ò³ÂëÊäÈë¿ò¡±µÄid Èç¹ûÒ»¸öÒ³ÃæÓм¸¸ö·ÖÒ³£¬¡°Ò³ÂëÊäÈë¿ò¡±µÄidÒªÊDz»Í¬µÄ²ÅÄÜ·ÖÇåÊÇÄĸöÒª·ÖÒ³¡£Ê¹ÓÃÀà±äÁ¿¾ÍÊÇΪÁË´ïµ½Õâ¸öÄ¿µÄ£¬ÈÃËùÓеĶÔÏóʵÀý¹²ÓÃÒ»¸ö±äÁ¿£¬²»±ØÃ¿´ÎÖØÐ³õʼ»¯±äÁ¿¡£ Àà±äÁ¿Ê¹ÓôúÂëʾÀý 1 require 'ruby-debug'
2 debugger
3 class Myclassvar
4 @@a=1
5 puts 1111111111111111111111
6 puts @@a
7
8 def testa
9 @@a=@@a+5
10 end
11 def testb
12 @@a=@@a+3
13 end
14 end
15
16 class Reclassvar < Myclassvar
17 def testa
18 @@a+=10
19 end
20 end
21
22 obj=Myclassvar.new
23 puts obj.testa
24 puts obj.testb
25 obj2=Myclassvar.new
26 puts obj2.testb
27 obj3=Reclassvar.new
28 puts obj3.testa

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b = "123"
a = b
b.gsub!(/2/,"")
puts a
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b = "123"
a = "#{b}"
b.gsub!(/2/,"")
puts a
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