Untitled
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| Language | Ruby |
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| Owner | w3xue |
| Created | 2 years ago |
| Modified | 2 years ago |
| Visibility | Public |
#!/usr/bin/ruby
# -*- coding: UTF-8 -*-
$var = 1
print "1 -- 这一行输出\n" if $var
print "2 -- 这一行不输出\n" unless $var
$var = false
print "3 -- 这一行输出\n" unless $var
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