ruby杂记

最新推荐文章于 2025-09-10 23:21:09 发布

weixin_30847865

最新推荐文章于 2025-09-10 23:21:09 发布

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CC 4.0 BY-SA版权

文章标签： ruby

原文链接：http://www.cnblogs.com/lly-lly/p/5887705.html

ruby基本类中的方法：puts Object.private_instance_methods

范围：

a=1..20
puts a.min
puts a.max
puts a.reject{ |i| i< 15}
puts a.select{ |i| i< 15}
a.each do |i|
  print i.to_s+", "
end

HASH

hash={
    "name" => "xiaoming",
    "age"  => 18,
}
person=Hash.new
puts "Num is :"+person.size.to_s
person['name'] = "xiaoming"
puts "Num is :"+person.size.to_s

print hash.keys()
puts
puts hash.include?('name')
hash.delete('name')
puts hash.has_key?('name')
print hash.values


hash={
    "name" => "xiaoming",
    "age"  => 18,
}
puts" each, each_key, each_value, eack_pair"
hash.each do |key, value|
  puts "key: "+key.to_s+"  value: "+value.to_s
end

转载于:https://www.cnblogs.com/lly-lly/p/5887705.html