ruby杂记

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

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" alt="" />

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