我只想写一个包含一个ID数组的类的Ruby脚本(无栏)。这是我的原班:在Ruby对象类中创建一个数组
# define a "Person" class to represent the three expected columns
class Person <
# a Person has a first name, last name, and city
Struct.new(:first_name, :last_name, :city)
# a method to print out a csv record for the current Person.
# note that you can easily re-arrange columns here, if desired.
# also note that this method compensates for blank fields.
def print_csv_record
last_name.length==0 ? printf(",") : printf("\"%s\",", last_name)
first_name.length==0 ? printf(",") : printf("\"%s\",", first_name)
city.length==0 ? printf("") : printf("\"%s\"", city)
printf("\n")
end
end
现在我想一个数组叫ID添加到类,我可以将其包含在Struct.new声明像Struct.new(:FIRST_NAME,:姓氏,:城市,:ids = Array.new)或创建一个实例数组变量或任何定义单独的方法或别的东西?
我想那么能够做这样的事情:
p = Person.new
p.last_name = "Jim"
p.first_name = "Plucket"
p.city = "San Diego"
#now add things to the array in the object
p.ids.push("1")
p.ids.push("55")
和遍历数组
p.ids.each do |i|
puts i
end
你真的应该使用'print'和'puts',不'printf'。 – Linuxios 2012-07-10 20:22:56