红宝石 |结构 values_at()函数
values_at()是 Ruby 中的一个内置方法,它返回一个包含结构成员值的数组。选择器可以有两种类型:整数或范围偏移。
Syntax: struct_name.values_at(range)
Parameters: The function takes a single parameter range which will specify the start and end of the struct members.
Return Value: It returns the array with member values.
示例 1 :
# Ruby program for values_at method in struct
# Include struct
Student = Struct.new(:name, :address)
#initialize values
detail = Student.new("Raman", "Kolkata")
# values_at used
puts detail.values_at(0, 1)
输出:
Raman
Kolkata
示例 2 :
# Ruby program for values_at method in struct
# Include struct
animals = Struct.new(:name, :speciality , :found_in)
# initialize values
detail = animals.new("labrador", "bark" , "Newfoundland")
# values_at used
puts detail.values_at(1,2)
输出:
bark
Newfoundland