Object array sorting in Ruby and Ruby object array sorting

Object array sorting in Ruby and Ruby object array sorting

Sorting of Ruby object arrays

The author has just come into contact with Ruby, because he previously thought that the script language syntax is not standardized and he is somewhat biased against the script language. For example, he does not need to learn PYTHON, RUBY, and other languages because it is not required by the project. Now, the task of sorting object arrays is required in the project. For me who started to look at ruby yesterday, the pressure is huge! [Khan]

However, after some data queries, I finally achieved my desired results. Now I have recorded my own test program to remember the first big bang on the ruby road! The Code is as follows:

1 #! /Usr/bin/ruby 2 3 class Location 4 attr_accessor: longpolling 5 attr_accessor: latitude 6 def initialize (lo, la) 7 @ longpolling, @ latitude = lo, la 8 end 9 end10 11 class OBD12 attr_accessor: gps13 attr_accessor: loc14 def initialize (g, l) 15 @ gps = g16 @ loc = l17 end18 19 end20 21 loc = Location. new (10, 20) 22 obd = OBD. new (1, loc) 23 loc2 = Location. new (20,30) 24 obd2 = OBD. new (5, loc2) 25 loc3 = Location. new (4 0, 50) 26 obd3 = OBD. new (2, loc3) 27 28 @ obds = [] 29 @ obds [0] = obd30 @ obds [1] = obd231 @ obds [2] = obd332 33 34 @ obds. sort! {| A, B | a. gps <=> B. gps} # note '! ', If not '! ', Then the original array will not be changed. We recommend that you remove the exclamation point and try the effect 35 puts obd. gps36 puts obd. loc. longitude37 puts obd. loc. latitude38 puts "# {@ obds [0]. gps}, # {@ obds [0]. loc. longpolling}, # {@ obds [0]. loc. latitude} "39 puts" # {@ obds [1]. gps}, # {@ obds [1]. loc. longpolling}, # {@ obds [1]. loc. latitude} "40 puts" # {@ obds [2]. gps}, # {@ obds [2]. loc. longpolling}, # {@ obds [2]. loc. latitude }"

Program running result:

Hope to help you!

[Note]:This article is original by the author.