以类似表格式输出哈希值

Question

我需要将哈希值输出到表格中。数据有一个名为students的数组，其中包含带有键"first_name"，"last_name"和"grade_level"的哈希值。

这是我的代码。

students = []

# Dummy Inputs.
students = [
  {
      "first_name" => "Bob",
      "last_name" => "Builder",
      "grade_level" => 4
      },
  {
      "first_name" => "Test",
      "last_name" => "Buida",
      "grade_level" => 3
      },
  {
      "first_name" => "Senior",
      "last_name" => "June",
      "grade_level" => 5
      },
  {
      "first_name" => "John",
      "last_name" => "Smith",
      "grade_level" => 2
      },
  {
      "first_name" => "Me",
      "last_name" => "Developer",
      "grade_level" => 11
      }]

...

puts "\n--------------- \n" +
          "| CLASS ROSTER \n" +
          "--------------- \n"  # Felt lazy to add them individual put
    puts "First Name    Last Name    Grade Level\n"

    students.each do |student|
      puts "#{student["first_name"]}        #{student["last_name"]}     #{student["grade_level"]}"

我使用tab设置列。有时，它会像下面一样出现故障。

有没有办法让这更好？

Answer 1

可能应该在这里使用String#ljust和String#rjust助手。

首先，让我们准备输出：

puts titles, roster

现在你可以打印出来了：

First Name           | Last Name            | Grade Level         
Bob                    Builder                4                   
Test                   Buida                  3                   
Senior                 June                   5                   
John                   Smith                  2                   
Me                     Developer              11   

这是输出：

touchesBegan

随意更改加入者和字段大小以查看其工作原理。