Ruby换行符的两种使用\n

Question

我有一个关于是否需要使用\n\n 来换行的问题。请参阅以下示例。

如果我这样做..

puts "hello"
puts "hi"

或

puts "hello\n"
puts "hi"

输出是..

hello  
hi

如果我这样做..

puts "hello\n\n"
puts "hi"

输出是..

hello

hi

为什么我需要 \n\n 来制作一个额外的换行符？
为什么单个 \n 没有任何区别？

Answer 1

来自documentation :

puts(obj, ...) → nil

Writes the given objects to ios as with IO#print. Writes a record separator (typically a newline) after any that do not already end with a newline sequence. If called with an array argument, writes each element on a new line. If called without arguments, outputs a single record separator.