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每一次点名的点名是什么意思?
原标题:What does the p mean in enumerator each_slice?
  • 时间:2011-10-15 17:50:42
  •  标签:
  • ruby

仅凭好奇, p 出席:,可计算数字:each_slice, 载于:

例如:

(1..3).each_slice(2) {|n| p n}

印刷:

[1, 2]
[3]

以及

(1..3).each_slice(2) {|n| print n}

印刷:

123

while:

(1..3).each_slice(2) {|n| puts n}

印刷:

1
2
3
最佳回答

没有任何神论或奇怪的行为,p指实际的Kernel.p

each_slice is iterating for an slice of 2 elements. 因此:

iteration 1 -> n = [1, 2] iteration 2 -> n = [3]

<Kernel#p在每个航程中写上英文字母,这样就写上了[1, 2],然后写上[3],每一条之后是一条新行。

<Kernel# letters n supplemented by the Value of $, (the field separateor, which is nil byault), so it writtens [1, 2], 并随即写道[3]

最后,Kernel#puts逐个阵列,然后是一条新线。 http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/227540“rel=“noreferer” http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby-talk/227540

问题回答

The s a calls to the methods Kernel#p

[t] 直接撰写<代码>obj.inspect,随后将目前的产出记录与方案的标准产出分开。





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