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ruby on rails example sites

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The string left complement 0 Method Example _ruby topic in Ruby

Recently there is a need to show the number as a fixed number of digits, the number of digits in the front with 0 supplements Like 5-bit: Copy Code code as follows: 3-> 00003 292-> 00292 12422-> 12422 It's easy to find Ruby. Copy Code code as follows: Irb> "%05d"% 12422 "12422" Irb> "%05d"% 22 "00022" The above approach is basically standard practice. If you are working with strings directly, you can a

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