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How to Make a Ruby Sub-Chain
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How to Make a Ruby Sub-Chain
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This question already has an answer here:
- Extract a substring from a string in Ruby using a regular expression 5 answers
I'm very new to ruby, in fact I just read it today. But I need to do something quick in Ruby, suppose I have a string ABC=180000. What I want to do is remove the last two chars and makes it become 8 chars of string, so the above case result should be 00001800
in case the string ABC=AA000, the final result is 00000AA0
Could you guys tell me how to do this quickly?
Thanks a lot!
Untested as send from mobile:
"180000"[0...-2].rjust 8,"0"
Have a look at the docs: http://ruby-doc.org/core-2.2.3/String.html
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