Matchdata#end one character after match?

ruby-talk
1

I know this is probably just the way it works, but I was a bit antiPOLSed.

irb(main):016:0> md = /X/.match("yzXrb")
=> #<MatchData:0x402fbe8c>
irb(main):018:0> p md.begin(0)
2
=> nil
irb(main):017:0> p md.end(0)
3
=> nil

3 and not 2?

···

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2

"trans. (T. Onoma)" <transami@runbox.com> schrieb im Newsbeitrag news:200409231333.49887.transami@runbox.com...

I know this is probably just the way it works, but I was a bit antiPOLSed.

irb(main):016:0> md = /X/.match("yzXrb")
=> #<MatchData:0x402fbe8c>
irb(main):018:0> p md.begin(0)
2
=> nil
irb(main):017:0> p md.end(0)
3
=> nil

3 and not 2?

Yes, and it's reasonable: all sorts of computations are a lot easier with this convention. For example:
length = m.end(0) - m.begin(0)
empty = m.begin(0) == m.end(0)
etc.

All libs that deal with sub sequences reasonable do it this way. *I* would have been surprised if it was otherwise.

Regards

    robert