About regexp

ruby-talk
1

"a 1 b".sub(/\b1\b/, "2")

=> "a 2 b"

"a * b".sub(/\b\*\b/, "2")

=> "a * b" # Why not "a 2 b" ???

How ??

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# Help Me^^
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2

Because neither " *" nor "* " are word boundaries.

Cheers

robert

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2008/9/22 Kyung won Cheon <kdream95@gmerce.co.kr>:

"a 1 b".sub(/\b1\b/, "2")

=> "a 2 b"

"a * b".sub(/\b\*\b/, "2")

=> "a * b" # Why not "a 2 b" ???

How ??

--
use.inject do |as, often| as.you_can - without end

3

/*/ is a non-word character.

Kyung won Cheon wrote:

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"a 1 b".sub(/\b1\b/, "2")
      

=> "a 2 b"
  

"a * b".sub(/\b\*\b/, "2")
      

=> "a * b" # Why not "a 2 b" ???

How ??

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# Help Me^^
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