About regexp

Ruby
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

2008/9/22 Kyung won Cheon [email protected]:

“a 1 b”.sub(/\b1\b/, “2”)
=> “a 2 b”
“a * b”.sub(/\b*\b/, “2”)
=> “a * b” # Why not “a 2 b” ???

How ??

Because neither " " nor " " are word boundaries.

Cheers

robert

3

/*/ is a non-word character.