Re^3: Regex help

/B(?:3[89]|4\d)/
[download]

This worked like a charm, and really helped me understand the proper syntax of the conditional test.

Thanks much!

Charles Thomas
Madison, WI

Comment on Re^3: Regex help Download Code

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Re^4: Regex help by ikegami (Patriarch) on Oct 26, 2004 at 18:27 UTC
`(?(?{code}true-regexp) (?(?{code}true-regexp\|false-regexp) / B (\d\d) (? (?{ $1 < 38 \|\| $1 > 49 }) # if invalid (?=A)(?=Z) # then fail # else succeed ) /x` [download] It could also have been written: `/ B (\d\d) (?(?{ $1 >= 38 && $1 <= 49 }) # if valid # succeed \| # else (?=A)(?=Z) # fail ) /x` [download] `(?=A)(?=Z)` means the next char must be an 'A' and must be a 'Z'. That's never gonna happen.	[reply] [d/l] [select]

Replies are listed 'Best First'.

Re^4: Regex help
by ikegami (Patriarch) on Oct 26, 2004 at 18:27 UTC

(?(?{code}true-regexp)
(?(?{code}true-regexp|false-regexp)

/
   B
   (\d\d)
   (?
      (?{ $1 < 38 || $1 > 49 })  # if invalid
      (?=A)(?=Z)                 # then fail
                                 # else succeed
   )
/x
[download]

It could also have been written:

/
   B
   (\d\d)
   (?(?{ $1 >= 38 && $1 <= 49 })  # if valid
                                  # succeed
      |                           # else
      (?=A)(?=Z)                  # fail
   )
/x
[download]

(?=A)(?=Z) means the next char must be an 'A' and must be a 'Z'. That's never gonna happen.

[reply]
[d/l]
[select]