Re^4: hex code passed from command line is interpreted literally in substitution (strike 3)


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Re^4: hex code passed from command line is interpreted literally in substitution (strike 3)

by tye (Sage)

on Mar 10, 2011 at 17:31 UTC ( [id://892460]=note: print w/replies, xml )

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in reply to Re^3: hex code passed from command line is interpreted literally in substitution
in thread hex code passed from command line is interpreted literally in substitution

The /e option on your s/// makes no difference there for two reasons.

First, you aren't testing what was asked about. $rep = "\x30"; is identical to $rep = "0";. "0" evaluates to "0" so /e makes no difference.

Second, s/.../$rep/ (no /e) does string interpolation on the $rep part which results in the value from $rep being used. s/.../$rep/e (with /e) interpolates $rep as Perl code and the value of eval '$rep' is also just the value stored in $rep.

- tye

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Re^5: hex code passed from command line is interpreted literally in substitution (strike 3) by BrowserUk (Patriarch) on Mar 10, 2011 at 17:51 UTC
Indeed. I completely missed the significance of the problem. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply]

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