Re: Convert ASCII string to 7-bit binary string

Here's another regex-based solution:

$string = '4B';

($out = $string) =~ s/(.)/unpack 'B8', $1/eg;
[download]

Fairly straightforward, actually - this globally (/g) matches every character ((.)), executes (/e) the embedded snippet of code, and replaces the matched character with the result of the call to unpack.

EDIT: please see below for a version that actually works properly.

Comment on Re: Convert ASCII string to 7-bit binary string Download Code

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Re^2: Convert ASCII string to 7-bit binary string by Pascal666 (Scribe) on Oct 27, 2015 at 22:21 UTC
Problem is, that doesn't actually work. That outputs "0011010001000010" instead of "01101001000010".	[reply]
Re^3: Convert ASCII string to 7-bit binary string by AppleFritter (Vicar) on Oct 27, 2015 at 22:29 UTC
Mea culpa; I should pay more attention, and not just assume that two similar-looking binary strings are, in fact, the same. Thanks for the correction. Fortunately it's easily-fixed; just use `substr` in the substitution to chop off the first character: `($out = $string) =~ s/(.)/substr unpack('B8', $1), 1/eg;` [download]	[reply] [d/l]
Re^4: Convert ASCII string to 7-bit binary string by ikegami (Patriarch) on Oct 28, 2015 at 21:22 UTC
Seems like a weird way of writing the following to me: `$out = map { substr unpack('B8', $1), 1 } $string =~ /./g;` [download]	[reply] [d/l]