Esteemed monks

I am trying to do some more complex etcd tasks and one of them is listing all keys by a prefix. The current API from Net::Etcd only allows for start and end ranges, and they suggest incrementing the range start by one bit to do a prefix search. However, since the keys are typically text strings, this is a bit of a problem.

I found advice suggesting casting strings to unsigned longs and incrementing and then casing back. Unfortunately these are arbitrary length strings and so I have no guarantee that this will be enough space.

Is there some way of incrementing a string by one bit that I haven't seen? Maybe a Perl module or some way of incrementing a base-64-encoded string or something?

In reply to Add 1 to an arbitrary-length binary string by einhverfr

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.