$ perl -nle 'print "$_ is ", /^[A-Z][1-9]\.\d\d?[A-Z]*$/ ? "valid" : "
+invalid"' 1078942.in
A1.01A is valid
A1.01B is valid
A1.01B is valid
A2.06AA is valid
A2.06AABB is valid
A2.06B is valid
H2.25 is valid
H3.10 is valid
Imaging Center is invalid
Italy is invalid
K1.03A is valid
K1.03B is valid
R1.19G is valid
R2.25AA is valid
R2.25AABB is valid
R2.25BB is valid
R2.25D is valid
R2.25DD is valid
R2.25F is valid
R2.25FF is valid
V3.26P is valid
V3.26Q is valid
V3.26QR is valid
V3.26R is valid
V3.26R is valid
V3.26S is valid
V3.26ST is valid
V3.26T is valid

[download]
EDIT: to weed out .0 and .00, use this pattern instead: /^[A-Z][1-9]\.(?:[1-9]\d?|0[1-9])[A-Z]*$/

In reply to Re^2: Perl will not match my RegEx pattern.... by hazylife
in thread Perl will not match my RegEx pattern.... by FierceMoose

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.