It's inside a bunch of rules for which you give "Normal linguistics/interpunction." as a reason. I don't think that applies for the quoted rule - I'd like to know why you would never write 4 == $foo.
It's kind of normal to put the topic (subject) first. 4 is not the topic, because you already know what 4 is. $foo is what you are unsure about.
Consider these sentences:
"If the image on the cover is a camel, the book is probably Programming Perl."
"If a camel is the image on the cover, the book is probably Programming Perl."
"If foo is 4, ..."
"If 4 is foo, ..."
The camel is constant, the image can be anything.
- email@example.com (do not use).
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
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:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||