EyeTracking Study: camelCase vs. under_score style (2010) [pdf]

In Perl 6, you can also use &quot;kebab-case&quot;:<p><pre><code> my $is-it-time = True; </code></pre> The hyphen is allowed inside an identifier as long as it is not the first and as long as it is followed by at least one letter.<p><pre><code> my $foo-42; # interpreted as my $foo - 42</code></pre>

My current style convention mixes several naming styles to help in distinguishing code visually.<p>I prefer camelCase for variables, which need to be typed repeatedly, and camel is fastest to type. I use snake_case for functions, UpperCamelCase for classes&#x2F;types, and ALL_CAPS_SNAKE for configuration variables a user would be expected to edit.

For me it&#x27;s more about ease in typing. I find typing underscore so many times a bug deterrent in fast typing speed.

snake case...<p>I did it for years in Perl then moved to camel with Java. Now, I sort of like not having to type underscores.