If (then else)

If you can keep your code clean while others are corrupting it,

And losing their data and blaming it on you,

If you can be sure that DVCS is right when all coders doubt you,

But make allowance for SVN being pretty nifty too,

If you can wait for compiles and not be tempted to turn off warnings,

Or, seeing a broken window, fix it,

Or, getting a harsh peer review, don't give way to stubborness,

And yet don't appear to be a guru, nor talk like one

Then you'll be a developer, my son.

(From Programmers Stack Exchange, Apologies to Kipling)