Yoda condition
The programming practise of using
if (constant == variable)
e.g.
if (4 == foo)
if (variable == constant)
It is named after the Star Wars character Yoda who says things like "Strong is Vader". It may have been invented as a way to prevent coding errors like
if (count = 5)
(accidentally using a single "=" (assignment) instead of a double "==" (comparison)). The above is syntactically valid whereas the Yoda equivalent would give a compile-time error.