premature optimization
Noun
Meaning
premature optimization (countable and uncountable, plural premature optimizations)
(programming) The act of wasting resources on optimising source code that does not represent a significant bottleneck.
Examples
Premature optimization is the root of all evil.
Premature optimization is the root of all evil in programming.
The real problem is that programmers have spent far too much time worrying about efficiency in the wrong places and at the wrong times; premature optimization is the root of all evil (or at least most of it) in programming.