A developer's productivity relies on being able to find, understand and reuse code as quickly as possible. Code written years ago has value if used or learnt from. Your existing code is your investment. Use searchcode server to find it and retain its value. If you have already solved the problem once why should you solve it again.
You can use searchcode to find the existing nuggets of knowledge you have already invested in. Surface them and gain get the value out of them again and again.