Duplicate code

Dear little one, have you ever done a puzzle before? You know how sometimes there are pieces that look exactly the same? Well, that's kind of like duplicate code in programming.

Duplicate code is when programmers write the same lines of code over and over again in different parts of a program. It's like putting the same puzzle piece in multiple places. It might make sense to do it once or twice, but if you keep doing it, it can create problems.

One big problem with duplicate code is that it makes the program very big and hard to read. It's like having a huge puzzle with way too many pieces. It can make it hard for other programmers to work on the program because they have to search through all that extra code to find what they need.

Another problem with duplicate code is that if there's a mistake in one part of the code, it might get repeated in other parts of the program. That's like having a puzzle piece with the wrong shape copied over and over again.

So, just like in a puzzle, it's really important for programmers to avoid duplicate code when they can. They can do this by writing code that can be reused in multiple places, or by organizing their code in a way that makes it easier to find what they need. That way, the program is easier to work on and there's less chance of errors.