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Redundant, or "dead", code imposes a burden on those reading or maintaining the software project.

It can make it harder to understand the structure of the code, as well as increasing the complexity

of adding new features or fixing bugs. It can also affect compilation and build times for the

project, as dead code will still be compiled and built even if it is never used. In some cases it

may also affect runtime performance - for example, fields that are written to but never read from,

where the value written to the field is expensive to compute. Removing dead code should not

change the meaning of the program.

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