What is unused code called?

In some areas of computer programming, dead code is a section in the source code of a program which is executed but whose result is never used in any other computation. The execution of dead code wastes computation time and memory.

DO 178B deactivated code?

DO-178B/ED-12B defines dead and deactivated code as follows: Dead code – Executable object code (or data) which, as a result of a design error, cannot be executed (code) or used (data) in an operational configuration of the target computer environment and is not traceable to a system or software requirement.

Why does dead code occur?

Believe it or not, everyone writes dead code. It happens because of code changes. An old function becomes obsolete, the program is changed to use another class, a constant is replaced by another one etc. These changes occur in time as the software is maintained, fixed and developed further.

What is unreachable and dead code?

MISRA C defines unreachable code as code that cannot be executed, and it defines dead code as code that can be executed but has no effect on the functional behavior of the program.

What do I do with dead code?

The quickest way to find dead code is to use a good IDE.

1. Delete unused code and unneeded files.
2. In the case of an unnecessary class, Inline Class or Collapse Hierarchy can be applied if a subclass or superclass is used.
3. To remove unneeded parameters, use Remove Parameter.

What is the meaning of redundant code?

Code redundancy occurs when a character or group of characters in a code word can be partially or completely deduced from the remaining characters of the code word.

What are redundant codes?

In computer programming, redundant code is source code or compiled code in a computer program that is unnecessary, such as:

• recomputing a value that has previously been calculated and is still available,
• code that is never executed (known as unreachable code),

What is the difference between dead code and unreachable code?

Should dead code be removed?

Dead code is normally considered dead unconditionally. Therefore, it is reasonable attempting to remove dead code through dead-code elimination at compile time.

What is meant by code smell?

In computer programming, a code smell is any characteristic in the source code of a program that possibly indicates a deeper problem. Determining what is and is not a code smell is subjective, and varies by language, developer, and development methodology.

Why you should remove dead code?

Dead code needs to be found and removed; leaving dead code in is an obstacle to programmer understanding and action, and there’s the risk that the code is awakened which can cause significant problems. Deleting dead code is not a technical problem; it is a problem of mindset and culture, argued Kevlin Henney.

Should I keep unused code?

Unused code isn’t always dead code. It may execute in certain circumstances. This can not only offer a vector for bugs and performance issues but can also be a security concern. In respect to performance this can express itself in unexpected ways such as larger downloads.

What is redundancy in genetic code?

Redundancy in the genetic code means that most amino acids are specified by more than one mRNA codon. For example, the amino acid phenylalanine (Phe) is specified by the codons UUU and UUC, and the amino acid leucine (Leu) is specified by the codons CUU, CUC, CUA, and CUG.

Why is redundant code bad?

How is redundancy going to affect the code? The code becomes fragile – The developer might not be aware of all the possible copies of the code, may be because he is new to the system, and hence might miss fixing the code at few places and this can lead to a broken functionality.

What does redundancy mean in genetic code?

The genetic code is said to be redundant in that the same amino acid residue can be encoded by multiple, so-called synonymous, codons. If all properties of synonymous codons were entirely equivalent, one would expect that they would be equally distributed along protein coding sequences.