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A comment on Global variables are bad (2013). Parent comment

Re:Global variables are bad (2013) by kyberias on Thursday July 26, 2018 @03:06AM (#17615596)
In many programming languages, "constants" are compile-time and therefore cannot be used for holding command-line parameter value.
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Re:Global variables are bad (2013) by partycoder on Thursday July 26, 2018 @10:42PM (#17623081)
The only invariant of a constant is that it remains constant. The way that abstraction is represented is implementation specific.

Compiler generated constants can still change, because registers and memory are mutable.

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