Why is this an issue?
The needless repetition of an operator is usually a typo. After all, why write !!!i when !i will do?
On the other hand, the repetition of increment and decrement operators may have been done on purpose, but doing so obfuscates the meaning, and
should be simplified.
This rule raises an issue for sequences of: !, ~, -, and +, and in C++ for repetitions of the
increment and decrement operators.
Noncompliant code example
int i = 1;
int j = - - -i; // Noncompliant; just use -i
int k = ~~i; // Noncompliant; same as i
int m = + +i; // Noncompliant; operators are useless here
bool b = false;
bool c = !!!b; // Noncompliant
Compliant solution
int i = 1;
int j = -i;
int k = i;
int m = i;
bool b = false;
bool c = !b;
Exceptions
Boolean normalization !! is ignored.
