https://www.learncpp.com/cpp-tutorial/overloading-unary-operators/
21.6 — Overloading unary operators +, -, and ! – Learn C++
unary operatorsoverloadinglearnc
https://www.educative.io/courses/mastering-kotlin-essentials/operators-unary-increment-and-decrement
Kotlin Unary Operators and Increment Decrement Explained
Learn how Kotlin handles unary operators and the use of increment and decrement in programming, including operator overloading for custom behavior.
unary operatorskotlinincrementdecrementexplained
https://wiki.ryankes.eu/20201112105050-javascript_unary_operators
JavaScript Unary Operators
Operators JavaScript Typeof Operator .
javascriptoperators
https://sass-lang.com/documentation/breaking-changes/strict-unary/
Sass: Breaking Change: Strict Unary Operators
Syntactically Awesome Style Sheets
breaking changesassstrictoperators
https://help.libreoffice.org/latest/en-US/text/smath/01/03090100.html
Unary/Binary Operators
binaryoperators