Meaning of safe navigation operator | Babel Free

Definitions

A binary operator that returns its second argument, unless the first argument is null, in which case it returns null; used to simplify code that would otherwise need multiple explicit checks for nullity.

Examples

“One operator I haven't talked about yet is the safe navigation operator (?.). By preceding a dot with a question mark, you can safely navigate to methods or properties of an object even if that object is null.”

“The safe navigation operator (?.) provides navigation on the nested properties without getting any exception when a null value is evaluated from any of the properties iterated.”

“C# 6 introduced a cascading nulls operator, also called the null-conditional operator and the safe navigation operator.”

CEFR level