the safe navigation operator (also known as optional chaining operator, safe call operator, null-conditional operator, null-propagation operator) is a...

operand. ?: or conditional operator, when used as a ternary operator Safe navigation operator, often ?. Spaceship operator <=> Option type Joyce Farrell...

Equivalent to */ $a = $a ?? $b; Since version 8.0 PHP also supports Safe navigation operator (?->). $variable = $object?->method(); /* Equivalent to */ $variable...

a ternary operator Elvis operator, a binary operator in certain computer programming languages Safe navigation operator, a binary operator in object-oriented...

doom, e.g. used in JavaScript Law of Demeter Safe navigation operator, a programming language operator that lets one avoid the pyramid of doom Dave Herman...

that use null-safe types by default include JetBrains' Kotlin, Rust, and Apple's Swift. Nullable type Option type Safe navigation operator C.A.R. Hoare:...

explicitly, or with the aid of Kotlin's null-safe operators: ?. (the safe navigation operator) can be used to safely access a method or property of a possibly...

iteration, string interpolation, added helper methods, and the safe navigation operator ?. to check automatically for null pointers (for example, variable...

languages, string concatenation is a binary infix operator, and in some it is written without an operator. This is implemented in different ways: Overloading...

direct checking of key/value pairs instead of just keys. A new safe navigation operator &. that can ease nil handling (e.g. instead of if obj && obj.foo...

of the new operator to create value type objects, but these value type objects are created on the stack regardless of whether the operator is used or...

direct checking of key/value pairs instead of just keys. A new safe navigation operator &. that can ease nil handling (e.g. instead of if obj && obj.foo...

Radio navigation or radionavigation is the application of radio waves to determine a position of an object on the Earth, either the vessel or an obstruction...

through the environment. Generally, the goal of a navigation function is to create feasible, safe paths that avoid obstacles while allowing a robot to...

The basic principles of air navigation are identical to general navigation, which includes the process of planning, recording, and controlling the movement...

length arrays. This feature leads to possibly non-compile time sizeof operator. void foo(size_t x, int a[*]); // VLA declaration void foo(size_t x, int...

commercial flights. Modern electronic navigation systems made the navigator redundant by the early 1980s. Radio Operator (archaic). A position on much older...

arranged for different handling of these events. Thus, these languages fail safely in this regard. Some (mostly older) languages require that programmers explicitly...

navigational aid for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries...

languages. Different languages use different symbols for the concatenation operator. Many languages use the "+" symbol, though several deviate from this. AWK...

employed using the && and || operators together with operators such as ++, +=, the comma operator, etc. The && and || operators thereby function as combinations...

prefix. with optional dynamic type casting (see dynamic cast) It is almost safe, unsafe features are not commonly used. with optional dynamic type (see dynamic...

Operator as last object of line Ruby (comment may follow operator) Operator as first character of continued line AutoHotkey: Any expression operators...

Object-oriented constructors Operators Ternary conditional operator Null coalescing operators Safe navigation operators Modulo operators Evaluation strategy List...

markers sharing the waterways rules and regulations emergencies safe boat operation navigation emergency preparedness fueling safety craft loading craft inspection...

Object-oriented constructors Operators Ternary conditional operator Null coalescing operators Safe navigation operators Modulo operators Evaluation strategy List...

In engineering, a fail-safe is a design feature or practice that, in the event of a failure of the design feature, inherently responds in a way that will...

C++ features user-defined operator overloading. Operator overloading allows for user-defined types to support operators (arithmetic, comparisons, etc...

President of the United States and the Secretary of Defense. Most Delta Force operators and combat support members are selected from the Army Special Operations...

Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator...