What is safe navigation operator C#?
In object-oriented programming, the safe navigation operator (also known as optional chaining operator, safe call operator, null-conditional operator, null-propagation operator) is a binary operator that returns null if its first argument is null; otherwise it performs a dereferencing operation as specified by the …
What is Elvis operator in C#?
In certain computer programming languages, the Elvis operator, often written?: , or or || , is a binary operator that returns its first operand if that operand evaluates to a true value, and otherwise evaluates and returns its second operand.
Does C# have optional chaining?
Another new feature introduced in C# 6 is the null-conditional operator, which helps us avoid verbose null reference checks and offers optional chaining.
Why do we use dot in C#?
The member access (dot) operator (“.”) is used frequently to access a field or to call a method on an object. object a = new object(); a. ToString(); The dot operator is also used to form qualified names: names that specify the namespace or interface (for example) to which they belong.
What is safe navigation?
Safe navigation requires information on ice conditions and data is gained from satellites, ground-based observations, Polar stations and ice breakers.
What is null propagation C#?
Starting from version 6.0, C# supports a shorter notation, the null conditional operator. It allows checking one or more expressions for null in a call chain, which is called null propagation. Such a notation can be written in a single line whereas a number of if-else statements typically occupy many lines.
Is ternary operator faster than if?
Yes! The second is vastly more readable.
IS null operator in C#?
operator is known as Null-coalescing operator. It will return the value of its left-hand operand if it is not null. If it is null, then it will evaluate the right-hand operand and returns its result. Or if the left-hand operand evaluates to non-null, then it does not evaluate its right-hand operand.
What is question mark in Linq?
It basically means: “Evaluate the first operand; if that’s null, stop, with a result of null.
Does SOLAS apply to all vessels?
SOLAS stands for Safety of Life at Sea. It’s an international agreement that sets basic minimum criteria for all seafarers from signatory nations, dependent on the size and type of vessel. SOLAS V relates to vessels under 150 GT (gross tonnage) used for pleasure purposes.
How many annexes are there in SOLAS?
The current SOLAS Convention includes Articles setting out general obligations, amendment procedure and so on, followed by an Annex divided into 14 Chapters.