What is question mark after data type in C#?

What is question mark after data type in C#?

C# provides language support for nullable types using a question mark as a suffix. For example, int? is the same type as Nullable (which is also the same type as Nullable

What does question mark mean in code?

The conditional (ternary) operator is the only JavaScript operator that takes three operands: a condition followed by a question mark (? ), then an expression to execute if the condition is truthy followed by a colon ( : ), and finally the expression to execute if the condition is falsy.

What is question mark after variable?

The question mark? in typescript is used in two ways: To mention that a particular variable is optional. To pre-check if a member variable is present for an object.

What is the other name of question mark operator?

The question mark? (also known as interrogation point, query, or eroteme in journalism) is a punctuation mark that indicates an interrogative clause or phrase in many languages.

What does colon mean in C?

It’s a bit field. The number after the colon is how many bits each variable takes up. Copy link CC BY-SA 2.5.

What does two question marks mean in C#?

Coalescing operator
The two question marks (??) indicate that its a Coalescing operator. Coalescing operator returns the first NON-NULL value from a chain.

IS null operator C#?

The null-coalescing operator?? returns the value of its left-hand operand if it isn’t null ; otherwise, it evaluates the right-hand operand and returns its result. The?? operator doesn’t evaluate its right-hand operand if the left-hand operand evaluates to non-null.

What is this operator called?:?

3. What is this operator called?:? Explanation: In this operator, if the condition is true means, it will return the first operator, otherwise second operator.

What does a question mark mean in react?

“Question mark” or “conditional” operator in JavaScript is a ternary operator that has three operands. The expression consists of three operands: the condition, value if true and value if false. The evaluation of the condition should result in either true/false or a boolean value.

What does this mean (?)?

(?) is simply a passing note of incertitude at the preceding word (sometimes phrase). I am the tallest(?) in our class. Here this usage indicates that the author is not sure if he/she is really the tallest one.

What is question mark and examples?

A question mark (?) is a punctuation symbol placed at the end of a sentence or phrase to indicate a direct question, as in: She asked, “Are you happy to be home?” The question mark is also called an interrogation point, note of interrogation, or question point.