Ratio. The colon : is a punctuation mark consisting of two equally sized dots placed on the same vertical line. A colon often precedes an explanation, a list, or a quoted sentence.
Read moreWhat is triple dot in Dart?
Since version 2.3, Dart adds a new operator called spread which uses three dots ( … ) notations. It can be used to extend the elements of a Collection . The examples below show the usage of the notation on List , Set , and Map .
Read moreWhat does => mean in flutter?
This arrow syntax is a way to define a function that executes the expression to its right and returns its value .
Read moreWhat means operator in flutter?
An operator is a special symbol that is used to carry out some specific operation on its operand . In Dart, we have a rich set of built-in operators to carry out the different types of operations. There are operators for assignment, arithmetic operations, logical operations, and comparison operations, etc.
Read moreWhat is double dots in Dart?
Cascade notation is syntactic sugar in Dart that allows you to make a sequence of operations on the same object. You can use the “double dot” to call functions on objects and access properties . This “operator” is simply used to make your code cleaner and concise.
Read moreWhat does two question marks together mean?
If double question marks are uses it is to emphasise something in return, usually from the shock of the previous thing said . For example, if I said: ‘My dog just died’ (sad, but used for example…) Someone may reply.
Read moreWhat does double question mark mean in laravel?
operator known as Null Coalescing Operator . It returns its first operand if it exists and is not NULL; otherwise, it returns its second operand. It evaluates from left to right.
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