It means that it is an in-out variable . You can do something directly with that variable. It is passed by address, not as a copy.
Read moreWhat is ampersand in Swift?
In Swift, the ampersand (&) indicates that a parameter is being passed inout .
Read moreWhat is pattern matching in Swift?
In Swift, there are two basic kinds of patterns: those that successfully match any kind of value , and those that may fail to match a specified value at runtime. The first kind of pattern is used for destructuring values in simple variable, constant, and optional bindings.
Read moreWhat does A and B mean on Swift?
Equal to operator (==) : It is used to compare two variables. So for a = b == c means. First compare b & c, if they are equal then it returns true to a otherwise it returns false to a . That’s how a is assigned the value.
Read moreWhat does === mean in Swift?
The identical-to operator ( === ) returns false when comparing two references to different object instances, even if the two instances have the same value.
Read moreWhat are the basic operators?
Operators perform mathematical, string, and logical operations on values . Operands are expressions on which operations are performed.
Read moreWhat is XOR in Swift?
A bitwise XOR operation, also known as an exclusive OR operation , results in a value that has each bit set to 1 where one or the other but not both of its arguments had that bit set to 1 .
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