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 is the symbol in Swift?
Put simply, @UIApplicationMain is an indicator for Swift applications that indicates which object is your application’s main application delegate file. In Objective-C application templates, you would have a trivial main. m C file which sets the application delegate.
Read moreWhat does == mean in Swift?
The == or equality operator checks whether the two operands are equal . What equal means for an object depends on the implementation of the class or structure. For the NSArray class, the contents of the arrays are compared. In the above example, arr1 is equal to arr2 because the values stored in the arrays are equal.
Read moreWhat does || mean in Swift?
|| Called Logical OR Operator . If any of the two operands is non-zero, then the condition becomes true.
Read moreWhat _ means in Swift?
_ : The under score operator is usually used in swift function definition. It is used to replace the function parameter’s external label.
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