The loop will first execute the body, then check the condition, and, while it’s truthy, execute it again and again. For example: let i = 0; do { alert( i ); i++; } while (i < 3); This form of syntax should only be used when you want the body of the loop to execute at least once regardless of the condition being truthy.
Read moreHow do you stop a while loop in Swift?
Swift – Break Statement
Read moreWhat is a substring in Swift?
When you create a slice of a string, a Substring instance is the result. Operating on substrings is fast and efficient because a substring shares its storage with the original string. The Substring type presents the same interface as String , so you can avoid or defer any copying of the string’s contents.
Read moreIs not a logic operator?
The NOT logical operator reverses the true/false outcome of the expression that immediately follows . The NOT operator affects only the expression that immediately follows, unless a more complex logical expression is enclosed in parentheses. You can substitute ~ or ¬ for NOT as a logical operator.
Read moreWhat is a while loop in Swift?
Swift while loop is used to run a specific code until a certain condition is met . The syntax of while loop is: while (condition){ // body of loop } Here, A while loop evaluates condition inside the parenthesis () . If condition evaluates to true , the code inside the while loop is executed.
Read moreWhat is repeat while loop?
The repeat-while loop will execute the statements at least once even if the defined condition fails (FALSE) because it will execute the statements first then it will perform condition check but in while statements execution will perform only when the defined condition is TRUE.
Read moreWhat is & before a variable in Swift?
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 more