Swift - Continue Statement
The continue statement in Swift let the program skip a block of codes for current iteration in a loop. Whenever the condition is fulfilled, the continue statement brings the program to the start of the loop.
When the continue statement is used in a nested loop (loop inside loop), it will skip innermost loop's code block as the condition is fulfilled.
Continue statement with While loop
In the example below, continue statement is used to skip the while loop if the value of variable j becomes 4.
var j = 0 while (j < 6){ j = j + 1 if(j == 4){ print("this iteration is skipped.") continue } print(j) }
The output of the above code will be:
1 2 3 this iteration is skipped. 5 6
Continue statement with For-In loop
In the example below, continue statement is used to skip the for-in loop if the value of variable i becomes 4.
for i in (1...6) { if(i == 4) { print("this iteration is skipped.") continue } print(i) }
The output of the above code will be:
1 2 3 this iteration is skipped. 5 6
Continue statement with Nested loop
The Continue statement skip the inner loop's block of codes whenever condition is fulfilled. In below mentioned example, program skips the inner loop only when j = 100.
//Nested loop without continue statement print("// Nested loop without continue statement") for i in (1...3) { for j in [10, 100, 1000] { print(i*j) } }
The output of the above code will be:
// Nested loop without continue statement 10 100 1000 20 200 2000 30 300 3000
//Nested loop with continue statement print("// Nested loop with continue statement") for i in (1...3) { for j in [10, 100, 1000] { if(j == 100){ continue } print(i*j) } }
The output of the above code will be:
// Nested loop with continue statement 10 1000 20 2000 30 3000