Scala cycle
Sometimes, we may need to execute the same piece of code multiple times. In general, statements are executed sequentially: the first statement in the function is executed first, then the second statement, and so on.
Programming languages provide a variety of control structures for more complex execution paths.
Loop statements allow us to execute a statement or group of statements multiple times. Here is a flowchart of loop statements in most programming languages:
Cycle type
The Scala language provides the following loop types. Click the link to viewthe details of each type.
Cycle type |
Description |
|---|---|
While cycle |
Run a series of statements that, if the condition is true, run repeatedly until the condition becomes false. |
Do…while cycle |
A similar while statement differs from a block of code that executes a loop before determining a loop condition. |
for cycle |
Used to repeat a series of statements until specific conditions are met, usually by increasing the value of the counter after each loop is completed. |
Loop control statement
Loop control statements change the order in which your code is executed, through which you can jump the code. Scala has the following loop control statements:
Scala does not support break or continue statement, but a way to break the loop has been provided since version 2.8. Click the link below fordetails.
Control statement |
Description |
|---|---|
Break statement |
Break cycle |
Infinite cycle
If the condition is always the true loop becomes an infinite loop We can use it. while statement to implement an infinite loop:
Example
object Test {
def main(args: Array[String]) {
var a = 10;
// Infinite loop
while( true ){
println( "The value of a is : " + a );
}
}
}
The post-execution loop of the above code will be executed forever, and you can use the Ctrl + C key to break the infinite loop.