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do-while#

Sumit Rawal answered on August 22, 2021 Popularity 6/10 Helpfulness 1/10

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  • do-while#

    0

    Scala also has a do-while loop which works exactly like the while loop with one added difference that it executes the block of code before checking the condition. do-while ensures that the code in the curly brackets {} will execute at least once.

    Syntax

    The syntax is as follows.

    Let’s look at a very simple example to understand the subtle difference between while and do-while.

    The code below declares an immutable variable alwaysOne which is assigned a value of 1. We want to print the value of alwaysOne when it is not 1 (what a paradox!)

    As the condition of a != 1 can never be true, the value of a should never be printed. But that’s not the case. Let’s run the same code using while and do-while and see what happens.

    Popularity 6/10 Helpfulness 1/10 Language scala
    Source: Grepper
    Tags: scala
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    Contributed on May 23 2023
    Sumit Rawal
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