Mastering Go - Second Edition

The while loop

As discussed earlier, Go does not offer the while keyword for writing while loops but allows you to use a for loop instead of a while loop. This section will present two examples where a for loop does the job of a while loop.

Firstly, let's look at a typical case where you might want to write something like while(true):

for { 
} 

It is the job of the developer to use the break keyword to exit this for loop.

However, the for loop can also emulate a do...while loop, which can be found in other programming languages.

As an example, the following Go code is equivalent to a do...while(anExpression) loop:

for ok := true; ok; ok = anExpression { 
} 

As soon as the ok variable has the false value, the for loop will terminate.

There is ...