I often use this code pattern:
while(true) {
//do something
if() {
break;
}
}
Another progr
To quote that noted developer of days gone by, Wordsworth:
...
In truth the prison, unto which we doom
Ourselves, no prison is; and hence for me,
In sundry moods, 'twas pastime to be bound
Within the Sonnet's scanty plot of ground;
Pleased if some souls (for such their needs must be)
Who have felt the weight of too much liberty,
Should find brief solace there, as I have found.
Wordsworth accepted the strict requirements of the sonnet as a liberating frame, rather than as a straightjacket. I'd suggest that the heart of "structured programming" is about giving up the freedom to build arbitrarily-complex flow graphs in favor of a liberating ease of understanding.
I freely agree that sometimes an early exit is the simplest way to express an action. However, my experience has been that when I force myself to use the simplest possible control structures (and really think about designing within those constraints), I most often find that the result is simpler, clearer code. The drawback with
while (true) {
action0;
if (test0) break;
action1;
}
is that it's easy to let action0 and action1 become larger and larger chunks of code, or to add "just one more" test-break-action sequence, until it becomes difficult to point to a specific line and answer the question, "What conditions do I know hold at this point?" So, without making rules for other programmers, I try to avoid the while (true) {...} idiom in my own code whenever possible.