A while loop is a blocking call. Be careful with them. --Curtis Tedd Sperling <tedd@xxxxxxxxxxxx> wrote: >On Dec 26, 2012, at 10:09 AM, Jim Giner <jim.giner@xxxxxxxxxxxxxxxxxx> >wrote: > >> While I fully understand the purpose of the do...while construct, I >just never get used to seeing it used. (in other langs I had to deal >with a 'repeat...until construct and dis-liked that also). I pretty >much know if I'm going to have to deal with a "run at least once" when >I'm coding and therefore code appropriately, altho I don't know in what >ways I've handled it at this very moment. >> -snip- >> To me - so much easier to comprehend at first glance. As soon as my >eye comes to a block of code starting with a conditional like 'while', >I readily see what makes it tick. Again I see the potential usefulness >of doing it the other way as you did in your example, but in your case >there wasn't a need for using 'do...while' since you structured it so >that there was never a case where you had to force the loop to happen >regardless of conditions. > >I too used while's instead of do's for the same reason. > >However, in my class I had a student show be the light (one can always >learn from beginners). > >Think of it this way, you travel into the code knowing that at some >point you're going to repeat the block of code IF a condition is going >to be met within the block of code. With that consideration, the >'do/while()' works. > >Using just a 'while()' for everything means you must determine the what >the truth of the 'while()' is going to be AND set that value before the >loop. Whereas, using a 'do/while()', you don't need to set the truth >until the block of code has been implemented AND at that point >determine the truth of the block of code. > >Cheers, > >tedd > > >_____________________ >tedd@xxxxxxxxxxxx >http://sperling.com >-- >PHP General Mailing List (http://www.php.net/) >To unsubscribe, visit: http://www.php.net/unsub.php -- Sent from my Android phone with K-9 Mail. Please excuse my brevity.
