What is the difference between " while 1" and "while true", Should I use one over the other?
13 views (last 30 days)
Show older comments
I'd like to know the difference between while 1 and while true and in which cases I should use one over the other. Thank you
0 Comments
Accepted Answer
James Tursa
on 26 Jul 2022
Edited: James Tursa
on 26 Jul 2022
1 is a double class scalar and true is a logical class scalar, so the check for "non-zero" is slightly different for each even though they both accomplish the same thing. For all we know the parser might even optimize this away into a simple GOTO at the end of the loop. But since you are using the value in a logical context, using true probably makes more sense. I suppose checking a 1-byte integer value in the background (logical) might be ever so slightly faster than checking an 8-byte floating point value in the background (double) also, although for an interpreted language like MATLAB I doubt you could tell the difference in timing.
0 Comments
More Answers (0)
See Also
Categories
Find more on Loops and Conditional Statements in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!