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Pascal has two forms of the while loop, while and repeat. While repeats one statement (unless enclosed in a begin-end block) as long as the condition is true. The repeat statement repetitively executes a block of one or more statements through an until statement and continues repeating unless the condition is false. The main difference between ...
Loop unrolling, also known as loop unwinding, is a loop transformation technique that attempts to optimize a program's execution speed at the expense of its binary size, which is an approach known as space–time tradeoff. The transformation can be undertaken manually by the programmer or by an optimizing compiler.
When the loop variables index into an array, such a transformation can improve locality of reference, depending on the array's layout. Inversion – this technique changes a standard while loop into a do/while (a.k.a. repeat/until ) loop wrapped in an if conditional
A possible variant is to allow more than one while test; within the loop, but the use of exitwhen (see next section) appears to cover this case better. In Ada, the above loop construct (loop-while-repeat) can be represented using a standard infinite loop (loop - end loop) that has an exit when clause in the middle (not to be confused with the ...
Infinite loops can be implemented using various control flow constructs. Most commonly, in unstructured programming this is jump back up , while in structured programming this is an indefinite loop (while loop) set to never end, either by omitting the condition or explicitly setting it to true, as while (true) ....
“We practice under the beautiful trees while squirrels frolic around, and soak in the benefits of nature while moving our bodies,” Phillips Brinker says. Read more: The 70 best hikes in L.A.
The benefits of walking abound—improving heart health, sleep quality, and mood are just a few of the many pros of going for a stroll. Now, new research has found that walking could add over 10 ...
President-elect Donald Trump is set to take office on Jan. 20. Once he takes the reins, a number of economic changes could ensue. Trump has proposed slapping tariffs on goods the U.S. imports from ...