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29 sie 2012 · When designing a loop, think about when the leave-checking should be done; if you want to read from a possibly empty file, it makes sense to check early: Do Until tsIn.AtEndOfStream sLine = tsIn.ReadLine() ...
4 sty 2013 · The only difference between do while and do until is that the first one loops as long as the condition is true, while the second one loops as long as the condition is false. In Javascript you use do {} while() or while() {}. Example: var cnt = 0; do { cnt++; } while (cnt < 10); and: var cnt = 0; while (cnt < 10) { cnt++; }
26 wrz 2024 · Do While and Do Until looping statements are used when you want to repeat a block of code until a condition becomes true or false, that is when you are not aware of the number of times you want to execute the block of code.
You can use the Until keyword in two ways to check a condition in a Do...Loop statement. You can check the condition before you enter the loop (as shown in the following ChkFirstUntil example), or you can check it after the loop has run at least once (as shown in the ChkLastUntil example).
The keyword While will continue the loop as long as condition is True. The keyword Until will continue the loop as long as condition is False. If no condition is specified, the loop will repeat indefinitely or until an Exit Do is encountered. Examples
29 wrz 2022 · Use a Do...Loop structure when you want to repeat a set of statements an indefinite number of times, until a condition is satisfied. If you want to repeat the statements a set number of times, the For...Next Statement is usually a better choice.
Example # Dim copycars(), cars(2), x. Redim copycars(0) x = 0. cars(0) = "Ford" cars(1) = "Audi" cars(2) = "Prius" Do Until x = ubound(cars) copycars(ubound(copycars)) = cars(x) redim preserve copycars(ubound(copycars)+1) x = x + 1. Loop. redim preserve copycars(ubound(copycars)-1) 'trim off the empty last entry. Got any vbscript Question?
