| Tag Link | [While] ... | Category | Conditional |
|---|---|---|---|
| Type | Container | Source Available | No |
| Support | Preferred | Version | 2.5 |
| Change | Unchanged | Data Source | Any |
| Output Type | None | Security | None |
| Implementation | Internal | Sets | Lasso 8.5, Lasso 8.0, Lasso 7.0, Lasso 6.0, Lasso 5.0, Lasso 3.x, Lasso 2.5 |
[While] ... [/While] repeats the contents of the container tag until the condition specified in the opening tag returns False.
[While: Conditional Expression]
...
[/While]
| Required Parameters | |
|---|---|
| Conditional Expression | The conditional expression which is executed on each repetition of the contents of the container tag. |
To repeat a calculation until the desired result is achieved:
Use the [While] ... [/While] tags with an appropriate conditional expression. The following example calculates the Fibonacci numbers until one greater than 1000 is returned.
[Var: 'Fibonacci_One'=1]
[Var: 'Fibonacci_Two'=1]
[While: (Var: 'Fibonacci_One')<1000]
[Var: 'Fibonacci_New'=(Var:'Fibonacci_One') + (Var:'Fibonacci_Two')]
[Var: 'Fibonacci_Two'=(Var:'Fibonacci_One')]
[Var: 'Fibonacci_One'=(Var: 'Fibonacci_New')]
[/While]
<br>[Var:'Fibonacci_One']
<br>1597
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