lst_len(L)
Returns the number of elements in a list-value.
Syntax
lst_len(L)Input
| Argument | Type | Description |
|---|---|---|
L |
list-value | The name of the list-value whose length will be returned If
If A list-value |
Return Value
Returns an integer representing the number of elements in L.
Sample Usage
As an example, the following function
call:
list="lst(1 2 3 4)" length="lst_len(list)"returns the number of elements contained in the list-value passed to the
L parameter. The type of the
return value is integer.Example: Get the length of a list
Once a list-value is created, its length can be retrieved using the
lst_len(L) function.
<block name="test" list="{lst('' 'a' 'b' 'c')}"> <willbe name="test1" value="{lst_len(@list)}"/> </block>
The code above creates a list-value called list containing 4 elements in
the opening tag of <block>. A computed column is then created that
displays the number of elements in the list value. In the example above, the return value is
4.