Values · Value
List length
How many items a list has.
get.list_length
In a flow
“Works out list length whenever a step wired to it needs the answer.”
[a, b, c] → 3
What it does
How many items a list has. It's a value node: no white pins, it works out its answer when a step wired to it needs it. It gives 2 values later steps can use. Find it under Values in the palette.
When to use it
Use it when a step needs a value worked out first: how many items a list has.
When not to
For a value that never changes, type it into the setting instead of wiring a node.
Typical wiring
Sockets: settings you can wire
- List List
-
The list to count.
What goes there: Type it in the side panel, or wire in a list. e.g. Hello there, and more like it
If it's empty: Optional. Left empty and unwired, the step runs without it.
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Values it gives
- Length Number
-
A number this step gives the steps after it. e.g. 42
If it's empty: Empty when the step didn't make one (it stopped early or was skipped); steps reading it get nothing.
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- Is empty Yes / no
-
True when the list has nothing in it. e.g. true
If it's empty: Empty when the step didn't make one (it stopped early or was skipped); steps reading it get nothing.
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