Condition

The Condition operation implements if/else logic. It evaluates the If input and forwards either the True or False input to its output. The execution path is never stopped — downstream operations always receive a result.

With If unconnected the Condition always takes True, which the Editor notes with an info ring on If; with neither True nor False connected Out is always Nil, and the Editor flags the Node with a warning frame.

Inputs

Port	Type	Required	Description
If	Any	No	Condition control. Boolean true or non-Nil selects the True input; false, Nil, or unconnected selects True by default (unconnected) or False (false/Nil).
True	User-configurable	No	Value forwarded when the condition is truthy. Accepted MessagePack types are set in the Node’s Settings panel — see Setting Port Types.
False	User-configurable	No	Value forwarded when the condition is falsy. Accepted types set in Settings.

Outputs

Port	Type	Default	Description
Out	User-configurable	Nil	The selected input value (True or False). Accepted types set in Settings.

Properties

This operation has no configurable properties. Port types for True, False and Out are set in the Node’s Settings panel.

Its Node carries the On Error verb every fallible Operation carries — see the Error Handling guide.

State on Reload

Output is preserved across restarts within the configured time window.

---

How It Works

1. Evaluate If — The If input is checked:

   • Boolean true or non-Nil value → select True input.
   • Boolean false or Nil → select False input.
   • Not connected → True input is always selected.

2. Forward — The selected input value is passed directly to the output without transformation.

No path stopping

The Condition operation always produces an output and never stops the execution path, even if the selected input is Nil.

---

Examples

Data format

All inputs and outputs use MessagePack internally. The examples below show values in JSON notation for readability.

True Condition

Input	Value
If	true
True	"Status: ON"
False	"Status: OFF"

Output: "Status: ON"

False Condition

Input	Value
If	false
True	"Status: ON"
False	"Status: OFF"

Output: "Status: OFF"

Non-Boolean If

Input	Value
If	123
True	"Positive Reading"
False	"Negative Reading"

Output: "Positive Reading"

A non-boolean, non-Nil value is treated as truthy.

Nil If

Input	Value
If	Nil
True	"Success"
False	"Failure"

Output: "Failure"

Unconnected If

Input	Value
If	(not connected)
True	"Default On"
False	"Default Off"

Output: "Default On"

When If is unconnected, the True input is always selected.

---

Use Cases

• Conditional data routing based on a boolean flag or the presence/absence of data
• Implementing if/else branches in data processing workflows
• Selecting between default and override values

---

Limitations

• Only two branches (true/false). For multi-way branching, chain multiple Condition operations.
• No data transformation is performed; the selected input is forwarded as-is.