Dictionary Has Key

Tests Dictionary Has Key using the configured inputs. Its Boolean result selects whether the If body runs; it does not assign a numeric result.

Where to find it

If → Choose Operation → Dictionary. Requires Dev access to configure, then a successful compile to activate.

Inputs

Input	Type	Role	Requirement	Default / constraint
Dictionary	Dictionary<K,V>	Value	Required	Required
Key	Compatible declared type	Value	Required	Required

Result and behavior

Returns a Boolean test for If.

Configuration example

Block: If
Operation: Dictionary Has Key
Dictionary: a declared Dictionary<String,Number> containing Alex → 10
Key: Number 1 (match the destination/element type)

Use this as an editor configuration: declare any Variables/collections first and choose real locations/eligible targets for your plot. It is not pasteable source code.

Restrictions and troubleshooting

Initialize the collection first. Element/key/value declarations are invariant. Reference inputs share mutable contents; choose a copy mode when isolation is required. List indices begin at 1; unsuccessful index searches return 0.

Related guides

Editor · Arguments · Targets · Expressions · Native behavior

Reference identifier: dictionary.has_key.