del

Delete a property from a thing.

While almost all functions on things are also available on Type instances, this one is not. This is because a Type instance has a fixed set of properties and so you are not allowed to delete one of them on a single instance. Use mod_type() instead, to delete the property from all instances if this is what you want.

This function generates an event.

Function

thing.del(property)

Arguments

Argument Type Description
property str (required) Name of the property to delete.

Return value

Returns the removed value if successful. A lookup_err() is returned if the property does not exist or bad_data_err() in case the given property is not a valid name.

In versions before v0.9.3 the return value of .del(..) used to be nil when successful.

Example

This code shows some return values for del():

.x = 'create and delete this prop';
.del('x');

Return value in JSON format

"create and delete this prop"