Issue
This Content is from Stack Overflow. Question asked by Robert
How can I check if the something is nil and if its nil then use a different function to set value.
Integer($evm.root.attributes["dialog_cloud_network"]) can be nil in some cases and so I want to use a different function query_catalogitem(:cloud_network) to set value.
Example:
cloud_network_id = Integer($evm.root.attributes["dialog_cloud_network"]) || query_catalogitem(:cloud_network).
The above doesn’t work because cloud_network_id ends with value nil instead of getting the value from query_catalogitem(:cloud_network). How can I resolve this?
Solution
This question is not yet answered, be the first one who answer using the comment. Later the confirmed answer will be published as the solution.
This Question and Answer are collected from stackoverflow and tested by JTuto community, is licensed under the terms of CC BY-SA 2.5. - CC BY-SA 3.0. - CC BY-SA 4.0.