Logic Blocks
If/Else Block
Choose between two different values based on a condition
Overview
The If/Else Block is a control flow block that allows you to choose between two different values based on a condition. It evaluates a condition and outputs either a “true” value or a “false” value depending on the result.Inputs
If this is truthy, the
true value will be passed through the output port. Otherwise, the false value will be passed through the output port. An unconnected port is considered false. A Not Ran value is considered false. Required.The value to pass through the output port if the condition is truthy.
The value to pass through the output port if the condition is not truthy.
Outputs
The
true or false value, depending on the if condition.Editor Settings
If enabled, unconnected input ports are control-flow-excluded. If disabled (legacy behavior), unconnected ports will pass through undefined values.
Example: Choose between two values based on a condition
- Create a Bool Block and set its value to
true. - Create two Text Blocks with values
HelloandWorld. - Create an If/Else Block. Connect the Bool Block to
If,HellotoTrue, andWorldtoFalse. - Run the flow. The output should be
Hello. - Change the Bool Block to
falseand run again. The output should now beWorld.
Error Handling
The If/Else block will not throw an error under normal circumstances. If both the true and false values are unconnected or control-flow-excluded, the output will be control-flow-excluded.FAQ
What is considered truthy in Odella?
What is considered truthy in Odella?
The following values are considered truthy:
- Boolean
true - Any non-zero number
- Any non-empty string
- Any non-empty Array
- Any object with a truthy value
- Any function
- Boolean
false - Zero
- Empty string
- Empty array
- null/undefined
- The string value
"false" Not Ranvalues
What happens if the `If` input is `Not Ran`?
What happens if the `If` input is `Not Ran`?
If the
If input is Not Ran, the False value will be passed through instead. If the False value is not connected and “Don’t run unconnected ports” is enabled, then the result will be control-flow-excluded.Can I use the If/Else Block to choose between two different types of values?
Can I use the If/Else Block to choose between two different types of values?
Yes, you can use the If/Else Block to choose between two different types of values. For example, you can use it to choose between a string and a number based on a condition. The output type will match whichever value (true or false) is passed through.