Flatten Block
Flatten nested arrays into a single-level array
Overview
The Flatten Block is designed to simplify complex nested array structures by flattening them into a single-level array. This block is particularly useful when dealing with multi-dimensional arrays or when you need to process all elements of a nested structure in a linear fashion.
Key Features
- Flattens nested arrays one level deep
- Preserves the order of elements from the original nested structure
- Handles arrays containing both nested arrays and non-array elements
Inputs
The nested array structure to be flattened. Must be a nested array (array of arrays). Non-nested arrays or other types will result in an error.
Outputs
The resulting flattened array containing all elements from the input, with one level of nesting removed.
Example: Flattening a Nested Array
- Create an Array Block with a nested array structure, e.g.,
[[1, 2], [3, 4], [5, 6]]. - Add a Flatten Block and connect the Array Block to its
input. - Run the flow. The Flatten Block’s
outputwill be[1, 2, 3, 4, 5, 6].
Error Handling
- If no input is provided, the block will error with “Input is required”
- If the input is not a nested array (array of arrays), the block will error with “Input is not a nested array”
- The block will only flatten one level deep - for deeper nesting, multiple Flatten blocks can be chained
FAQ
Does the Flatten Block work with objects?
Does the Flatten Block work with objects?
No, the Flatten Block is designed to work only with nested arrays. It will error if given objects or other non-array inputs.
How deep does the flattening go?
How deep does the flattening go?
The Flatten Block only flattens one level deep. For example, [[1, [2, 3]], [4, 5]] becomes [1, [2, 3], 4, 5]. To flatten deeper levels, chain multiple Flatten blocks together.