The List block

The List block sends an array in your Flow. You can define the items in the array by embedding data blocks in the List block. For example, you could embed a Now block, a Bool block, and a String block in a List block. The output would be something like [1723043098836,false,"<string>"].

Embedding a Select block in the List block enables you to select information sent from another block and pass it into the List block. This is useful for adding API response information to your List block.

Each item in the List block has an index number next to it, indicating the item's position in the array. The first index number in the list is 0.

Input

The List block has no input port by default. When you embed a Select block in the List block, an input port appears where the embedded Select block can receive data from another block. You can then use the embedded Select block to choose a specific piece of data to be added to the List block's array. See Setup for more details. You can also embed List blocks inside List blocks to create nested arrays.

Output

The List block has a single output port that sends an array when the block executes. The array is formatted like this: [item,item,item].

Setup

When you create a List block, it contains an empty array ([]). It has an index number, 0, but no items. To add items to the List block's array, select the Add data blocks icon and select a block from the dropdown list. The embedded block's data becomes an item in the List block's array. The item's index number appears next to the embedded block.

If you embed a Select block, it adds an input port to the List block. You can then connect another block's output port to the embedded Select block's input port, and select a specific piece of information from the incoming dat. The selected information becomes an item in the List block's array.

Example

To see the List block in an example Flow, check out Flow Snippets: List.

Related blocks

You can embed the following blocks in the List block to add their data as items in the array:

• String
• Bool
• Number
• Null
• Regex
• Select
• Now
• Date
• Date & Time
• List
• Record
• Get Variable

You can embed the List block in the following blocks:

• Evaluate
• List
• If
• Record