filter empty

This block is part of the array group and was last modified in core v10.4.28.

filter empty array v10.4.28

Returns an array of all non-empty items. Empty is defined as: null or undefined.

In pins 2

Array required
array
filter string
condition
If true given, we will filter empty strings too. • Hidden when unused

Out pins 1

Array
array
Array of items that are not empty.

Removes ONLY null items from the array; when filter_empty_string is true it also removes empty strings. Zero, false, empty objects, and empty arrays are NOT removed. Order of the remaining items is preserved.

A typical wiring for filter empty: map feeds the array pin; true feeds the filter_empty_string pin; the array out pin feeds reply in JSON.

Commonly used with

In production blueprints, this block is most often wired together with:

map: feeds into this block. Creates a new array with the results of the provided function on every element in the array.
reply in JSON: this block feeds into it. Reply to any httpconnection as JSON body.
filter types: feeds into this block. Returns an array of all items matching the selected type.
with objects: feeds into this block. Returns an array of objects.
true: feeds into this block. Gives the condition true hard-coded.
set fields: this block feeds into it. Generates an array of mutations based on the given filled fields.

Version history

Introduced in v10.4.28.

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