📄️ $$and
Evaluates to `true` if all values provided will evaluate to `true` (using the [Truthy logic](../truthy-logic))
📄️ $$at
Retrieves an element from a specific position inside an input array
📄️ $$avg
Returns the average of all values in the array
📄️ $$base64
Encode to or decode from base64
📄️ $$boolean
Evaluates input to boolean using the [Truthy logic](../truthy-logic)
📄️ $$coalesce / $$first
Returns the first non-null value
📄️ $$concat
Concatenates primary value array with elements or other arrays of elements
📄️ $$contains
Checks whether an array contains a certain value
📄️ $$csv
Converts an array of objects/arrays to a CSV string
📄️ $$csvparse
Converts a CSV string into an array of objects/arrays
📄️ $$date
Date manipulation and formatting utility
📄️ $$decimal
Converts number to BigDecimal type
📄️ $$digest
Creates a message digest based on a supported algorithm
📄️ $$distinct
Returns a distinct array (repeating elements removed, only primitive values are supported if no `by` was specified)
📄️ $$entries
Gets the entries* of an object or an array
📄️ $$eval
Evaluates the input and then transforms the context with the expression
📄️ $$every / $$all
Checks if all elements in an array satisfy a predicate
📄️ $$filter
Filter input array to all the elements that satisfy the predicate transformer
📄️ $$find
Find the first element in a specified array that satisfy the predicate transformer
📄️ $$findindex
Find the index of the first element in a specified array that satisfy the predicate transformer. If none of the elements satisfy the predicate the result will be `-1`.
📄️ $$flat
Flatten an array of arrays (non array elements will remain)
📄️ $$flatten
Flattens an object into a flat dot seperated list of entries
📄️ $$form
Converts an object to Form URL-Encoded string (a.k.a Query String)
📄️ $$formparse
Parses a Form URL-Encoded string to `object`
📄️ $$group
Groups an array of entries into a map of `key -> array` by a specified transformer (with optional nested grouping)
📄️ $$if
Conditionally returns a value, if the evaluation of the condition argument is truthy (using the [Truthy logic](../truthy-logic)). A fallback value (if condition evaluates to false) is optional
📄️ $$indexof
Find the index of the first element that matches the specified value.
📄️ $$is
Checks value for one or more predicates (all predicates must be satisfied)
📄️ $$isnull
Returns true if value does not exist or equal to null
📄️ $$join
Joins an array of input as strings with an optional delimiter (default is `""`), prefix and suffix. `null` values are omitted
📄️ $$jsonparse
Parses input as JSON string
📄️ $$jsonpatch
Apply patches defined by JSON Patch RFC-6902
📄️ $$jsonpath
Query a JSON document using JSONPath
📄️ $$jsonpointer
Apply mutations or queries over an object using JSON Pointer (defined by RFC-6901)
📄️ $$jwtparse
Parses JWT tokens and returns their payload
📄️ $$length
Returns the length of a value
📄️ $$long
Converts to integer, all decimal digits are truncated
📄️ $$lookup
Joins multiple arrays of objects by a dynamic condition (transformer) on each pair of matches
📄️ $$lower
Converts a string to all lowercase letters
📄️ $$map
Returns a mapped array applying the transformer on each of the elements
📄️ $$match
Returns a matched substring from input by a pattern (and optionally group id)
📄️ $$matchall
Returns all matches substring from input by a pattern (and optionally group id)
📄️ $$math
Evaluate a mathematical expression
📄️ $$max
Returns the max of all values in the array
📄️ $$merge
Merge multiple objects into one. Allows deep merging and array concatenation.
📄️ $$min
Returns the min of all values in the array
📄️ $$normalize
Replace special characters forms with their simple form equivalent (removing marks by default)
📄️ $$not
Returns the opposite of the input's boolean evaluated value (this returns the opposite of [$$boolean](boolean))
📄️ $$numberformat
Formats a number
📄️ $$numberparse
Parses a number from string
📄️ $$object
Reduces an array of entries into an object
📄️ $$or
Evaluates to `true` if any of the values provided will evaluate to `true` (using the [Truthy logic](../truthy-logic))
📄️ $$pad
Pad a provided string with certain character(s) repeated until a certain width of output string
📄️ $$partition
Partition an array to multiple constant size arrays
📄️ $$range
Creates an array with a sequence of numbers starting with `start` up-to `end` in steps of `step`
📄️ $$raw
Returns the input as-is without interpreting transformers
📄️ $$reduce
Reduce an array with an initial value (`identity`) and a context transformer to a single value
📄️ $$repeat
Creates an array with the specified value repeated `count` times
📄️ $$replace
Search and replaces a substring in the given input
📄️ $$reverse
Reverses the order of elements in an array
📄️ $$slice
Gets a slice of an array by indices (negative begin index will slice from the end)
📄️ $$some / $$any
Checks if any elements in an array satisfy a predicate
📄️ $$sort
Sorts elements of an array
📄️ $$split
Splits a string using a given delimiter/regex
📄️ $$string
Converts to string (if `json` set to `true`, will convert `null` and strings also as JSON strings)
📄️ $$substring
Gets a slice of a string by indices (negative begin index will slice from the end)
📄️ $$sum
Returns the sum of all values in an array
📄️ $$switch
Switch-case expression. Value is compared to each of the keys in `cases` and a matching **key** will result with its **value**, otherwise `default` value or `null` will be returned.
📄️ $$template
Renders a specified text template with the given input or specified payload.
📄️ $$test
Checks if a string matches a certain pattern
📄️ $$transform
Applies a transformation inside a transformer (Useful for piping functions results)
📄️ $$trim
Removes whitespaces from sides of string
📄️ $$unflatten
Accepts an object with dot separated field names and merges them into an hierarchical object
📄️ $$upper
Converts a string to all uppercase letters
📄️ $$uriparse
Parses a URI to its components
📄️ $$urldecode
URL decodes as string
📄️ $$urlencode
URL encodes as string
📄️ $$uuid
Format and transform UUID
📄️ $$value
Returns the value if it passes the [truthy logic](../truthy-logic), or `null` otherwise
📄️ $$wrap
Wrap an input string with `prefix` and `suffix`
📄️ $$xml
Converts an object to XML string (a wrapper element can be added by specifying the field `root` with the element name)
📄️ $$xmlparse
Parses an XML and converts it to an object
📄️ $$xor
Evaluates to `true` if only one of the values provided will evaluate to `true` (using the [Truthy logic](../truthy-logic))
📄️ $$yaml
Converts an object to YAML format
📄️ $$yamlparse
Parses a YAML format to `object`