List out frequently used dataweave inbuilt functions?164

  List out frequently used dataweave inbuilt functions?

DataWeave offers a rich set of built-in functions for various data manipulation tasks. Here are some frequently used functions categorized by their purpose:

General manipulation:

• Concatenation:

• dw::core::++: Combines two strings or arrays.

• Conditional logic:

• isEmpty: Checks if a value is empty (null, "", or []).

• contains: Determines if a string contains a specific substring.

• Iteration and transformation:

• map: Applies an expression to each element in an array and returns a new array.

• filter: Creates a new array containing elements that match a specific condition.

• Aggregations:

• min: Returns the element with the lowest value in an array.

• max: Returns the element with the highest value in an an array.

• avg: Calculates the average of numeric values in an array.

• Type conversion:

• dw::util::Coercions.toArray: Converts a value to an array.

String manipulation:

• Case conversion:

• camelize: Converts a string to camelCase.

• capitalize: Capitalizes the first letter of a string.

• Searching and extraction:

• startsWith: Checks if a string starts with a specific substring.

• endsWith: Checks if a string ends with a specific substring.

• substring: Extracts a portion of a string.

• Formatting:

• trim: Removes leading and trailing whitespace from a string.

• replace: Replaces occurrences of a substring with another string.

Date and Time:

• Date manipulation:

• dw::core::Dates.format: Formats a date according to a specific pattern.

• dw::core::Dates.daysBetween: Calculates the number of days between two dates.

• Time conversion:

• dw::core::Dates.parse: Parses a string into a date object.

Arrays:

• Filtering and transformation:

• filter: Creates a new array containing elements that match a condition.

• flatMap: Applies an expression to each element in an array and flattens the results.

• Aggregations:

• countBy: Counts the occurrences of each unique value in an array.

• sumBy: Calculates the sum of a specific property across all elements in an array.

This is not an exhaustive list, but it highlights some of the most commonly used DataWeave functions. You can find a comprehensive reference of all functions in the MuleSoft documentation https://docs.mulesoft.com/dataweave/latest/dw-functions.