# LAMBDA

LAMBDA(param_or_calc1 [,param_or_calc2])

Returns the results of a formula added as a named range.

 param_or_calc1 The first parameter or calculation. param_or_calc2 (Optional) The second parameter or calculation.

 REMARKS
 * This function was added in Microsoft 365.* For an illustrated example refer to the page under Lambda Functions.* This function can be used to create user defined functions that have a friendly name and can be easily reused.* The parameter names must not contain any numbers.* You can use the BYCOL function to apply a LAMBDA function to each column in an array.* You can use the BYROW function to apply a LAMBDA function to each row in an array.* You can use the ISOMITTED function to return the value True or False depending whether a LAMBDA function parameter is missing.* You can use the MAKEARRAY function to create an array calculated by applying a LAMBDA function.* You can use the MAP function to return an identical array by applying a LAMBDA function to do some processing.* You can use the REDUCE function to return a single value after applying a LAMBDA function to an array.* You can use the SCAN function to return an identical array by applying a LAMBDA function to return some intermediate calculation values.* link - support.microsoft.com/en-us/office/lambda-function-bd212d27-1cd1-4321-a34a-ccbf254b8b67* This function was first released in December 2020, but not available in Excel 2021.* For the Microsoft documentation refer to support.microsoft.com* For the Google documentation refer to support.google.com

 A 1 =LAMBDA(p_one, p_two, SQRT((p_one^2+p_two^2)))(3, 4) = 5 2 =LAMBDA(p_one, LEN(TRIM(p_one)) - LEN(SUBSTITUTE(TRIM(p_one), " ", "")) + 1)("how many words") = 3

 1 - What is the length of the longest side in a right angled triangle.2 - What is the total number of words in a text string.