%dw 2.0 import countCharactersBy from dw::core::Strings output application/json --- "42 = 11 * 2 + 20" countCharactersBy isNumeric($)
Counts the number of times an expression that iterates through
each character in a string returns
Introduced in DataWeave version 2.4.0.
The string to which the
Expression to apply to each character in the