如何使用dataweave ule子从列表中删除特定字段

Question

how to remove specific fields from Array maps using dataweave without iterating the array

Input:

[{a:1,b:2,c:3,d:4},{a:5,b:6,c:7,d:8}]

I want to remove c and d fields from array(c and d values are dynamic)

output:

[{a:1,b:2},{a:5,b:6}]

How can we do it in data weave

Answer 1

%dw 1.0
%output application/json
---
[{a:1,b:2,c:3,d:4},{a:5,b:6,c:7,d:8}] map 
$ - "c" - "d" 

I used your input inline so it could run easily. When adding to a flow replace it with "payload".

Answer 2

Combination of minus and map is the correct opproach. Map operator does iterate through array.