How to reject values in a CDT array on the basis of a condition?

Question

Hi All, 
 I want to reject values in a CDT array on the basis of a condition. 
 For ex - I have a CDT array of type, suppose, type!someType(a,b), where a and b are fields in CDT. Now, My array looks like below: 
 { 
 type!someType(a: 1, b: null) 
 type!someType(a: null, b: 1) 
 type!someType(a: null, b: null) 
 }, 
 I want to filter this array and get only those CDT values where a <> null. 
 What can be the possible way to do it?

Mike Schmitt · Accepted Answer

a!forEach() handles this more gracefully, IMHO, and allows us to skip the awful deprecated "apply()" function. 
 (If I may borrow your original code..) a!localVariables(
 local!data: {
 {a: 1, b: null},
 {a: null, b: null},
 {a: null, b: 1},
 {a: 1, b: 2},
 {a: 2, b: null}
 },
 
 a!forEach(
 items: local!data,
 expression: if(
 isnull(fv!item.a),
 {},
 fv!item
 )
 )

 /*index(*/
 /*local!data,*/
 /*wherecontains(*/
 /*reject(*/
 /*fn!isnull,*/
 /*local!data.a*/
 /*),*/
 /*apply(fn!tointeger,local!data.a)*/
 /*)*/
 /*)*/
)

How to reject values in a CDT array on the basis of a condition?

Top Replies