Aggregation Expression - $ne

Function Build

Build $ne with the Ne function from the aggregation package.

// bson.D{bson.E{Key:"changed", Value:bson.D{bson.E{Key:"$ne", Value:[]interface {}{"$old", "$new"}}}}}
result := aggregation.Ne("changed", "$old", "$new")

Method Build (Builder)

Build $ne with the Ne method from aggregation.NewBuilder().

// bson.D{bson.E{Key:"changed", Value:bson.D{bson.E{Key:"$ne", Value:[]interface {}{"$old", "$new"}}}}}
result := aggregation.NewBuilder().
    Ne("changed", "$old", "$new").
    Build()

Build Without Key

When an expression needs to be passed as an argument to another expression, use a WithoutKey variant to build an expression fragment without an output field name.

NeWithoutKey

Function build:

// bson.D{bson.E{Key:"$ne", Value:[]any{"$status", "disabled"}}}
expr := aggregation.NeWithoutKey("$status", "disabled")

Method build (Builder):

// bson.D{bson.E{Key:"$ne", Value:[]any{"$status", "disabled"}}}
expr := aggregation.NewBuilder().
    NeWithoutKey("$status", "disabled").
    Build()