Aggregation Expression - $pow

Function Build

Build $pow with the Pow function from the aggregation package.

// bson.D{bson.E{Key:"squared", Value:bson.D{bson.E{Key:"$pow", Value:[]interface {}{"$value", 2}}}}}
result := aggregation.Pow("squared", "$value", 2)

Method Build (Builder)

Build $pow with the Pow method from aggregation.NewBuilder().

// bson.D{bson.E{Key:"squared", Value:bson.D{bson.E{Key:"$pow", Value:[]interface {}{"$value", 2}}}}}
result := aggregation.NewBuilder().
    Pow("squared", "$value", 2).
    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.

PowWithoutKey

This variant is currently available as a builder method.

Method build (Builder):

// bson.D{bson.E{Key:"$pow", Value:[]any{"$value", 2}}}
expr := aggregation.NewBuilder().
    PowWithoutKey("$value", 2).
    Build()