MongoDB request DSL • opensavvy.ktmongo.dsl.aggregation.operators • ArrayValueOperators • takeLast

takeLast

open fun <Context : Any, T> Value<Context, Collection<T>>.takeLast(limit: Value<Context, Number>): Value<Context, List<T>>

Returns the last limit elements in an array, similar to kotlin.collections.takeLast.

Example

class Player(
    val _id: ObjectId,
    val scores: List<Int>,
    val lastScores: List<Int>,
)

players.updateManyWithPipeline {
    set {
        Player::lastScores set Player::scores.takeLast(3)
    }
}

External resources

• Official documentation

open fun <Context : Any, T> Field<Context, Collection<T>>.takeLast(limit: Value<Context, Number>): Value<Context, List<T>>

Returns the last limit elements in an array, similar to kotlin.collections.takeLast.

Example

class Player(
    val _id: ObjectId,
    val scores: List<Int>,
    val lastScores: List<Int>,
)

players.updateManyWithPipeline {
    set {
        Player::lastScores set Player::scores.takeLast(3)
    }
}

External resources

• Official documentation

open fun <Context : Any, T> KProperty1<Context, Collection<T>>.takeLast(limit: Value<Context, Number>): Value<Context, List<T>>

Returns the last limit elements in an array, similar to kotlin.collections.takeLast.

Example

class Player(
    val _id: ObjectId,
    val scores: List<Int>,
    val lastScores: List<Int>,
)

players.updateManyWithPipeline {
    set {
        Player::lastScores set Player::scores.takeLast(3)
    }
}

External resources

• Official documentation

open fun <Context : Any, T> Collection<T>.takeLast(limit: Value<Context, Number>): Value<Context, List<T>>

Returns the last limit elements in an array, similar to kotlin.collections.takeLast.

Example

class Player(
    val _id: ObjectId,
    val scores: List<Int>,
    val lastScores: List<Int>,
)

players.updateManyWithPipeline {
    set {
        Player::lastScores set Player::scores.takeLast(3)
    }
}

External resources

• Official documentation