filter
open fun <Context : Any, T> Value<Context, Collection<T>>.filter(limit: Value<Context, Number>? = null, variableName: String = "this", predicate: AggregationOperators.(Value<Any, T>) -> Value<T & Any, Boolean>): Value<Context, List<T>>(source)
open fun <Context : Any, T> Field<Context, Collection<T>>.filter(limit: Value<Context, Number>? = null, variableName: String = "this", predicate: AggregationOperators.(Value<Any, T>) -> Value<T & Any, Boolean>): Value<Context, List<T>>(source)
open fun <Context : Any, T> KProperty1<Context, Collection<T>>.filter(limit: Value<Context, Number>? = null, variableName: String = "this", predicate: AggregationOperators.(Value<Any, T>) -> Value<T & Any, Boolean>): Value<Context, List<T>>(source)
open fun <Context : Any, T> Collection<T>.filter(limit: Value<Context, Number>? = null, variableName: String = "this", predicate: AggregationOperators.(Value<Any, T>) -> Value<T & Any, Boolean>): Value<Context, List<T>>(source)
Selects a subset of an array to return based on the specified predicate, similarly to kotlin.collections.filter.
The returned elements are in the original order.
Example
class Sensor(
val measurements: List<Int>,
)
collection.updateManyWithPipeline {
set {
Sensor::measurements set (Sensor::measurements).filter { it gte of(0) }
}
}Content copied to clipboard
External resources
Parameters
limit
If set, specifies a maximum number of elements returned: only the first limit matching elements are returned, even if there are more matching elements. Must be greater or equal to 1, or be null.