collectype / factory/numbers/numberRange / numberRangeFactory
numberRangeFactory<
T,C>(ctx,oper): <K>(field,min,max) =>C
Defined in: factory/numbers/numberRange.ts:41
Creates a predicate filter for number range using PredicType.number.range.
T
The item type in the collection.
C extends Wherable<T, C>
The Wherable context type (must extend Wherable<T, C>).
C
The context (usually a collection) supporting the where method.
NumberRangeOper
The number range operation (e.g., ‘between’, ‘notBetween’, etc.).
Returns a function that takes a field (of type number on T), a min and max value, and applies the number range predicate to filter the context.
<
K>(field,min,max):C
K extends string | number | symbol
K
number
number
C
// Example: Composing a number range filter as a property, homogeneous model
import { BaseFunctions } from 'collectype';
import { numberRangeFactory } from 'collectype';
type Person = { name: string; age: number };
class PersonFunctions extends BaseFunctions<Person> {
numberBetween = numberRangeFactory<Person, this>(this, 'between');
}
// Usage:
const people: Person[] = [
{ name: 'Alice', age: 30 },
{ name: 'Bob', age: 18 },
{ name: 'Charlie', age: 40 }
];
const fn = new PersonFunctions(people);
const filtered = fn.numberBetween('age', 20, 35);
// filtered contains the items where 'age' is between 20 and 35