and<A> function

Predicate<A> Function(Predicate<A> ) and<A>(
  1. Predicate<A> first
)

Creates a new predicate that is the logical conjunction of two given predicates.

Example usage:

```dart
Predicate<int> isEven = (int n) => n % 2 == 0;
Predicate<int> isPositive = (int n) => n > 0;
Predicate<int> isEvenAndPositive = and(isEven)(isPositive);

print(isEvenAndPositive(2));  // Prints: true
print(isEvenAndPositive(-2)); // Prints: false
print(isEvenAndPositive(1));  // Prints: false

Implementation

Predicate<A> Function(Predicate<A>) and<A>(Predicate<A> first) {
  return (Predicate<A> second) {
    return (A value) {
      return first(value) && second(value);
    };
  };
}