FVariantValueDeltaOperation<K extends FVariantConstraint, E extends FVariant, V, D extends Delta>.match constructor

FVariantValueDeltaOperation<K extends FVariantConstraint, E extends FVariant, V, D extends Delta>.match(Set<E> variants, V value)

Replaces existing variants whose constraint's variants are all present in variants.

// Given {a: 1, b: 2, c: 3, a & b: 4, a & c: 5}
.match({a, b}, 10) // {a: 10, b: 10, c: 3, a & b: 10, a & c: 5}

See also:

• FVariantValueDeltaOperation.exact for setting exact constraint entries.
• FVariantValueDeltaOperation.base for replacing the base.
• FVariantValueDeltaOperation.variants for replacing all variants.
• FVariantValueDeltaOperation.all for replacing all variants and base.

Implementation

FVariantValueDeltaOperation.match(Set<E> variants, V value)
  : _call = ((base, existing) => .raw(base, {
      for (final MapEntry(key: constraint, value: v) in existing.entries)
        constraint: constraint.satisfiedBy(variants) ? value : v,
    }));