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package lru
import "container/list"
// New creates a cache with a maximum total weight.
//
// New panics if maxWeight is negative or weightFn is nil.
func New[K comparable, V any](maxWeight int64, weightFn WeightFunc[K, V], onEvict OnEvictFunc[K, V]) *Cache[K, V] {
if maxWeight < 0 {
panic("lru: negative max weight")
}
if weightFn == nil {
panic("lru: nil weight function")
}
return &Cache[K, V]{
maxWeight: maxWeight,
weightFn: weightFn,
onEvict: onEvict,
items: make(map[K]*list.Element),
}
}
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