查看HashMap源码,发现这个static final int DEFAULT_INITIAL_CAPACITY = 1 << 4; 值为16。 这个是位移算法。 例如: 4<<2 4的二进制是:0000 0100 <<表示往左移两位:00 010000 只要把4转换成二进制,往左移两位,再转换成10进制得出结果既是:16 更简单的计算方法就是 4<< n 等效于 4 乘以 2的 N 次方...
// static final int DEFAULT_INITIAL_CAPACITY = 1 << 4; // aka 16 // 之后每次扩容是原来的2倍 // newThr = oldThr << 1; // 链表阈值超过8则会转换为红黑树 // static final int TREEIFY_THRESHOLD = 8; // 数组、如果链表长度超过8、先扩容数组、如果数值长度超过64、转换为红黑树 // stat...
0x0: initial state. 0x1: The interface is Down. 0x2: The NQA state is Down. 0x4: The BFD state is Down. 0x10: The recursion depth exceeds the upper limit. 0x20: The route is recursed to a default route. 0x40: The route is recursed to a supernet route. 0x80: No IID is ...
Adam: "However, isn't adding methods and/or properties to a given intance of an object increasing the size of the structure (whether it's used or not)."Nope :-)There is a slight (extremely tiny) overhead with the initial load of the class. But that's it. There is no memory over...
and digit span-backward test to assess short term memory113and showed a mean score of 15.42 ± 0.69 and 11.78 ± 2.61 respectively. A letter-number sequencing test was conducted to measure working memory capacity113where the participants showed a mean score of 16.68 ± 3.55....
However, on a lesser scale, works such as [10,16,17,29,30,31] are centered on the capacity of a USV to avoid static obstacles. Figure 1. Interaction between the different systems that allow a boat to be considered as a USV. All these obstacle avoidance methods have a common ...
Together with the impact of SMF on IL-6 shown in Figure 3, these results demonstrate that SMF has the capacity for tuning IL-6 signaling by adjusting the relative proportions of the 'active' ganglioside GM3 and its 'inert' asialo counterpart LacCer (Figure 1K) thereby contributing to the ...
private static final int DEFAULT_INITIAL_CAPACITY = 16; public Stack() { elements = new Object[DEFAULT_INITIAL_CAPACITY]; } public void push(Object e) { ensureCapacity(); elements[size++] = e; } public Object pop() { if (size == 0) ...
If the backing buffer of stk is at capacity, it is reallocated and the Frame objects are copied, resulting in re-allocation of each splices vector. Because of the continue statement, spliceiter is never re-initialized, and an invalidated iterator is used on the next loop iteration. This ...
BaseMpscLinkedArrayQueue(final int initialCapacity) { if (initialCapacity < 2) { throw new IllegalArgumentException("Initial capacity must be 2 or more"); } 2 changes: 1 addition & 1 deletion 2 caffeine/src/main/java/com/github/benmanes/caffeine/cache/stats/CacheStats.java Original file lin...