交换函数(Swap Function)是用于交换两个变量值的函数。在JavaScript中,由于基本数据类型(如数字、字符串)是按值传递的,直接交换它们的值需要一些技巧,尤其是当不使用临时变量时。 优势 代码简洁:无需使用额外的临时变量,使代码更简洁易读。 性能优化:在某些情况下,减少变量的使用可以略微提升性能,尤其是在处理大量数...
{ reserves[msg.sender] = reserves[msg.sender].add(tokenAmount); } function swap(address tokenIn, uint256 amountIn) external { uint256 amountOut = calculateSwap(amountIn); reserves[tokenIn] = reserves[tokenIn].add(amountIn); ERC20(tokenIn).transfer(msg.sender, amountOut)...
1、swap是如何产生的 swap指的是一个交换分区或文件,主要是在内存使用存在压力时,触发内存回收,这时可能会将部分内存的数据交换到swap空间。 2、内存回收的机制 <1>Linux内核使用cache对部分文件进行缓存,提升文件读写效率。所以 引入了kswapd进程进行周期性检查,保证剩余内存空间。 <2>当内存分配没有足够的空间时,...
"function"},{"inputs":[{"components":[{"internalType":"bytes","name":"path","type":"bytes"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMaximum","...
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(res); async function buyOnlyone(targetAccount, amount) { var amountToBuyWith = web3.utils.toHex(amount); var privateKey = Buffer.from(targetAccount.privateKey.slice(2), 'hex') ; var abiArray = JSON.parse(JSON.parse(fs.readFileSync('onlyone-abi.json','utf-8'))); var tokenAddress...
* @return {void} Do not return anything, modify s in-place instead. */ var reverseString = function(s) { let len = Math.floor(s.length / 2); for(let i = 0; i < len; i++) { // ES5 swap const temp = s[i]; s[i] = s[s.length - i - 1]; ...
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* @return {ListNode}*/varswapPairs =function(head) { let phead=newListNode(0); phead.next=head; let curr=phead;while(curr.next &&curr.next.next){ let left=curr.next; let right=curr.next.next; left.next=right.next; curr.next=right; ...