从ThreadPoolExecutor中访问提交的对象(Access the submitted object from within a ThreadPoolExecutor)
public void execute(Runnable command)
此命令对象包含提交的对象,但它似乎已被包装。
如何从自定义线程池执行程序中访问提交的对象? 或者从ThreadPoolExecutor的before / after / execute方法中尝试访问提交的对象是不是一个好主意?
public void execute(Runnable command)
This command object contains the submitted object, but it seems to have been wrapped.
How can I access the submitted object from within a custom thread pool executor? Or is it not such a good idea to try and access the submitted object from inside a ThreadPoolExecutor's before/after/execute methods?
原文:https://stackoverflow.com/questions/6562742
更新时间:2023-05-11 07:05
最满意答案
您可以使用
Array.reduce
原型函数轻松实现:var allUsers = [ { groupId: 1, userName: 'mario' }, { groupId: 1, userName: 'luigi' }, { groupId: 2, userName: 'peach' }, { groupId: 2, userName: 'koopa' } ] var getNames = function getNames(groupId, users) { return users.reduce(function(res, u) { if (u.groupId === groupId) { res = res + (res.length > 0 ? ', ' : '') + u.userName } return res }, '') } console.log(getNames(1, allUsers))
You can easily achieve that using the
Array.reduce
prototype function:var allUsers = [ { groupId: 1, userName: 'mario' }, { groupId: 1, userName: 'luigi' }, { groupId: 2, userName: 'peach' }, { groupId: 2, userName: 'koopa' } ] var getNames = function getNames(groupId, users) { return users.reduce(function(res, u) { if (u.groupId === groupId) { res = res + (res.length > 0 ? ', ' : '') + u.userName } return res }, '') } console.log(getNames(1, allUsers))
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