大约有 5,570 项符合查询结果（耗时：0.0287秒） [XML]
Why does this async action hang?
...sk.Run. In my testing Task.Run is nearly doubling the execution time for a 100ms http request.
– Timothy Gonzalez
Oct 5 '17 at 19:16
...
What are best practices for using SmtpClient, SendAsync and Dispose under .NET 4.0
... I can say that it is not a good approach when you are sending 100+ emails in a loop unless you have ability to configure the exchange server (if you use). Server might throw exception like 4.3.2 The maximum number of concurrent connections has exceeded a limit, closing trasmission chann...
Why do you need to invoke an anonymous function on the same line?
... Major AHA moment here- and thank you for illustrating with substitution. +100
– FredTheWebGuy
Sep 7 '13 at 0:47
1
...
Calculate a Running Total in SQL Server
... int)
set nocount on
declare @i int
set @i = 0
begin tran
while @i < 10000
begin
insert #t (ord, total) values (@i, rand() * 100)
set @i = @i +1
end
commit
Test 1:
SELECT ord,total,
(SELECT SUM(total)
FROM #t b
WHERE b.ord <= a.ord) AS b
FROM #t a
-- CPU...
Singletons vs. Application Context in Android?
...
+100
I very much recommend singletons. If you have a singleton that needs a context, have:
MySingleton.getInstance(Context c) {
//
...
How to add a border just on the top side of a UIView
...
100
Added capability for rounded corners to Adam Waite's original post, and the multiple edits
Imp...
Java Synchronized Block for .class
...able instances of the class on runtime. This means if in runtime there are 100 instances of DemoClass, then only one thread will be able to execute demoMethod() in any one of instance at a time, and all other instances will be locked for other threads.
Class level locking should always be done to ma...
Check if a value is within a range of numbers
...t - range;
}
so if you wanted to see if x was within ±10 of y:
var x = 100;
var y = 115;
nearInt(x,y,10) = false
I'm using it for detecting a long-press on mobile:
//make sure they haven't moved too much during long press.
if (!nearInt(Last.x,Start.x,5) || !nearInt(Last.y, Start.y,5)) clearTi...
How to remove the arrow from a select element in Firefox
...
The trick that works for me is to
make select width more than 100% and apply overflow:hidden
select {
overflow:hidden;
width: 120%;
}
This is the only way right now to hide dropdown arrow in FF.
BTW. if you want beautiful dropdowns use http://harvesthq.github.com/chosen/
...
PostgreSQL Crosstab Query
...:
select m.typeID, m1.highBid, m2.lowAsk, m1.highBid - m2.lowAsk as diff, 100*(m1.highBid - m2.lowAsk)/m2.lowAsk as diffPercent
from mktTrades m
left join (select typeID,MAX(price) as highBid from mktTrades where bid=1 group by typeID)m1
on m.typeID = m1.typeID
left join (select typeID,MIN...