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.NET - Dictionary locking vs. ConcurrentDictionary
...ocking yourself vs using the ConcurrentDictionary type that is built into .NET 4+. I'm actually a little bit baffled that this was accepted.
– mclark1129
Apr 29 '13 at 18:35
4
...
Get operating system info
...mation yet nonetheless pretty much bang on.
Borrowed from an answer on SO https://stackoverflow.com/a/15497878/
<?php
$user_agent = $_SERVER['HTTP_USER_AGENT'];
function getOS() {
global $user_agent;
$os_platform = "Unknown OS Platform";
$os_array = array(
...
Catch an exception thrown by an async void method
...nchronizationContext that was active when the async void method started. - https://msdn.microsoft.com/en-us/magazine/jj991977.aspx
Note that using Wait() may cause your application to block, if .Net decides to execute your method synchronously.
This explanation http://www.interact-sw.co.uk/iangbl...
Namespace not recognized (even though it is there)
...
Check to make sure that your project isn't set up to use the .NET Framework 4 Client Profile.
You can check/change this by right-clicking your project (not the solution), select Properties -> Application -> Target framework. The target framework is a dropdown on that page.
Thi...
tcp端口状态ESTABLISHED、TIME_WAIT、CLOSE_WAIT 、SYN_RECV等详解 - C/C++...
...机器设置
vi /etc/sysctl.conf
编辑文件，加入以下内容：
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
然后执行 /sbin/sysctl -p 让参数生效。
net.ipv4.tcp_syncookies = 1 表示开启SYN Cookies。...
iFrame src change event detection?
...iframe').on('load', function() {
alert('frame has (re)loaded ');
});
https://jquery.com/upgrade-guide/3.0/#breaking-change-load-unload-and-error-removed
share
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improve this answer
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Why are we not to throw these exceptions?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
What exactly are unmanaged resources?
... the garbage collector does not know about. For example:
Open files
Open network connections
Unmanaged memory
In XNA: vertex buffers, index buffers, textures, etc.
Normally you want to release those unmanaged resources before you lose all the references you have to the object managing them. You...
Make a bucket public in Amazon S3 [closed]
...
Amazon provides a policy generator tool:
https://awspolicygen.s3.amazonaws.com/policygen.html
After that, you can enter the policy requirements for the bucket on the AWS console:
https://console.aws.amazon.com/s3/home
...
Display text on MouseOver for image in html
...sfiddle here: http://jsfiddle.net/ANKwQ/5/
HTML:
<a><img src='https://encrypted-tbn2.google.com/images?q=tbn:ANd9GcQB3a3aouZcIPEF0di4r9uK4c0r9FlFnCasg_P8ISk8tZytippZRQ'></a>
<div>text</div>
CSS:
div {
display: none;
border:1px solid #000;
height:3...