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What is the correct way to create a single-instance WPF application?
Using C# and WPF under .NET (rather than Windows Forms or console), what is the correct way to create an application that can only be run as a single instance?
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Why don't self-closing script elements work?
...d to work in Chrome, Safari, and Opera; to my knowledge it never worked in Internet Explorer or Firefox.
This was discussed when HTML 5 was being drafted and got rejected because it breaks browser compatibility.
Webpages that self-close script tag may not render correctly (if at all) in old browser...
How do I check the operating system in Python?
...tform == "linux" or platform == "linux2":
# linux
elif platform == "darwin":
# OS X
elif platform == "win32":
# Windows...
sys.platform has finer granularity than sys.name.
For the valid values, consult the documentation.
See also the answer to “What OS am I running on?”
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How can I update npm on Windows?
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This is the new best way to upgrade npm on Windows.
Run PowerShell as Administrator
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
npm install -g npm-windows-upgrade
npm-windows-upgrade
Note: Do not run npm i -g npm. Instead use npm-windows-upgrade to ...
How to determine total number of open/active connections in ms sql server 2005
My PHP/MS Sql Server 2005/win 2003 Application occasionally becomes very unresponsive, the memory/cpu usage does not spike. If i try to open any new connection from sql management studio, then the it just hangs at the open connection dialog box.
how to deterime the total number of active connectio...
海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...快的返回一个value，这个号称查找速度最快的数据结构是如何实现的呢？看下hashmap的内部结构：
如果我们需要得到key对应的value，需要经过这些计算，传入key，计算key的hashcode，得到7的位置；发现7位置对应的value还有好几个，...
How to trick an application into thinking its stdout is a terminal, not a pipe
...se with an embedded Python library within an executable that is run within Wine. When I ran in a terminal it worked but when I ran the .desktop file I created it would always crash because Py_Initialize didn't see proper stdin/stderr.
– Tatsh
Sep 23 '18 at 8:50...
What's the best way to set a single pixel in an HTML5 canvas?
...As of July 2017, fillRect() is 5-6× faster on Firefox v54 and Chrome v59 (Win7x64).
Other, sillier alternatives are:
using getImageData()/putImageData() on the entire canvas; this is about 100× slower than other options.
creating a custom image using a data url and using drawImage() to show it:...
Format number to 2 decimal places
...fix it. I will still get useful for everyone, and it will be 100% correct. Win-win :)
– Benoit Duffez
Dec 22 '14 at 9:21
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Alternatives to JavaScript
...'t, or rather wasn't, the only language supported by browsers: back in the Internet Explorer dark ages you could choose between Javascript or VBScript to run in IE. Technically IE didn't even run Javascript - it ran JScript (mainly to avoid having to pay Sun for the word java, Oracle still own the n...