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'IF' in 'SELECT' statement - choose output value based on column values
...HEN 'South America'
ELSE 'Europe' END AS Continent
FROM Suppliers
ORDER BY CompanyName;
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How to make overlay control above all other controls?
...vas.Top="200" Canvas.Left="200" Fill="green"/>
<!-- Reverse the order to illustrate z-index property -->
<Rectangle Canvas.ZIndex="1" Width="100" Height="100" Canvas.Top="300" Canvas.Left="200" Fill="green"/>
<Rectangle Canvas.ZIndex="3" Width="100" Height="100" Canva...
Logging in Scala
...ries have been some wrappers around a Java logging framework (slf4j, log4j etc), but as of March 2015, the surviving log libraries are all slf4j. These log libraries provide some sort of log object to which you can call info(...), debug(...), etc. I'm not a big fan of slf4j, but it now seems to be t...
HTTP headers in Websockets client API
... used, client IP encoded in ticket matches, timestamp in ticket is recent, etc). Here is a summary of WebSocket security information: https://devcenter.heroku.com/articles/websocket-security
Basic authentication was formerly an option but this has been deprecated and modern browsers don't send the ...
How to use sidebar with the keyboard in Sublime Text 2 and 3?
...trl + b will show/hide the sidebar. Make sure you hit K and B in the right order
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nginx error “conflicting server name” ignored [closed]
...you're running a Linux, and you're using gEdit to edit your files. In the /etc/nginx/sites-enabled, it may have left a temp file e.g. default~ (watch the ~).
Depending on your editor, the file could be named .save or something like it. Just run $ ls -lah to see which files are unintended to be the...
nginx 基础配置全攻略，入门这一篇就够了！ - 更多技术 - 清泛网 - 专注C/C...
...ingfun.com$1 permanent;
}
# ssl证书地址
ssl_certificate /etc/nginx/ssl/www.tsingfun.com.pem; # pem文件的路径
ssl_certificate_key /etc/nginx/ssl/www.tsingfun.com.key; # key文件的路径
root /var/www/html;
index index.html index.htm;
location / {
proxy_pass ...
How to debug JavaScript / jQuery event bindings with Firebug or similar tools?
...has color-coded highlights for different types of events (mouse, keyboard, etc.). When you hover over them, it shows the body of the event handler, how it was attached, and the file/line number (on WebKit and Opera). You can also trigger the event manually.
It can't find every event because there's...
What's wrong with using == to compare floats in Java?
...t there is no exact way to represent most decimal numbers like .1, .2, .3, etc. All you can do is approximate in binary. The system does a little fudge-rounding when the numbers print so that it displays .1 instead of .10000000000001 or .999999999999 (which are probably just as close to the stored...
How to check if PHP array is associative or sequential?
...structures/array-in-programming I'm not sure is the key must be ascending order? (0, 1, ...)
– vee
May 21 '19 at 16:42
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