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Is optimisation level -O3 dangerous in g++?
...oduction software ships with O2 which means O3 will get less attention wrt testing and bug fixes.
Think of it this way: O3 adds more transformations on top of O2, which adds more transformations on top of O1. Statistically speaking, more transformations means more bugs. That's true for any compile...
How do you remove the root CA certificate that fiddler installs
... if you've put that cert on multiple devices (fairly common during network testing), and you only want to remove it on one (source - http://www.cantoni.org/2013/11/06/capture-android-web-traffic-fiddler):
Go to the Security tab in settings
Tap Trusted credentials, then select the User tab
Tap on ...
jQuery UI accordion that keeps multiple sections open?
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Here's the jsFiddle I used to test it jsfiddle.net/txo8rx3q/1 I also added some CSS to stop an opened accordion section looking selected when it's expanded
– Matthew Lock
Sep 2 '14 at 0:07
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Using only CSS, show div on hover over
...information and div.popup then see Hover Over The Popup below.
It has been tested and works as expected in Opera 12.16 Internet Explorer 10.0.9200, Firefox 18.0 and Google Chrome 28.0.15.
Hover Over The Popup
As additional information. When the popup contains information that you might want to c...
Docker: adding a file from a parent directory
.../
COPY src/ src/
Command used to build the docker image
docker build -t test:latest -f setup/docker/Dockerfile .
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How to set up Spark on Windows?
...ce.
You can pretty much follow this guide: http://spark.apache.org/docs/latest/building-spark.html
Download and install Maven, and set MAVEN_OPTS to the value specified in the guide.
But if you're just playing around with Spark, and don't actually need it to run on Windows for any other reason th...
What is JavaScript garbage collection?
...ever be collected, and would eventually cause the OS to become unstable in test apps that looped to create crashes. In practice these leaks are usually small, but to keep your code clean you should delete the JavaScript reference to the DOM object.
Usually it is a good idea to use the delete keywo...
ASP.NET MVC partial views: input name prefixes
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@IvanZlatev Thanks. I will correct the post after testing it.
– Mahmoud Moravej
Aug 22 '12 at 7:25
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Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie
... find out where some point of a view was in relation to its superview - to test if a view was moving off the screen, for example:
CGPoint originInSuperview = [superview convertPoint:CGPointZero fromView:subview];
The "receiver" is a standard objective-c term for the object that is receiving the m...
Determine device (iPhone, iPod Touch) with iOS
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Latest update - June 2020: Added iPad Pro 11 2020 (2nd generation), iPad Pro 12.9 2020 (4th generation), Apple Watch 5
Previous update - October 2019: Added iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPad (7th generation)
Sw...