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What are copy elision and return value optimization?
...If you want to avoid possible copy elision, use -fno-elide-constructors.
Now almost all compilers provide copy elision when optimisation is enabled (and if no other option is set to disable it).
Conclusion
With each copy elision, one construction and one matching destruction of the copy are om...
Named colors in matplotlib
...via the 'xkcd:' prefix:
plt.plot([1,2], lw=4, c='xkcd:baby poop green')
Now you have access to a plethora of named colors!
Tableau
The default Tableau colors are available in matplotlib via the 'tab:' prefix:
plt.plot([1,2], lw=4, c='tab:green')
There are ten distinct colors:
HTML
You ...
What is the difference between the $parse, $interpolate and $compile services?
...king use of $interpolate (among other things) to do its job.
$interpolate knows how to process a string with embedded interpolation expressions, ex.: /path/{{name}}.{{extension}}. In other words it can take a string with interpolation expressions, a scope and turn it into the resulting text. One can...
How to detect incoming calls, in an Android device?
...e finished. Actually displaying it is your job, because I have no way of knowing how you want that done.
– Gabe Sechan
Feb 27 '14 at 19:00
3
...
Why am I suddenly getting a “Blocked loading mixed active content” issue in Firefox?
... up a few things. To quote the most relevant bit:
Mixed Active Content is now blocked by default in Firefox 23!
What is Mixed Content?
When a user visits a page served over HTTP, their connection is open for eavesdropping and man-in-the-middle (MITM) attacks. When a user visits a page served over H...
URL encoding the space character: + or %20?
...le the "+" character in the path fragment part can be left unencoded.
Now in the query part, spaces may be encoded to either "+" (for backwards compatibility: do not try to search for it in the URI standard) or "%20" while the "+" character (as a result of this ambiguity) has to be escaped to "...
HTTP POST with URL query parameters — good idea or not? [closed]
...
I don't think his answer is strictly correct. If you know the URL parameters for your form post when the HTML page is sent to the client, you can tack those URL parameters on to the form's action attribute, otherwise JavaScript can set the URL parameters when the form is submitt...
Select by partial string from a pandas DataFrame
...annot index with vector containing NA / NaN values"
...and would like to know more about what methods should be preferred over others.
(P.S.: I've seen a lot of questions on similar topics, I thought it would be good to leave this here.)
Friendly disclaimer, this is post is long.
Basic Substring...
Maven2 property that indicates the parent directory
... </execution>
</executions>
</plugin>
<!-- Now, I can load the properties file using the new 'env-properties-file-by-groovy' property. -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>properties-maven-plugin</artifact...
Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
... closing tags match a previous opening tag. To understand it, you need to know which element is being closed. Without any means to "remember" what opening tags you've seen, no chance.
Note however that most "regex" libraries actually permit more than just the strict definition of regular expression...