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MySQL: Fastest way to count number of rows
...tely after the data selecting query.
In conclusion, everything actually comes down to how many entries you have and what is in the WHERE statement. You should really pay attention on how indexes are being used, when there are lots of rows (tens of thousands, millions, and up).
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How can an html element fill out 100% of the remaining screen height, using css only?
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Internet Explorer 11 disable “display intranet sites in compatibility view” via meta tag not working
...or over 6 months
were I have been using the below html5 doctype and edge compatibility meta tag to force Internet Explorer to not emulate an older browser version, and this has worked ok.
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How to reference constants in EL?
... EL (but uses JSP with Spring).
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<spring:eval var="constant" expression="T(com.example.Constants).CONSTANT"/>
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How do I get the fragment identifier (value after hash #) from a URL?
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You may do it by using following code:
var url = "www.site.com/index.php#hello";
var hash = url.substring(url.indexOf('#')+1);
alert(hash);
SEE DEMO
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how does multiplication differ for NumPy Matrix vs Array classes?
The numpy docs recommend using array instead of matrix for working with matrices. However, unlike octave (which I was using till recently), * doesn't perform matrix multiplication, you need to use the function matrixmultipy(). I feel this makes the code very unreadable.
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Dynamically generating a QR code with PHP [closed]
...s://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=http%3A%2F%2Fwww.google.com%2F&choe=UTF-8
300x300 is the size of the QR image you want to generate,
the chl is the url-encoded string you want to change into a QR code, and
the choe is the (optional) encoding.
The link, above, gi...
Explanation of [].slice.call in javascript?
... converting a DOM NodeList into a regular array, but I must admit, I don't completely understand how it works:
8 Answers
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make an html svg object also a clickable link
...your SVG (right before the closing </svg> tag):
<a xmlns="http://www.w3.org/2000/svg" id="anchor" xlink:href="/" xmlns:xlink="http://www.w3.org/1999/xlink" target="_top">
<rect x="0" y="0" width="100%" height="100%" fill-opacity="0"/>
</a>
Then just amend the link to s...
How to fix 'sudo: no tty present and no askpass program specified' error?
I am trying to compile some sources using a makefile. In the makefile there is a bunch of commands that need to be ran as sudo .
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