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Is there a way to instantiate objects from a string holding their class name?
...flexible: http://www.boost.org/doc/libs/1_54_0/libs/functional/factory/doc/html/index.html
My preference though is to generate wrapper classes which hide the mapping and object creation mechanism. The common scenario I encounter is the need to map different derived classes of some base class to key...
How to properly add cross-site request forgery (CSRF) token using PHP
... token. The problem I'm having is that the token is only showing up in the HTML "value" some of the time. The rest of the time, the value is empty. Here is the code I am using on the AJAX form:
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How to get a pixel's x,y coordinate color from an image?
... @pst said above. Check out this answer for a good example:
getPixel from HTML Canvas?
Some code that would serve you specifically as well:
var imgd = context.getImageData(x, y, width, height);
var pix = imgd.data;
for (var i = 0, n = pix.length; i < n; i += 4) {
console.log pix[i+3]
}
Th...
What is the ultimate postal code and zip regex?
...o a real check by an external service like geonames.org/export/ws-overview.html
– SimonSimCity
Sep 21 '11 at 14:51
3
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What are best practices that you use when writing Objective-C and Cocoa? [closed]
...bly still good;
http://web.utk.edu/~jplyon/sqlite/SQLite_optimization_FAQ.html
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edited May 23 '17 at 11:54
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CSS z-index paradox flower
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JS Fiddle
HTML
<div class="item i1">1</div>
<div class="item i2">2</div>
<div class="item i3">3</div>
<div class="item i4">4</div>
<div id="five">5</div>
<div class="item2...
Speed up the loop operation in R
...allelization (http://cran.r-project.org/web/views/HighPerformanceComputing.html) or even GPU-based solutions (gpu-tools).
Links to other guidance
http://www.noamross.net/blog/2013/4/25/faster-talk.html
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Emacs mode for Stack Overflow's markdown
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If you have as-external installed (or nxhtml-mode which installs as-external) it might completely ignore your adjustment of auto-mode-alist, the variable you want to modify then is as-external-alist.
– quodlibetor
May 1 '12 at...
What's the difference between an exclusive lock and a shared lock?
...quest read locks.
More on that : http://www.gnu.org/software/libc/manual/html_node/File-Locks.html
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Is there any way to put malicious code into a regular expression?
...dd regular expression search capability to my public web page. Other than HTML encoding the output, do I need to do anything to guard against malicious user input?
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