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Where do “pure virtual function call” crashes come from?
I sometimes notice programs that crash on my computer with the error: "pure virtual function call".
8 Answers
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Binding arrow keys in JS/jQuery
...go about binding a function to left and right arrow keys in Javascript and/or jQuery? I looked at the js-hotkey plugin for jQuery (wraps the built-in bind function to add an argument to recognize specific keys), but it doesn't seem to support arrow keys.
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Why is Visual Studio 2013 very slow?
I'm running Visual Studio 2013 Pro (RTM version) on my formatted PC (Windows 8.1 fresh install).
31 Answers
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Superscript in CSS only?
...read the other answers here, particularly those by paulmurray and cletus, for useful information.
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Create a branch in Git from another branch
...you've posted, have a look at Git Flow.
It's a set of scripts he created for that workflow.
But to answer your question:
$ git checkout -b myFeature dev
Creates MyFeature branch off dev. Do your work and then
$ git commit -am "Your message"
Now merge your changes to dev without a fast-forwar...
How do I use itertools.groupby()?
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IMPORTANT NOTE: You have to sort your data first.
The part I didn't get is that in the example construction
groups = []
uniquekeys = []
for k, g in groupby(data, keyfunc):
groups.append(list(g)) # Store group iterator as ...
Formatting a number with leading zeros in PHP [duplicate]
...they are not positive numbers. i.e. 08 would be written as such as a date, or something which expects a positive double digit number (Bank Account sort code etc). Please correct me if I'm wrong, but as far as I know, there is no real life instance of requiring a leading zero on a negative value?
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Calculating Pearson correlation and significance in Python
I am looking for a function that takes as input two lists, and returns the Pearson correlation , and the significance of the correlation.
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A good book for learning D3.js [closed]
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As @Autio already mentioned, there are the tutorials from Scott Murray on his website.
You will also note that on his site, he has a link to his recent d3 book,
Interactive Data Visualization for the Web.
However, that book is now available online for free, along wit...
How do I implement a callback in PHP?
...ble" interchangeably, however, "callback" traditionally refers to a string or array value that acts like a function pointer, referencing a function or class method for future invocation. This has allowed some elements of functional programming since PHP 4. The flavors are:
$cb1 = 'someGlobalFunctio...