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How to estimate how much memory a Pandas' DataFrame will need?
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If you know the dtypes of your array then you can directly compute the number of bytes that it will take to store your data + some for the Python objects themselves. A useful attribute of numpy arrays is nbytes. You can get the numbe...
How to serve static files in Flask
...rrassing. I've got an application that I threw together in Flask and for now it is just serving up a single static HTML page with some links to CSS and JS. And I can't find where in the documentation Flask describes returning static files. Yes, I could use render_template but I know the data i...
Automatically start forever (node) on system restart
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@DanNissenbaum Thanks for answering. I am now using PM2 which works beautifully. Instructions: digitalocean.com/community/tutorials/…
– Alex
Jun 22 '15 at 14:59
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How to add footnotes to GitHub-flavoured Markdown?
..., e.g. <sup>1</sup>.
¹Of course this isn't ideal, as you are now responsible for maintaining the numbering of your footnotes. It works reasonably well if you only have one or two, though.
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How to generate a random int in C?
... bigger reason is that the properties of rand() and functions like it are known best for the use case where they are seeded exactly once per run, and not on every single call. Depending on "randomness" with untested or unproven properties leads to trouble.
– RBerteig
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Deleting elements from std::set while iterating
...M. It does in C++11. In C++17, it takes iterator (const_iterator in C++11) now.
– tartaruga_casco_mole
Jan 23 '18 at 4:15
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What does it mean when an HTTP request returns status code 0?
...a webserver?
XMLHttpRequest status = 0 and XMLHttpRequest statusText = unknown can help you if you are not running your script on a webserver.
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Set element focus in angular way
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That's very nice, and has been working well for me. But now I have a set of inputs using ng-repeat, and I only want to set the focus function for the first one. Any idea how I could conditionally set a focus function for <input> based on $index for example?
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Running unittest with typical test directory structure
... Python 2.7+ (which is backported as unittest2 for Python 2.6 and earlier) now has test discovery built-in, so nose is no longer necessary if you want automated test discovery: your user instructions can be as simple as python -m unittest discover.
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Bootstrap 3 Flush footer to bottom. not fixed
... not have to deal with fixed height issue which is an obsolete solution by now...this solution works for bootstrap 3 and 4 whichever you using.
<body class="Site">
<header>…</header>
<main class="Site-content">…</main>
<footer>…</footer>
</bo...