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Why covariance and contravariance do not support value type

...or not. You might want to read Eric Lippert's blog post on representation and identity for more on this topic in general. EDIT: Having reread Eric's blog post myself, it's at least as much about identity as representation, although the two are linked. In particular: This is why covariant and ...
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How to make JavaScript execute after page load?

... Note that the last option is a better way to go since it is unobstrusive and is considered more standard. share | improve this answer | follow | ...
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parseInt(null, 24) === 23… wait, what?

Alright, so I was messing around with parseInt to see how it handles values not yet initialized and I stumbled upon this gem. The below happens for any radix 24 or above. ...
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How can I fix WebStorm warning “Unresolved function or method” for “require” (Firefox Add-on SDK)

...project or enable Node.js Globals predefined library in Settings/Languages and Frameworks/JavaScript/Libraries. (Edited settings path by @yurik) In WebStorm 2016.x-2017.x: make sure that the Node.js Core library is enabled in Settings (Preferences) | Languages & Frameworks | Node.js and NPM I...
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What Makes a Method Thread-safe? What are the rules?

...ere overall rules/guidelines for what makes a method thread-safe? I understand that there are probably a million one-off situations, but what about in general? Is it this simple? ...
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force client disconnect from server with socket.io and nodejs

Is there any way to disconnect a client with SocketIO, and literally close the connection? So if someone is connected to my server, and I want to close the connection between them and my server, how would I go about doing that? ...
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EF Code First “Invalid column name 'Discriminator'” but no inheritance

...he CREATE TABLE statement). It has a primary key, a couple of foreign keys and nothing special about it. I have many tables in my database similar to that one, but for some reason, this table ended up with a "Discriminator" column on the EF Proxy Class. ...
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Show Youtube video source into HTML5 video tag?

... The expiration and fact that it only works in a specific browser makes this solution pretty useless. – pjv Nov 5 '11 at 21:04 ...
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npm global path prefix

...Homebrew). So: npm config set prefix /usr/local if it's something else, and Don't use sudo with npm! According to the jslint docs, you should just be able to npm install it. If you installed npm as sudo (sudo brew install), try reinstalling it with plain ol' brew install. Homebrew is supposed t...
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How to check BLAS/LAPACK linkage in NumPy and SciPy?

I am builing my numpy/scipy environment based on blas and lapack more or less based on this walk through. 5 Answers ...