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How can I check for NaN values?

float('nan') results in Nan (not a number). But how do I check for it? Should be very easy, but I cannot find it. 17 Answe...
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Git diff against a stash

... See the most recent stash: git stash show -p See an arbitrary stash: git stash show -p stash@{1} From the git stash manpages: By default, the command shows the diffstat, but it will accept any format known to git diff (e.g., git stash show -p...
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What are all the valid self-closing elements in XHTML (as implemented by the major browsers)?

...;</br> all should work just fine. If they don't, then you have HTML with inappropriately added XHTML DOCTYPE. DOCTYPE does not change how document is interpreted. Only MIME type does. W3C decision about ignoring DOCTYPE: The HTML WG has discussed this issue: the intention was to allow o...
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Count(*) vs Count(1) - SQL Server

...e is a noticeable difference in performance or if this is just a legacy habit that has been brought forward from days gone past? ...
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phantomjs not waiting for “full” page load

... Another approach is to just ask PhantomJS to wait for a bit after the page has loaded before doing the render, as per the regular rasterize.js example, but with a longer timeout to allow the JavaScript to finish loading additional resources: page.open(address, function (...
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Why can't a text column have a default value in MySQL?

If you try to create a TEXT column on a table, and give it a default value in MySQL, you get an error (on Windows at least). I cannot see any reason why a text column should not have a default value. No explanation is given by the MySQL documentation. It seems illogical to me (and somewhat frustrati...
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Are there any cases when it's preferable to use a plain old Thread object instead of one of the newe

I see a lot of people in blog posts and here on SO either avoiding or advising against the usage of the Thread class in recent versions of C# (and I mean of course 4.0+, with the addition of Task & friends). Even before, there were debates about the fact that a plain old thread's functionality c...
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Why would one use the Publish/Subscribe pattern (in JS/jQuery)?

...cribe pattern (in JS/jQuery), but I'm having a hard time getting to grips with why one would use this pattern over 'normal' JavaScript/jQuery. ...
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Java Programming - Where should SQL statements be stored? [closed]

Where should an JDBC-compliant application store its SQL statements and why? 15 Answers ...
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How to redirect the output of a PowerShell to a file during its execution

... Maybe Start-Transcript would work for you. First stop it if it's already running, then start it, and stop it when done. $ErrorActionPreference="SilentlyContinue" Stop-Transcript | out-null $ErrorActionPreference = "Continue" Start-Transcript -path C:\output.txt -append # Do so...