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Get pandas.read_csv to read empty values as empty string instead of nan
...e it's missing this flag. For this example, you could use pandas.read_csv('test.csv',na_values=['nan'], keep_default_na=False).
– Michael Delgado
Sep 30 '15 at 20:17
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SQL join: selecting the last records in a one-to-many relationship
...
This is an example of the greatest-n-per-group problem that has appeared regularly on StackOverflow.
Here's how I usually recommend solving it:
SELECT c.*, p1.*
FROM customer c
JOIN purchase p1 ON (c.id = p1.customer_id)
LEFT OUTER JOIN purchase p2 ON (...
On design patterns: When should I use the singleton?
... A print spooler does not meet the criteria. You may want a test print spooler that doesn't actually print, for testing.
– user253751
Jul 1 at 15:09
add a comme...
How do I work around JavaScript's parseInt octal behavior?
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it's not part of the ECMAscript standard. I'm testing on JSDB which uses Spidermonkey 1.7 (=Firefox JS engine), and complains "08 is not a legal ECMA-262 octal constant"
– Jason S
May 11 '09 at 22:25
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Do spurious wakeups in Java actually happen?
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I read the post and gave me an idea about having unit tests for testing one application's conformance to the looping-wait paradigm by waking it up randomly/deterministically. Or is it already available somewhere?
– akarnokd
Jun 26 '09 at 19...
vs.
...c mind.
This is how you include a PDF with object:
<object data="data/test.pdf" type="application/pdf" width="300" height="200">
alt : <a href="data/test.pdf">test.pdf</a>
</object>
If you really need the inline PDF to show in almost every browser, as older browsers und...
How to check if character is a letter in Javascript?
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The code only tests whether the character is one of the basic letter from a to z (very few languages are written using only those letters). This is very different from the Java function that was mentioned.
– Jukka K. ...
Java OCR implementation [closed]
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We have tested a few OCR engines with Java like Tesseract,Asprise, Abbyy etc. In our analysis, Abbyy gave the best results.
share
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iOS 7 sizeWithAttributes: replacement for sizeWithFont:constrainedToSize
...ngRect(
with: CGSize(width: width, height: CGFloat.greatestFiniteMagnitude),
options: NSStringDrawingOptions.usesLineFragmentOrigin,
attributes: attributes as [NSAttributedString.Key : Any], context: nil)
...
express.js - single routing handler for multiple routes in a single line
...ks in Express 3.x. Here's an example of something to try:
app.get(
['/test', '/alternative', '/barcus*', '/farcus/:farcus/', '/hoop(|la|lapoo|lul)/poo'],
function ( request, response ) {
}
);
From inside the request object, with a path of /hooplul/poo?bandle=froo&bandle=pee&b...