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Python Infinity - Any caveats?
...back (most recent call last):
File "<stdin>", line 1, in ?
OverflowError: (34, 'Numerical result out of range')
The inf value is considered a very special value with unusual semantics, so it's better to know about an OverflowError straight away through an exception, rather than having an i...
www-data permissions?
So I have a directory in /var/www (called cake) and I need to allow www-data to write to it, but I also want to write to it (without having to use sudo). I'm afraid to change the permissions to 777 in case some other user on my machine (or a hacker) attempts to modify files in that directory. How do...
What exactly does an #if 0 … #endif block do?
...y:
/*
foo();
bar(x, y); /* x must not be NULL */
baz();
*/
Bzzt. Syntax error! Why? Because block comments do not nest, and so (as you can see from SO's syntax highlighting) the */ after the word "NULL" terminates the comment, making the baz call not commented out, and the */ after baz a syntax e...
How can I pass a member function where a free function is expected?
...e preferable than using a void* interface as they remove the potential for errors due to a cast to the wrong type.
To clarify how to use a function pointer to call a member function, here is an example:
// the function using the function pointers:
void somefunction(void (*fptr)(void*, int, int), v...
Python ElementTree module: How to ignore the namespace of XML files to locate matching element when
...elated code outside the with block. I ended up creating this after getting errors in unrelated libraries after using the version by ericspod which also happened to use expat.
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iOS 7's blurred overlay effect using CSS?
...e demo no longer works. The content goes below the phone, and I get the JS error "TypeError: sheet.addRule is not a function"
– BoffinBrain
Apr 29 '15 at 10:10
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How do synchronized static methods work in Java and can I use it for loading Hibernate entities?
...scarRyz
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Basic http file downloading and saving to disk in python?
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For Python3+ URLopener is deprecated.
And when used you will get error as below:
url_opener = urllib.URLopener() AttributeError: module 'urllib' has no
attribute 'URLopener'
So, try:
import urllib.request
urllib.request.urlretrieve(url, filename)
...
How to define object in array in Mongoose schema correctly with 2d geo index
...itization.
(req, res, next) => {
// Extract the validation errors from a request.
const errors = validationResult(req);
if (!errors.isEmpty()) {
// There are errors. Render form again with sanitized values/error messages.
res.status(400).send({...
Checking a Python module version at runtime
...
pkg_resources link is an Error 404
– gerrit
Nov 22 '19 at 16:00
For ...