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Cross-platform way of getting temp directory in Python
...d() # reads data back from the file
f.close() # temporary file is automatically deleted here
For completeness, here's how it searches for the temporary directory, according to the documentation:
The directory named by the TMPDIR environment variable.
The directory named by the TEMP environment v...
Parsing XML with namespace in Python via 'ElementTree'
...tTree is not too smart about namespaces. You need to give the .find(), findall() and iterfind() methods an explicit namespace dictionary. This is not documented very well:
namespaces = {'owl': 'http://www.w3.org/2002/07/owl#'} # add more as needed
root.findall('owl:Class', namespaces)
Prefixes a...
Creating JS object with Object.create(null)?
...into a case where there are keys in the map that you never inserted. For example, if you did a lookup on toString, you would find a function, even though you never put that value there. You can work around that like this:
if (Object.prototype.hasOwnProperty.call(p, 'toString')) {
// we actually ...
How to decode HTML entities using jQuery?
...odedString;
return textArea.value;
}
console.log(decodeEntities('1 & 2')); // '1 & 2'
This works similarly to the accepted answer, but is safe to use with untrusted user input.
Security issues in similar approaches
As noted by Mike Samuel, doing this with a <div> ...
Retrieve the position (X,Y) of an HTML element relative to the browser window
...ntains a focused input element and the virtual keyboard has slid up. For example, if the actual offset from the window's top is 200px, it would report it as 420px, where 220px is the height of the virtual keyboard. If you set element's position: absolute and position it at the same position as if fi...
When to wrap quotes around a shell variable?
...hat you expect the values to be, otherwise your bugs will be worse. For example, you are sure that none of your paths have spaces, so you think you can write cp $source1 $source2 $dest, but if for some unexpected reason dest doesn't get set, the third argument just disappears, and it will silently ...
How to have the cp command create any necessary folders for copying a file to a destination [duplica
...iable way to do this would be to combine mkdir and cp:
mkdir -p /foo/bar && cp myfile "$_"
As an aside, when you only need to create a single directory in an existing hierarchy, rsync can do it in one operation. I'm quite a fan of rsync as a much more versatile cp replacement, in fact:
...
Target elements with multiple classes, within one rule
...es to elements that have either the blue-border or background class, for example:
<div class="blue-border">Hello</div>
<div class="background">World</div>
<div class="blue-border background">!</div>
would all get a blue border and white background applied to th...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock'
...permission issue. Running sudo chown -R _mysql:mysql /usr/local/var/mysql && sudo brew services restart mysql@5.7 solved the issue
– FooBar
Oct 26 '18 at 14:08
...
Is it possible to serialize and deserialize a class in C++?
...e it, here.
The only native way to do it is to use streams. That's essentially all the Boost::serialization library does, it extends the stream method by setting up a framework to write objects to a text-like format and read them from the same format.
For built-in types, or your own types with op...