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What are the differences between the threading and multiprocessing modules?
...sing module. (You can use multiprocessing.dummy to get most of the missing API on top of threads, or you can use higher-level modules like concurrent.futures and not worry about it.)
* It's not actually Python, the language, that has this issue, but CPython, the "standard" implementation of that...
Text size and different android screen sizes
...omplete.
Note: Remember that all the figures used with these new size APIs are
density-independent pixel (dp) values and your layout dimensions
should also always be defined using dp units, because what you care
about is the amount of screen space available after the system
accounts for...
Hiding the scroll bar on an HTML page
...alesuada ut ac dolor. Fusce non arcu vel ligula
fermentum sodales a quis sapien. Sed imperdiet justo sit amet venenatis
egestas. Integer vitae tempor enim. In dapibus nisl sit amet purus congue
tincidunt. Morbi tincidunt ut eros in rutrum. Sed quam erat, faucibus
vel tempor et, elementum at tort...
Why use prefixes on member variables in C++ classes
...e careful with using a leading underscore. A leading underscore before a capital letter in a word is reserved.
For example:
_Foo
_L
are all reserved words while
_foo
_l
are not. There are other situations where leading underscores before lowercase letters are not allowed. In my specific cas...
Referring to the null object in Python
...ome aware of it, if their purpose is to extend or supplement the library's API.
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Big O, how do you calculate/approximate it?
...oop, as function calls can do > O(1) work themselves. In the C standard APIs for instance, bsearch is inherently O(log n), strlen is O(n), and qsort is O(n log n) (technically it has no guarantees, and quicksort itself has a worst case complexity of O(n²), but assuming your libc author isn't a m...
What are the effects of exceptions on performance in Java?
...ating that a method might fail. There's no other way to tell from just the API which methods are expected to always (mostly) work and which are expected to report failure.
Exceptions are safer than sentinels, faster than result objects, and less surprising than either. I'm not suggesting that try/c...
How do I uniquely identify computers visiting my web site?
...ique in our sample.
By observing returning visitors, we estimate how rapidly browser fingerprints might change over time. In our sample, fingerprints changed quite
rapidly, but even a simple heuristic was usually able to guess when a fingerprint was an “upgraded” version of a previously o...
What does the Java assert keyword do, and when should it be used?
... I don't agree. Many of my assertions are used to make sure my API is getting called correctly. For example, I might write a private method that should only be called when an object holds a lock. If another developer calls that method from part of the code that doesn't lock the object, t...
Pass props to parent component in React.js
...u can avoid any hookup with Child altogether.
JSX has a spread attributes API I often use on components like Child. It takes all the props and applies them to a component. Child would look like this:
var Child = React.createClass({
render: function () {
return <a {...this.props}> {this...