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Order Bars in ggplot2 bar graph
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Take a full page screenshot with Firefox on the command-line
...Command+K on macOS)
type :screenshot or :screenshot --fullpage
Find out more regarding screenshots and other features
For Firefox versions < 60:
Press Shift+F2 or go to Tools > Web Developer > Developer Toolbar to open a command line. Write:
screenshot
and press Enter in order to...
What's your most controversial programming opinion?
...ed people will never become truly good programmers unless they treat it as more than a job. Meaning that they do little projects on the side, or just mess with lots of different languages and ideas in their spare time.
(Note: I'm not saying good programmers do nothing else than programming, but the...
Can I see changes before I save my file in Vim?
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How to get UITableView from UITableViewCell?
...leView;
@end
This is a much better design, though it will require a bit more code refactoring to use in existing projects. In your tableView:cellForRowAtIndexPath use SOUITableViewCell as your cell class or make sure your custom cell class is subclassed from SOUITableViewCell and assign the tabl...
Array.Copy vs Buffer.BlockCopy
...ameters to Buffer.BlockCopy are byte-based rather than index-based, you're more likely to screw up your code than if you use Array.Copy, so I would only use Buffer.BlockCopy in a performance-critical section of my code.
shar...
My Understanding of HTTP Polling, Long Polling, HTTP Streaming and WebSockets
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There are more differences than the ones you have identified.
Duplex/directional:
Uni-directional: HTTP poll, long poll, streaming.
Bi-direcitonal: WebSockets, plugin networking
In order of increasing latency (approximate):
WebS...
Is “else if” a single keyword?
...oth if and else separately and there is no else if keyword. We can find a more accessible list of C++ keywords by going to cppreferences section on keywords.
The grammar in section 6.4 also makes this clear:
selection-statement:
if ( condition ) statement
if ( condition ) statement else stateme...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
... a generator (coroutine) using yield from - Part 1
Now let's do something more interesting. Let's create a coroutine called writer that accepts data sent to it and writes to a socket, fd, etc.
def writer():
"""A coroutine that writes data *sent* to it to fd, socket, etc."""
while True:
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