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What is the relative performance difference of if/else versus switch statement in Java?
...first to determine where the slow spots are. Premature optimization is the root of all evil!
Nevertheless, it's possible to talk about the relative performance of switch vs. if/else with the Java compiler optimizations. First note that in Java, switch statements operate on a very limited domain -- ...
Can you use if/else conditions in CSS?
...sers supporting them).
With them you could do something along the line:
:root {
--main-bg-color: brown;
}
.one {
background-color: var(--main-bg-color);
}
.two {
background-color: black;
}
Finally, you can preprocess your stylesheet with your favourite server-side language. If you're u...
How to keep environment variables when using sudo
...do rule that allows the running of wget -- Example: <username> ALL=(root) NOPASSWD:SETENV: <path to wget>
– John Bowers
Sep 16 '14 at 16:13
...
How to rename a file using Python
...can use the backported version found here
Let's assume you are not in the root path (just to add a bit of difficulty to it) you want to rename, and have to provide a full path, we can look at this:
some_path = 'a/b/c/the_file.extension'
So, you can take your path and create a Path object out of...
Find the most common element in a list
...me (to get the L.index of every item). While premature optimization is the root of all evil in programming, deliberately picking an O(N squared) approach when an O(N log N) one is available just goes too much against the grain of scalability!-)
Finally, for those who prefer "oneliners" to clarity a...
Using arrays or std::vectors in C++, what's the performance gap?
...all efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%".
(Thanks to metamorphosis for the full quote)
Don't use a C array instead of a vector (or whatever) just because you believe it's faster as i...
How To Accept a File POST
...esponseException(HttpStatusCode.UnsupportedMediaType);
}
string root = System.Web.HttpContext.Current.Server.MapPath("~/App_Data/uploads");
var provider = new MultipartFormDataStreamProvider(root);
var task = request.Content.ReadAsMultipartAsync(provider).
ContinueWith...
Growing Amazon EBS Volume sizes [closed]
...steps you can grow your EBS volume and keep your data (this is not for the root volume). For simplicity I am suggesting to use AWS consule to create snapshot,... you can do that using AWS command line tools too.
We are not touching the root volume here.
Goto your AWS console:
Shutdown your insta...
What are the risks of running 'sudo pip'?
... sudo. In other words, you run arbitrary Python code from the Internet as root. If someone puts up a malicious project on PyPI and you install it, you give an attacker root access to your machine. Prior to some recent fixes to pip and PyPI, an attacker could also run a man in the middle attack to i...
Is there an interpreter for C? [closed]
... answered Apr 6 '12 at 14:53
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