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Volatile Vs Atomic [duplicate]
...ariable is atomic.
Notably, however, an operation that requires more than one read/write -- such as i++, which is equivalent to i = i + 1, which does one read and one write -- is not atomic, since another thread may write to i between the read and the write.
The Atomic classes, like AtomicInteger ...
Script to get the HTTP status code of a list of urls?
...l -o /dev/null --silent --head --write-out "%{http_code} $LINE\n" "$LINE"
done < url-list.txt
(Eagle-eyed readers will notice that this uses one curl process per URL, which imposes fork and TCP connection penalties. It would be faster if multiple URLs were combined in a single curl, but there i...
What are the benefits of learning Vim? [closed]
...g
vi is guaranteed to exist on all Unix systems and exists on most Linux ones as well. That kind of broad coverage makes learning it worth it.
It's much quicker to use vi for a sudo edit:
$ sudo vi
Also, GMail uses vi-ish commands for selecting & moving emails around!
You don't have to be...
SqlDataAdapter vs SqlDataReader
...useful for updating back to the database
On the other hand, it:
Only has one record in memory at a time rather than an entire result set (this can be HUGE)
Is about as fast as you can get for that one iteration
Allows you start processing results sooner (once the first record is available). For so...
How do you properly use namespaces in C++?
...
One advantage of "using namespace" at the function level as you suggest rather than at the .cpp file level or namespace {} block level within the .cpp is that it helps greatly with single-compilation-unit builds. "using names...
Import package.* vs import package.SpecificType [duplicate]
...ference regarding overhead to write an import loading all the types within one package ( import java.* ); than just a specific type (i.e. import java.lang.ClassLoader )? Would the second one be a more advisable way to use than the other one?
...
Sourcemaps off by one line in Chrome, with Ruby on Rails, Webpack, and React JS
... by Webpack using the inline-source-map configuration setting are off by one line when I use the Chrome devtools debugger.
Webpack is set up inside a Ruby on Rails application to generate a concatenated, unminified JavaScript file composed of a couple dozen modules. Most of those modules are Reac...
Explaining Apache ZooKeeper
...ted between multiple nodes (this set of nodes is called an "ensemble") and one client connects to any of them (i.e., a specific "server"), migrating if one node fails; as long as a strict majority of nodes are working, the ensemble of ZooKeeper nodes is alive. In particular, a master node is dynamic...
Should the folders in a solution match the namespace?
...lects the folder hierarchy.
The classes will be easier to find and that alone should be reasons good enough.
The rules we follow are:
Project/assembly name is the same as the root namespace, except for the .dll ending
Only exception to the above rule is a project with a .Core ending, the .Core i...
Are there any O(1/n) algorithms?
...u can construct an arbitrary algorithm to fulfill this, e.g. the following one:
def get_faster(list):
how_long = (1 / len(list)) * 100000
sleep(how_long)
Clearly, this function spends less time as the input size grows … at least until some limit, enforced by the hardware (precision of t...