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How does LMAX's disruptor pattern work?
...ueue.util.MutableLong;
public class Sample {
public static void main(String[] args) throws InterruptedException {
final Queue<MutableLong> queue = new AtomicQueue<MutableLong>(1024, MutableLong.class);
Thread consumer = new Thread() {
@Override
...
Creating a daemon in Linux
...are necessary, these can be encoded by prefixing individual log lines with strings like "<4>" (for log level 4 "WARNING" in the syslog priority scheme), following a similar style as the Linux kernel's printk() level system. For details, see sd-daemon(3) and systemd.exec(5).
To learn mor...
What Does 'Then' Really Mean in CasperJS
...
require('utils').dump(casper.steps.map(function(step) {
return step.toString();
}));
That gives:
$ casperjs test-steps.js
[
"function step1() { this.echo('this is step one'); }",
"function step2() { this.echo('this is step two'); }",
"function _step() { this.open(location, settin...
Should I pass an std::function by const-reference?
...ought using const-references where they should be used is common practice (strings and vectors come to mind).
– Sven Adbring
Aug 21 '13 at 19:14
...
Checking if an Android application is running in the background
...ckage.MyApplication"
android:icon="@drawable/icon"
android:label="@string/app_name" >
Add onPause and onResume to every Activity in the project (you may create a common ancestor for your Activities if you'd like to, but if your activity is already extended from MapActivity/ListActivity ...
Could someone explain the pros of deleting (or keeping) unused code?
...urprising ways: reflection, dynamically calling routines concatenated from strings, eval, framework magic.
However, if there is a high probability that code will be used in the future, it is easier to add if it's right there along the other code instead of in the version control system. You might n...
Foreign Key to multiple tables
...bo.Ticket
(
ID int NOT NULL,
Owner_ID int NOT NULL,
Owner_Type string NOT NULL, -- In our example, this would be "User" or "Group"
Subject varchar(50) NULL
)
With the above method, you could add as many Owner Types as you want. Owner_ID would not have a foreign key constraint but ...
What would a “frozen dict” be?
...ections
class FrozenDict(collections.Mapping):
"""Don't forget the docstrings!!"""
def __init__(self, *args, **kwargs):
self._d = dict(*args, **kwargs)
self._hash = None
def __iter__(self):
return iter(self._d)
def __len__(self):
return len(self._d...
Java “Virtual Machine” vs. Python “Interpreter” parlance?
...using eval and exec, and you can use compile() built-in function to turn a string into bytecode.
– Lie Ryan
Sep 27 '10 at 13:53
4
...
How do search engines deal with AngularJS applications?
... page with rendered data and storing it as HTML. Whenever we see the query string ?_escaped_fragment_ in a search request, we can deliver the static HTML snapshot we took of the page instead of the pre-rendered page through only JS. This requires us to have a backend that delivers our pages with con...