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AtomicInteger lazySet vs. set
...g of the lazySet to cpp code:
http://hg.openjdk.java.net/jdk7/jdk7/hotspot/file/9b0ca45cd756/src/share/vm/prims/unsafe.cpp
Unsafe_setOrderedLong -> SET_FIELD_VOLATILE definition -> OrderAccess:release_store_fence.
For x86_64, OrderAccess:release_store_fence is defined as using the xchg instruc...
What is the relation between BLAS, LAPACK and ATLAS
... be compilable with GNU compilers (gcc, g++ and gfortran). I have made MakeFiles which you can read to learn how you can call individual Fortran/FORTRAN routines in a C or C++ program. I have also put some installations instructions for mac and linux (sorry windows guys!). I have also made some bash...
What is the right way to override a setter method in Ruby on Rails?
...d like to know if the following is a "proper"/"correct"/"sure" way to override a setter method for a my class attribute.
5 ...
Auto-size dynamic text to fill fixed size container
...e:first', this);
var maxHeight = $(this).height();
var maxWidth = $(this).width();
var textHeight;
var textWidth;
do {
ourText.css('font-size', fontSize);
textHeight = ourText.height();
textWidth = ourText.width();
...
How to set focus on input field?
...
When a Modal is opened, set focus on a predefined <input> inside this Modal.
Define a directive and have it $watch a property/trigger so it knows when to focus the element:
Name: <input type="text" focus-me="shouldBeOpen">
app.directive('focusMe', ['$timeout', '$parse',...
Difference between TCP and UDP?
...for streaming audio and video. Streaming media such as Windows Media audio files (.WMA) , Real Player (.RM), and others use UDP because it offers speed! The reason UDP is faster than TCP is because there is no form of flow control or error correction. The data sent over the Internet is affected by c...
API Versioning for Rails Routes
...
It's worth noting that in the routes file 301 has been made the default redirect and for good reason. From the guides: Please note that this redirection is a 301 “Moved Permanently” redirect. Keep in mind that some web browsers or proxy servers will cache ...
mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
... to display all errors. You can do this by placing this at the top of your files or in your config file: error_reporting(-1);. If you have any syntax errors this will point them out to you.
Use mysql_error(). mysql_error() will report any errors MySQL encountered while performing your query.
Sample...
WebSockets vs. Server-Sent events/EventSource
...SEs have been kept in the shadow is because later APIs like WebSockets provide a richer protocol to perform bi-directional, full-duplex communication. Having a two-way channel is more attractive for things like games, messaging apps, and for cases where you need near real-time updates in both direct...
Provide an image for WhatsApp link sharing
...ently WhatsApp has increased its maximum image size (dimensions as well as file size). I did some tests: it does not work consistently every time on every device. I tested 2.x Mb images and even that seemed to work 9/10 times. <300KB is the safest approach, but you should be fine using larger ima...