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Why does sun.misc.Unsafe exist, and how can it be used in the real world?
... code that contains special instructions for CAS
read more about CAS here http://en.wikipedia.org/wiki/Compare-and-swap
The sun.misc.Unsafe functionality of the host VM can be used to allocate uninitialized objects and then interpret the constructor invocation as any other method call.
One can trac...
Why is a combiner needed for reduce method that converts type in java 8
...eUploader: {
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When serving JavaScript files, is it better to use the application/javascript or application/x-javas
...ey should go on that rather then what the HTML says (at least according to HTTP, you might be looking at a different spec, you didn't provide any links).
– Quentin
Feb 10 '13 at 1:46
...
Should all jquery events be bound to $(document)?
...y, event delegation is actually recommended now. at least for vanilla js.
https://gomakethings.com/why-event-delegation-is-a-better-way-to-listen-for-events-in-vanilla-js/
"Web performance #
It feels like listening to every click in the document would be bad for performance, but it’s actually mo...
MySql server startup error 'The server quit without updating PID file '
...install_db:
mysql_install_db --help
and view the MySQL documentation:
http://dev.mysql.com/doc/refman/5.5/en/mysql-install-db.html
http://dev.mysql.com/doc/refman/5.5/en/default-privileges.html
For mysql 8.x:
unset TMPDIR
mysqld --initialize-insecure --log-error-verbosity --user=`whoami` --...
How to access command line parameters?
... over the command line arguments, but cannot access them with subscripts.
http://doc.rust-lang.org/std/env/fn.args.html
If you want the command line arguments as a vector of strings, this will work now:
use std::env;
...
let args: Vec<String> = env::args().map(|s| s.into_string().unwrap())....
Psql list all tables
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How to use GROUP_CONCAT in a CONCAT in MySQL
... AS NAME
FROM test
GROUP BY ID, NAME
) AS A
GROUP BY ID;
SQL Fiddle: http://sqlfiddle.com/#!2/b5abe/9/0
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Why check both isset() and !empty()
...
isset() tests if a variable is set and not null:
http://us.php.net/manual/en/function.isset.php
empty() can return true when the variable is set to certain values:
http://us.php.net/manual/en/function.empty.php
To demonstrate this, try the following code with $the_var un...
$PHP_AUTOCONF errors on mac os x 10.7.3 when trying to install pecl extensions
I am trying to setup my machine with pecl_http and memcache and in both cases, I get similar errors. This is on MAC OS X 10.7.3 (lion) and I also have XCODE installed on it. I also installed Zend Server community edition before running these commands and have CFLAGS='-arch i386 -arch x86_64' environ...