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Using ECMAScript 6
...le using classes
ES6 is a fast moving target. Refer to the Compatibility Table to find features supported by transpilers such as Traceur and Babel and browser support. You can even expand the chart to see the test used to verify compatibility:
To try out bleeding edge ES6 in a browser try the ...
multiprocessing: How do I share a dict among multiple processes?
...re my own work that is faster than Manager's dict and is simpler and more stable than pyshmht library that uses tons of memory and doesn't work for Mac OS. Though my dict only works for plain strings and is immutable currently.
I use linear probing implementation and store keys and values pairs in a...
EC2 Can't resize volume after increasing size
...sired new space (if empty the whole space is reserved)
Hit a to make it bootable
Hit 1 and w to write changes
Reboot instance OR use partprobe (from the parted package) to tell the kernel about the new partition table
Log via SSH and run resize2fs /dev/xvde1
Finally check the new space running df -h...
What is the PostgreSQL equivalent for ISNULL()
...
Use COALESCE() instead:
SELECT COALESCE(Field,'Empty') from Table;
It functions much like ISNULL, although provides more functionality. Coalesce will return the first non null value in the list. Thus:
SELECT COALESCE(null, null, 5);
returns 5, while
SELECT COALESCE(null, 2, 5);...
Hibernate problem - “Use of @OneToMany or @ManyToMany targeting an unmapped class”
...and not org.hibernate.annotations.Entity. The former makes the entity detectable. The latter is just an addition.
if you are manually listing your entities (in persistence.xml, in hibernate.cfg.xml, or when configuring your session factory), then make sure you have also listed the ScopeTopic entity
...
How to count occurrences of a column value efficiently in SQL?
I have a table of students:
6 Answers
6
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How to use php serialize() and unserialize()
...p script ready to store/send it somewhere. You have the option to create a table that exactly matches the expected data, but this is tedious you are essentially doubling your work load because you have to write code that matches too, plus changes in database need changes in code or vice versa. When ...
What is compiler, linker, loader?
...==============+
|
|---> Executable (.Exe/a.out) (com:cc <file.name> )
|
V
Executable file(a.out)
C preprocessor :-
C preprocessing is the first step in the compilation. It handles:
#define...
How to send an email using PHP?
...chments so you don't have to write your own implementation.
The class is stable and it is used by many other projects like Drupal, SugarCRM, Yii, and Joomla!
Here is an example from the page above:
<?php
require 'PHPMailerAutoload.php';
$mail = new PHPMailer;
$mail->isSMTP(); ...
jQuery Ajax File Upload
...total;
var progress_bar_id = "#progress-wrp";
if (event.lengthComputable) {
percent = Math.ceil(position / total * 100);
}
// update progressbars classes so it fits your code
$(progress_bar_id + " .progress-bar").css("width", +percent + "%");
$(progress_bar_id + " .st...