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Where to use EJB 3.1 and CDI?
...ference between invoking an EJB vs invoking a CDI bean.
Default to POJOs, then CDI, then EJB
Of course don't use CDI or EJB when there is no benefit. Throw in CDI when you start to want injection, events, interceptors, decorators, lifecycle tracking and things like that. That's most the time.
B...
Inefficient jQuery usage warnings in PHPStorm IDE
...Scott Kosman here.
Basically the answer is to select IDs individually and then use .find(...) for anything below. So taking your example:
$("#property [data-role='content'] .container");
Changing it to this makes PhpStorm happy and can evidently be more than twice as fast:
$("#property").find("...
Change the URL in the browser without loading the new page using JavaScript
...also change the URL in the browser so if the user hits reload or bookmark, then the new URL is used?
14 Answers
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HTTP 1.0 vs 1.1
... lot by using something called 'entity tag'.
If 2 resources are the same, then they will have the same entity tags.
HTTP 1.1 also adds the If-Unmodified-Since, If-Match, If-None-Match conditional headers.
There are also further additions relating to caching like the Cache-Control header.
100 ...
Programmatically generate video or animated GIF in Python?
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Well, now I'm using ImageMagick. I save my frames as PNG files and then invoke ImageMagick's convert.exe from Python to create an animated GIF. The nice thing about this approach is I can specify a frame duration for each frame individually. Unfortunately this depends on ImageMagick being ...
iPhone Keyboard Covers UITextField
... is to slide the field (and everything above it) up with an animation, and then back down when you are done. You may need to put the text field and some of the other items into another view and slide the view as a unit. (I call these things "plates" as in "tectonic plates", but that's just me). B...
python pandas remove duplicate columns
...) returns a boolean array: a True or False for each column. If it is False then the column name is unique up to that point, if it is True then the column name is duplicated earlier. For example, using the given example, the returned value would be [False,False,True].
Pandas allows one to index usi...
Hadoop “Unable to load native-hadoop library for your platform” warning
...e source code of Hadoop and recompile libhadoop.so.1.0.0 on 64bit system, then replace the 32bit one.
Steps on how to recompile source code are included here for Ubuntu:
http://www.ercoppa.org/Linux-Compile-Hadoop-220-fix-Unable-to-load-native-hadoop-library.htm
Good luck.
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Cannot ping AWS EC2 instance
... has a public IP. If has a Public DNS or Public IP address (circled below) then you should be good. This will be the address you ping.
2) Next make sure the Amazon network rules allow Echo Requests. Go to the Security Group for the EC2.
right click, select inbound rules
A: select Add Rule
B: Se...
Should I use Java date and time classes or go with a 3rd party library like Joda Time?
...use the java classes under the hood for actual "calendrical" calculations. Then you don't have to familiarize yourself with an API of >100 classes, a different formatting/parsing mechanism etc.
Of course, if you do need complete representation of different chronologies (e.g. Hebrew) or wish to ...