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What is an EJB, and what does it do?
...n or XML
setting. The server automatically passes the authenticated user details along with each
call as security context (the calling principal and role). It ensures that all RBAC
rules are automatically enforced so that methods cannot be illegally called by the
wrong role. It allows EJBs to...
Reset/remove CSS styles for element only
...kely scenario) or to user-agent styles itself if no user styles set.
More details here: https://developer.mozilla.org/en-US/docs/Web/CSS/revert
And only issue is the support: only Safari 9.1 and iOS Safari 9.3 have support for revert value at the time of writing.
So I'll say use this style and fa...
How do I set a variable to the output of a command in Bash?
...berberries
eof
Older part of answer...
This is some repeat, but with more details...
Reading more than one variable (with Bashisms)
df -k /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/dm-0 999320 529020 401488 57% /
If I just want a used value:
array=($(df -k /))
yo...
Class does not implement its superclass's required members
...
Thanks for such detailed answer. This really brings light into the matter.
– Julian Osorio
Aug 5 '14 at 20:01
...
What is the advantage of using REST instead of non-REST HTTP?
...can be though as a way of designing the app, rather then an implementation detail. As Darrel points out implementing it might not be easy, but the result is rewarding. "It makes it easy for new clients to use your application" - Again: REST is HTTP.
– Emil Ivanov
...
Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
...
It's a good writeup, but I'd like to highlight one detail. The STL is not a "product" of C++. In fact, STL, as a concept, existed before C++, and C++ just happened to be an efficient language having (almost) enough power for generic programming, so STL was written in C++.
...
Private vs Protected - Visibility Good-Practice Concern [closed]
...mbination of keywords necessary to make a method overridable is a language detail IMHO. The counter argument I present to rationalization #1 is squarely aimed at the case you mention "If I'm not so sure...". Practically speaking, if you can't think of a reason why it would be dangerous then theres ...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
... by switching to Apache Commons FileUpload. See PrimeFaces 3.x section for detail.
PrimeFaces 3.x
This version does not support JSF 2.2 / Servlet 3.0 native file upload. You need to manually install Apache Commons FileUpload and explicitly register the file upload filter in web.xml.
You need th...
How to do a FULL OUTER JOIN in MySQL?
...case anybody stumbled on this page and wants more clarification, here is a detailed breakdown.
Example Tables
Suppose we have the following tables:
-- t1
id name
1 Tim
2 Marta
-- t2
id name
1 Tim
3 Katarina
Inner Joins
An inner join, like this:
SELECT *
FROM `t1`
INNER JOIN `t2` ON...
How dangerous is it to access an array out of bounds?
...r machine into botnet node.
See Smashing The Stack For Fun And Profit for details on how this can be done.
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