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How to design a multi-user ajax web application to be concurrently safe
...he page? Values inside objects?). This will depend on your webservers, database & caching hardware, # of user, # of objects, etc. Not an easy decision to make.
For each atomic artifact have:
an application-wide unique-id
an incrementing version-id
a locking mechanism for write-access (mutex ma...
Performing user authentication in Java EE / JSF using j_security_check
...ation:
Set up the security realm:
In my case, I had the users in the database. So I followed this blog post to create a JDBC Realm that could authenticate users based on username and MD5-hashed passwords in my database table:
http://blog.gamatam.com/2009/11/jdbc-realm-setup-with-glassfish-v3.html...
Uppercase or lowercase doctype?
... specifically trying to make considerations for it. For most client and JS-based server development, JSON has replaced XML.
Therefore, I can only see this really applying if you are trying to update an existing, xhtml/xml-based legacy system to co-exist with new, HTML5 functionality. If this is the...
WatiN or Selenium? [closed]
...ion tools are independent projects; there are 2 that I know of: Wax (Excel based, hosted on CodePlex) and WatiN Test Record (hosted on SourceForge). Neither is as robust as Selenium IDE.
Very good IE support. Can attach and detach to/from running instances. Can access native window handles etc. (Se...
i18n Pluralization
.... Just want to share my own very precise Russian pluralization formula. It based on Unicode Specs.
Here is contents of config/locales/plurals.rb file only, everything else should be done as same as in answer above.
{:ru =>
{ :i18n =>
{ :plural =>
{ :keys => [:zero, :one, ...
What is the difference between trie and radix trie data structures?
...ewer edges. To circumvent the memory concern, various proposals were made. Based on those variations trie are also named as “compact trie” and “compressed trie”. While a consistent nomenclature is rare, a most common version of a compact trie is formed by grouping all edges when nodes have s...
How to create a colored 1x1 UIImage on the iPhone dynamically?
I would like to create a 1x1 UIImage dynamically based on a UIColor.
6 Answers
6
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How do I move the turtle in LOGO? [closed]
...monic fd. When working with a robot (real) turtle as opposed to a graphics based (virtual) one, you might find that the turning commands left and right [lt & rt] move the turtle a little, accidentally.
Most implementations also allow the command backwards [bk].
When the turtle moves, it may dr...
What are the differences between struct and class in C++?
...2.2 in C++98 through C++11):
In absence of an access-specifier
for a base class, public is assumed
when the derived class is declared
struct and private is assumed when the class is declared class.
And just for completeness' sake, the more widely known difference between class and struct...
std::shared_ptr of this
...
Try to construct a shared_ptr based on a default-constructed shared_ptr and whatever you want to point it at...
– Deduplicator
Oct 25 '15 at 17:13
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