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How to parse/format dates with LocalDateTime? (Java 8)
...-year number/text 3; 03; Q3; 3rd quarter
Y week-based-year year 1996; 96
w week-of-week-based-year number 27
W week-of-month number 4
E day-of-week text ...
Sync data between Android App and webserver [closed]
...ing this is writing your own custom ContentProvider backed by a Sqlite database. A decent tutorial for a content provider can be found here: http://thinkandroid.wordpress.com/2010/01/13/writing-your-own-contentprovider/
A ContentProvider defines a consistent interface to interact with your stored ...
Ruby on Rails: Where to define global constants?
...hem without creating a new object instance:
class Card < ActiveRecord::Base
def self.colours
['white', 'blue']
end
end
# accessible like this
Card.colours
Alternatively, you can create class variables and an accessor. This is however discouraged as class variables might act kind of su...
Operational Transformation library?
...ound.
Operational Transformation: E.g.
Google Wave OT. The approach is based on the so called Jupiter approach.
ShareJs. Based on the same OT algorithm as Google Wave OT.
Coweb-jsoe. Based on COT - a very sophisticated OT approach that also supports p2p message propagation.
OpenCoweb. It leverag...
Method names for getting data [closed]
...ail.
findBooks(criteria)
is when are trying to find a sub-set
of the books based on parameters to
the method call, this will usually
be overloaded with different search
criteria
loadBooks(source) is when you are
loading from an external source,
like a file or db.
I would not use
fetch/retrieve becau...
How do you see recent SVN log entries?
... order:
svn log -r HEAD:1
To list everything from the thirteenth to the base of the currently checked-out revision in ascending order:
svn log -r 13:BASE
To get everything between the given dates:
svn log -r {2011-02-02}:{2011-02-03}
You can combine all the above expressions with the --limi...
“Use the new keyword if hiding was intended” warning
...
Your class has a base class, and this base class also has a property (which is not virtual or abstract) called Events which is being overridden by your class. If you intend to override it put the "new" keyword after the public modifier. E.G.
...
Avoiding instanceof in Java
...Orc. What do you think about me?". Opinionated elf can then judge monsters based on these "greetings", with a code similar to bool visitOrc(Orc orc) { return orc.stench()<threshold; } bool visitFlower(Flower flower) { return flower.colour==magenta; }. The only monster-specific code will then be c...
What is the difference between self::$bar and static::$bar in PHP?
...c bindings. One of the most useful scenarios that I found was for creating Base classes for Singleton Classes:
class A { // Base Class
protected static $name = '';
protected static function getName() {
return static::$name;
}
}
class B extends A {
protected static $name = 'M...
What is the better API to Reading Excel sheets in java - JXL or Apache POI [closed]
...ionally, POI contains not just the main "usermodel" API, but also an event-based API if all you want to do is read the spreadsheet content.
In conclusion, because of the better documentation, more features, active development, and Excel 2007+ format support, I use Apache POI.
...