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What is the point of interfaces in PHP?
...ce IPersonService
{
public function Create($personObject);
}
class MySqlPerson implements IPersonService
{
public function Create($personObject)
{
// Create a new person in MySql database.
}
}
class MongoPerson implements IPersonService
{
public function Create($pers...
Does SQLAlchemy have an equivalent of Django's get_or_create?
...ote that begin_nested automatically triggers a flush.
Note that if using MySQL, the transaction isolation level must be set to READ COMMITTED rather than REPEATABLE READ for this to work. Django's get_or_create (and here) uses the same stratagem, see also the Django documentation.
...
static const vs #define
...d into which they should be packed if the enum is a member of struct/class/union), while C++11 defaults to int but can be explicitly set by the programmer
can't take the address - there isn't one as the enumeration values are effectively substituted inline at the points of usage
stronger usage restr...
iPhone hide Navigation Bar only on first page
...ind the event/action to trigger it to hide again when they get back to the root view....
14 Answers
...
Emacs Ruby autocomplete almost working
...
Here's a thought: The macro binds a flet function (rails-project:root) one time to the value that (rails-project:root) has just before the body executes. (That's how it claims a performance increase: Apparently the outer (rails-project:root) is expensive, so calling once and caching the va...
Dynamically Changing log4j log level
...ns of the configuration will pose a more in depth approach.
LogManager.getRootLogger().setLevel(Level.DEBUG);
The changes are permanent through the life cyle of the Logger. On reinitialization the configuration will be read and used as setting the level at runtime does not persist the level chang...
Copy file or directories recursively in Python
...of copying files and folders recursively. (Python 3.X)
import os, shutil
root_src_dir = r'C:\MyMusic' #Path/Location of the source directory
root_dst_dir = 'D:MusicBackUp' #Path to the destination folder
for src_dir, dirs, files in os.walk(root_src_dir):
dst_dir = src_dir.replace(root_src...
What is @ModelAttribute in Spring MVC?
...uest method handler with @ModelAttribute in the arguments. Then we have to union the rules.
Of course we have tons of different situations - @ModelAttribute methods can also be defined in an @ControllerAdvice and so on...
...
Directory does not exist. Parameter name: directoryVirtualPath
...koverflow.com/a/115992/1876622
So my local folder structure was:
[Project Root]/Content/jquery-plugins // had files
[Project Root]/Scripts/jquery-plugins // had files
[Project Root]/Scripts/misc-plugins // empty folder
Whereas any clone / pull of my repository on the remote server was not getti...
Delete all local changesets and revert to tree
... even smarter approach is to use the revset language, and do:
% hg strip 'roots(outgoing())'
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