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Code Golf: Lasers
The shortest code by character count to input a 2D representation of a board, and output 'true' or 'false' according to the input .
...
Error-Handling in Swift-Language
... }
catchee(error)
}
}
You can write a similar class for testing an Optional returned value instead of Bool value:
class TryOptional<T> {
typealias Tryee = NSErrorPointer -> T?
typealias Catchee = NSError? -> T
typealias Retryee = (NSError?, UInt) -> Try...
How do I determine the size of an object in Python?
...s__ if hasattr(obj, s))
return size
return inner(obj_0)
And I tested it rather casually (I should unittest it):
>>> getsize(['a', tuple('bcd'), Foo()])
344
>>> getsize(Foo())
16
>>> getsize(tuple('bcd'))
194
>>> getsize(['a', tuple('bcd'), Foo(), {'fo...
Optional Parameters with C++ Macros
...
With greatest respect to Derek Ledbetter, David Sorkovsky, Syphorlate for their answers, together with the ingenious method to detect empty macro arguments by Jens Gustedt at
https://gustedt.wordpress.com/2010/06/08/detect-empty-macr...
What is the difference between “INNER JOIN” and “OUTER JOIN”?
...n as an anti semi join.
It is important to select a column for the IS NULL test that is either not nullable or for which the join condition ensures that any NULL values will be excluded in order for this pattern to work correctly and avoid just bringing back rows which happen to have a NULL value fo...
Is null reference possible?
...tr ?
Edit: Corrected several mistypes and added if-statement in main() to test for the cast-to-pointer operator actually working (which I forgot to.. my bad) - March 10 2015 -
// Error.h
class Error {
public:
static Error& NOT_FOUND;
static Error& UNKNOWN;
static Error& NONE; // ...
How to use java.net.URLConnection to fire and handle HTTP requests?
...the parameters will be available by HttpServletRequest#getParameter().
For testing purposes, you can print the response body to stdout as below:
try (Scanner scanner = new Scanner(response)) {
String responseBody = scanner.useDelimiter("\\A").next();
System.out.println(responseBody);
}
Fir...
Elegant setup of Python logging in Django
...default with django-admin createproject v1.3 - mileage might change with latest django versions:
LOGGING = {
'version': 1,
'disable_existing_loggers': False,
'handlers': {
'mail_admins': {
'level': 'ERROR',
'class': 'django.utils.log.AdminEmailHandler',
...
Why does ContentResolver.requestSync not trigger a sync?
...er is working, and my sync works when I trigger it from the Dev Tools Sync Tester application, however when I call ContentResolver.requestSync(account, authority, bundle) from my ContentProvider, my sync is never triggered.
...
Why does git perform fast-forward merges by default?
...o make a certain operation easier (rebasing, likely, or quick patching and testing), and then immediately delete once I'm done.
That means it likely should be absorbed into the topic branch it forked from, and the topic branch will be merged as one branch. No one needs to know what I did internall...