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Circular (or cyclic) imports in Python
...t remember the following:
'import' and 'from xxx import yyy' are executable statements. They execute
when the running program reaches that line.
If a module is not in sys.modules, then an import creates the new module
entry in sys.modules and then executes the code in the module. It do...
How to avoid null checking in Java?
...esn't understand them. So, in effect, the argument that the code is not portable may be invalid - if you use a system that supports and understands these annotations, you get the added benefit of stricter error checking, otherwise you get less of it but your code should still build fine, and the qua...
How to read contacts on Android 2.0
...e amount of data that is returned.
String key, value, phoneNumber;
Hashtable contactPhoneInfo = new Hashtable<String, String>();
Uri phoneUri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
String [] PHONES_PROJECTION = new String[] { ContactsContract.CommonDataKinds.Phone.NUMBER ...
std::function vs template
...he code (which would not be possible if the call were performed through a vtable).
Yes, it is true that template support is not perfect, and C++11 is still lacking a support for concepts; however, I don't see how std::function would save you in that respect. std::function is not an alternative to t...
How to enable local network users to access my WAMP sites?
...l this does not make sense since a disabled firewall ignores the exception tables and allow everything. Make sure your antivirus software is disabled or it's firewall layer is also disabled to perform a clean test.
– Matteus Barbosa
Apr 21 '19 at 14:36
...
jQuery: Return data after ajax call success [duplicate]
... Benjamin Gruenbaum for pointing it out). Currently (as of May, 2015) the stable versions of jQuery are 1.x and 2.x.
What I explained above (in March, 2011) is a way to use jQuery Deferred Objects to do something asynchronously that in synchronous code would be achieved by returning a value.
But a...
OO Design in Rails: Where to put stuff
...way. Or to put it another way, a model doesn't have to be an analogue of a table, or even related to anything stored at all. Even better, as long as you name your file in app/models according to Rails' conventions (call #underscore on the class name to find out what Rails will look for), Rails will ...
Best explanation for languages without null
...f why null is undesirable is that meaningless states should not be representable.
Suppose I'm modeling a door. It can be in one of three states: open, shut but unlocked, and shut and locked. Now I could model it along the lines of
class Door
private bool isShut
private bool isLocked
an...
How to perform a mysqldump without a password prompt?
...y user, and in no case the root user. It can be done like this: GRANT LOCK TABLES, SELECT ON *.* TO 'BACKUPUSER'@'%' IDENTIFIED BY 'PASSWORD';
– gadjou
Feb 21 '17 at 8:34
...
Conceptually, how does replay work in a game?
... shouldn't be done. I don't care if he uses the system API or a predefined table of random numbers. What I originally said was correct. Every function in his engine should produce the same result based on its inputs. Time should never be a factor.
– Timothy Baldridge
...