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Why do we need entity objects? [closed]
... separating your domain model from your database model.
What I do is use Test Driven Development so I write my UI and Model layers first and the Data layer is mocked, so the UI and model is build around domain specific objects, then later I map these objects to what ever technology I'm using the t...
Is it OK to use == on enums in Java?
...t OK to use == on enums in Java, or do I need to use .equals() ? In my testing, == always works, but I'm not sure if I'm guaranteed of that. In particular, there is no .clone() method on an enum, so I don't know if it is possible to get an enum for which .equals() would return a different...
Counting the number of True Booleans in a Python List
...
Yes, for the top part. As I indicated, the Python test for a "true " (as in an if statement) is more complicated than just testing for True. See docs.python.org/py3k/library/stdtypes.html#truth. The True = 2 was just to reinforce that the concept of "true" is more complex;...
Retrieve filename from file descriptor in C
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I just tested this and it remains correct if the file is moved and you call it again (meaning: you get the new path of the file). However this is not supported on linux (tested on Ubuntu 14.04 - F_GETPATH is not defined).
...
Storing Objects in HTML5 localStorage
...ur object before storing it, and later parse it when you retrieve it:
var testObject = { 'one': 1, 'two': 2, 'three': 3 };
// Put the object into storage
localStorage.setItem('testObject', JSON.stringify(testObject));
// Retrieve the object from storage
var retrievedObject = localStorage.getItem(...
How to implement the factory method pattern in C++ correctly
... and bug-prone, see Is the practice of returning a C++ reference variable, evil? for example. So pointers are the only thing that's left, and that includes smart pointers too. In other words, factories are most useful when used with dynamic allocation, so you can do things like this:
class Abstract...
Sort a list by multiple attributes?
...So first I defined a helper method
def attr_sort(self, attrs=['someAttributeString']:
'''helper to sort by the attributes named by strings of attrs in order'''
return lambda k: [ getattr(k, attr) for attr in attrs ]
then to use it
# would defined elsewhere but showing here for consiseness
se...
Deserializing a JSON into a JavaScript object
...se ? window.JSON.parse( data ) : (new Function("return " + data))();
}
// testing
obj = parseJSON('{"name":"John"}');
alert(obj.name);
This way you don't need any external library and it still works on old browsers.
share...
Delete everything in a MongoDB database
...e, however if you're trying to use this for wiping the database in between test cases you may eventually find problems with index constraints not being honored after the database drop. As a result, you'll either need to mess about with ensureIndexes, or a simpler route would be avoiding the dropData...
How to convert SecureString to System.String?
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@radbyx In a quick and dirty test setup, I can call it 1000 times in 76ms. The first invocation takes 0.3 ms and subsequent invocations ~0.07ms. How large is your secure string and which version of the framework are you using?
– Ras...