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Best way to define private methods for a class in Objective-C
I just started programming Objective-C and, having a background in Java, wonder how people writing Objective-C programs deal with private methods.
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How to draw a path on a map using kml file?
Can I parse kml file in order to display paths or points in Android? Please could you help me with that?
4 Answers
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Using an ORM or plain SQL? [closed]
...of the apps I've developed (then proceeded to forget about), I've been writing plain SQL, primarily for MySQL. Though I have used ORMs in python like SQLAlchemy , I didn't stick with them for long. Usually it was either the documentation or complexity (from my point of view) holding me back.
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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
I've been reading some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used?
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Check for column name in a SqlDataReader object
How do I check to see if a column exists in a SqlDataReader object? In my data access layer, I have create a method that builds the same object for multiple stored procedures calls. One of the stored procedures has an additional column that is not used by the other stored procedures. I want to ...
How do you get a directory listing sorted by creation date in python?
What is the best way to get a list of all files in a directory, sorted by date [created | modified], using python, on a windows machine?
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How do malloc() and free() work?
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OK some answers about malloc were already posted.
The more interesting part is how free works (and in this direction, malloc too can be understood better).
In many malloc/free implementations, free does normally not return the memory to the operating system (or at least only in rare...
Could someone explain the pros of deleting (or keeping) unused code?
...e are some reasons why unused code should be removed:
For anyone new working on a project, they not only have to understand
the working code, they have to understand unused material also. This
is wasted time and creates confusion.
There is a danger that at sometime someone will make a change
whi...
How to do associative array/hashing in JavaScript
I need to store some statistics using JavaScript in a way like I'd do it in C#:
11 Answers
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Removing multiple keys from a dictionary safely
...dict = {'b': 'foo'}
def entries_to_remove(entries, the_dict):
for key in entries:
if key in the_dict:
del the_dict[key]
A more compact version was provided by mattbornski using dict.pop()
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