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How can I rename a field for all documents in MongoDB?
Assuming I have a collection in MongoDB with 5000 records, each containing something similar to:
7 Answers
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Convert number to month name in PHP
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The recommended way to do this:
Nowadays, you should really be using DateTime objects for any date/time math. This requires you to have a PHP version >= 5.2. As shown in Glavić's answer, you can use the following:
$monthNum = 3;
$dateObj = DateTime::createFromFormat('!m', $monthNum...
Finding the number of days between two dates
How to find number of days between two dates using PHP?
33 Answers
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What is mattr_accessor in a Rails module?
I couldn't really find this in Rails documentation but it seems like 'mattr_accessor' is the Module corollary for 'attr_accessor' (getter & setter) in a normal Ruby class .
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Equation for testing if a point is inside a circle
...r (center_x, center_y) and radius radius , how do you test if a given point with coordinates (x, y) is inside the circle?
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What exactly is Python multiprocessing Module's .join() Method Doing?
Learning about Python Multiprocessing (from a PMOTW article ) and would love some clarification on what exactly the join() method is doing.
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When to call activity context OR application context?
There has been a lot of posting about what these two contexts are.. But I'm still not getting it quite right
7 Answers
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Recursion or Iteration?
Is there a performance hit if we use a loop instead of recursion or vice versa in algorithms where both can serve the same purpose? Eg: Check if the given string is a palindrome.
I have seen many programmers using recursion as a means to show off when a simple iteration algorithm can fit the bill.
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Why do we use __init__ in Python classes?
I am having trouble understanding the Initialization of classes.
8 Answers
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How to set OnClickListener on a RadioButton in Android?
I have two RadioButton s inside a RadioGroup . I want to set OnClickListener on those RadioButton s. Depending on which RadioButton is clicked, I want to change the text of an EditText . How can I achieve this?
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