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Difference between one-to-many and many-to-one relationship
What is the real difference between one-to-many and many-to-one relationship? It is only reversed, kind of?
10 Answers
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Getting the array length of a 2D array in Java
I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code:
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MySQL Great Circle Distance (Haversine formula)
I've got a working PHP script that gets Longitude and Latitude values and then inputs them into a MySQL query. I'd like to make it solely MySQL. Here's my current PHP Code:
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Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4
...nts to parse the given positional argument as the keyword argument kwargs, and since a string is an iterable, an atypical code path begins to unfold. Always use name= on your urls!
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Uploading both data and files in one form using Ajax?
I'm using jQuery and Ajax for my forms to submit data and files but I'm not sure how to send both data and files in one form?
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Where is the “Fold” LINQ Extension Method?
... prod * next);
See MSDN for more information. It lets you specify a seed and then an expression to calculate successive values.
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Delete everything in a MongoDB database
...way everything in a database—that is, to delete every single collection, and whatever else might be lying around, and start from scratch. Is there a single line of code that will let me do this? Bonus points for giving both a MongoDB console method and a MongoDB Ruby driver method.
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How can I prevent the backspace key from navigating back?
On IE I can do this with the (terribly non-standard, but working) jQuery
33 Answers
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How can you dynamically create variables via a while loop? [duplicate]
...ould just use a dictionary, where you can dynamically create the key names and associate a value to each.
a = {}
k = 0
while k < 10:
<dynamically create key>
key = ...
<calculate value>
value = ...
a[key] = value
k += 1
There are also some interesting dat...
Importing variables from another file?
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from file1 import *
will import all objects and methods in file1
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