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In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...ace and for every LongNamedRestaurant. LongNamedRestaurant just creates an extra table with the food_type and a reference to the place table.
If you do Place.objects.all(), you also get every place that is a LongNamedRestaurant, and it will be an instance of Place (without the food_type). So Place....
Peak-finding algorithm for Python/SciPy
...ers width, threshold, distance and above all prominence to get a good peak extraction.
According to my tests and the documentation, the concept of prominence is "the useful concept" to keep the good peaks, and discard the noisy peaks.
What is (topographic) prominence? It is "the minimum height nec...
Get the string representation of a DOM node
...DOM representation of a node (element or document) and I'm looking for the string representation of it. E.g.,
11 Answers
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How to delete an object by id with entity framework
...Customer(int id)
{
using (var context = new Context())
{
const string query = "DELETE FROM [dbo].[Customers] WHERE [id]={0}";
var rows = context.Database.ExecuteSqlCommand(query,id);
// rows >= 1 - count of deleted rows,
// rows = 0 - nothing to delete.
}
}
...
Where IN clause in LINQ [duplicate]
...
this will compare string values, but what about ids??
– Jitendra Pancholi
Feb 22 '13 at 7:32
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Sort objects in an array alphabetically on one property of the array
...
@BenBarreth there is no reason to lower-case the strings. the whole point of localeCompare is to shunt the work of managing sort logic and locale quirks to the system. If doing a case-insensitive sort is normal for the locale, as it is in english, this will be done for you:...
Check if all elements in a list are identical
... are distinct, it will still complete the entire search. it also uses O(k) extra space where k is the number of distinct elements in the list.
– aaronasterling
Oct 2 '10 at 7:58
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How to create a fixed-size array of objects
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This question has already been answered, but for some extra information at the time of Swift 4:
In case of performance, you should reserve memory for the array, in case of dynamically creating it, such as adding elements with Array.append().
var array = [SKSpriteNode]()
array....
Is Redis just a cache?
...e, Redis lets you operate on the values. There are 5 data types in Redis - Strings, Sets, Hash, Lists and Sorted Sets. Each data type exposes various operations.
The best way to understand Redis is to model an application without thinking about how you are going to store it in a database.
Lets sa...
How can I see normal print output created during pytest run?
...ain conditions, along with the summary of the tests it prints by default.
Extra summary info can be shown using the '-r' option:
pytest -rP
shows the captured output of passed tests.
pytest -rx
shows the captured output of failed tests (default behaviour).
The formatting of the output is pre...