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In Django, how does one filter a QuerySet with dynamic field lookups?
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A simplified example:
In a Django survey app, I wanted an HTML select list showing registered users. But because we have 5000 registered users, I needed a way to filter that list based on query criteria (such as just people who completed a certain workshop). In order for the survey eleme...
How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII
...e given language, ignoring the punctuation characters, and based on a wide selection of documents in that language.
As others have remarked, you really only have the high-bit-set punctuation characters available to distinguish between cp1252 and macroman. I'd suggest training a Mozilla-type model o...
How to reference style attributes from a drawable?
I want to have 2 selectable themes for my application. In order to do that, I defined some attributes, like this:
5 Answers...
Simulator or Emulator? What is the difference?
...e than it is.
This comparison of both terms will contradict the currently selected answer (from Toybuilder) which puts the difference on the internal model, while my suggestion is that the difference is whether the fake can or cannot be used to perform the actual function in the actual world (to so...
How does BLAS get such extreme performance?
... can have different settings). It tries different configurations and then selects the best for the particular target system.
(Tip: That is why if you are using ATLAS you are better off building and tuning the library by hand for your particular machine then using a prebuilt one.)
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What is the difference between UTF-8 and Unicode?
...r wants to use. Also, when a text editor program reads a file, it needs to select a text encoding scheme to decode it correctly. Same goes when you are typing and entering a letter, the text editor needs to know what scheme you use so that it will save it correctly.
– Cheng
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Simple Digit Recognition OCR in OpenCV-Python
...de a small code in OpenCV. It does following things:
It loads the image.
Selects the digits ( obviously by contour finding and applying constraints on area and height of letters to avoid false detections).
Draws the bounding rectangle around one letter and wait for key press manually. This time we...
fastest MD5 Implementation in JavaScript
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While selecting library it's also important to see if it supports modern frameworks such as Bower, passes jslint, supports plugin model for JQuery or module systems such as AMD/RequireJS in addition to being in active development a...
Sanitizing strings to make them URL and filename safe?
...OU
echo normal_chars('üÿÄËÏÖÜŸåÅ'); // uyAEIOUYaA
Based on the selected answer in this thread: URL Friendly Username in PHP?
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Difference between classification and clustering in data mining? [closed]
... of fruits.
What you will do first is you take on the fruit and you will select any physical character of that particular fruit. suppose you taken color.
Then you will arrange them based on the color, then the groups will be some thing like this.
RED COLOR GROUP: apples & cherry fruits.
GREE...