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Creating a dynamic choice field
..._from_request(self.request)
for l in get_all_choices().filter(user=user_id):
admin = 'y' if l in self.core else 'n'
choice = (('%s_%s' % (l.name, admin)), ('%s' % l.name))
self.affiliated_choices.append(choice)
super(SupportForm, self).__init__(*ar...
Remove characters except digits from string using Python?
...g of length 256) which in this case is the same as ''.join(chr(x) for x in range(256)) (just faster to make;-). .translate applies the translation table (which here is irrelevant since all essentially means identity) AND deletes characters present in the second argument -- the key part.
.translate ...
Android encryption / decryption using AES [closed]
...)
You could use functions like these:
private static byte[] encrypt(byte[] raw, byte[] clear) throws Exception {
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.do...
How can I extract audio from video with ffmpeg?
...ch typically results in average bitrates in the upper part of the sane CBR range (where 320 kbit/s is the maximum, probably a bit beyond the point at which lossless compression becomes more appropriate).
– Evgeni Sergeev
Sep 15 '16 at 8:32
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How to write LaTeX in IPython Notebook?
... Gotcha. The best solution for that right now would be to use 'raw' cells instead of markdown, and just type LaTeX as you would. Then use nbconvert to turn the ipynb to TeX (code, figures and all), and run latex to render that to PDF, etc. You don't get live-rendered TeX in the browser...
Sort a single String in Java
...k Arrays.sort will destroy any supplementary characters due to the way the ranges are defined, but don't quote me.
– McDowell
Mar 3 '09 at 14:00
1
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What are the different usecases of PNG vs. GIF vs. JPEG vs. SVG?
....
PNG if straight lines as in a comic or other drawing or if a wide color range is needed with transparency(and IE6 is not a factor)
And as commented, if you are unsure of what would qualify, try each format with different compression ratios and weigh the quality and size of the picture and choos...
Connecting to TCP Socket from browser using javascript
...ebsockets for this.
Currently no popular browser has implemented any such raw sockets api for javascript that lets you create and access raw sockets, but a draft for the implementation of raw sockets api in JavaScript is under-way. Have a look at these links:
http://www.w3.org/TR/raw-sockets/
htt...
How to delete all the rows in a table using Eloquent?
...rom my model using the whereIn method: $itemsAllContentIDs = Item::where('user_id', $userId)->pluck('item_content_id')->all(); ItemsContent::whereIn('id', $itemsAllContentIDs)->delete();
– Keith DC
Nov 3 '16 at 7:24
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How can I see the raw SQL queries Django is running?
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See the docs FAQ: "How can I see the raw SQL queries Django is running?"
django.db.connection.queries contains a list of the SQL queries:
from django.db import connection
print(connection.queries)
Querysets also have a query attribute containing the query to...