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Index on multiple columns in Ruby on Rails
I'm implementing functionality to track which articles a user has read.
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How do I use raw_input in Python 3
...3.1 and can't get the raw_input to "freeze" the dos pop-up. The book I'm reading is for Python 2.5 and I'm using Python 3.1
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Is there a way to stop Google Analytics counting development work as hits?
...bably see some of those pages a hundred times a day it will really skew my readings. Is there a way to turn it off from a particular IP address or is this something that should be built into my build process so it only gets added when I build for deployment?
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Why are two different concepts both called “heap”?
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Actually, reading about the way memory is allocated (see Buddy Blocks) reminds me of a heap in data structures.
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PostgreSQL function for last inserted ID
...is, you must resort to SELECT max(id) FROM table (of course, this will not read uncommitted inserts from other transactions).
Conversely, you should never use SELECT max(id) FROM table instead one of the 3 options above, to get the id just generated by your INSERT statement, because (apart from pe...
Run certain code every n seconds [duplicate]
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import threading
def printit():
threading.Timer(5.0, printit).start()
print "Hello, World!"
printit()
# continue with the rest of your code
https://docs.python.org/3/library/threading.html#timer-objects
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Using the Android Application class to persist data
...r approach would be to persist your data to internal storage file and then read it when your activity resumes.
UPDATE:
I got many negative feedbacks, so it is time to add a clarification. :) Well, initially I realy used a wrong assumption that the state is really important for the app. However if ...
How to set timer in android?
..., text3;
long starttime = 0;
//this posts a message to the main thread from our timertask
//and updates the textfield
final Handler h = new Handler(new Callback() {
@Override
public boolean handleMessage(Message msg) {
long millis = System.currentTimeMilli...
Programmer Puzzle: Encoding a chess board state throughout a game
...ch I wrote Programming Puzzles, Chess Positions and Huffman Coding. If you read through this I've determined that the only way to store a complete game state is by storing a complete list of moves. Read on for why. So I use a slightly simplified version of the problem for piece layout.
The Proble...
How do I sort unicode strings alphabetically in Python?
...s a list
corpus = [u"Art", u"Älg", u"Ved", u"Wasa"]
import locale
# this reads the environment and inits the right locale
locale.setlocale(locale.LC_ALL, "")
# alternatively, (but it's bad to hardcode)
# locale.setlocale(locale.LC_ALL, "sv_SE.UTF-8")
corpus.sort(cmp=locale.strcoll)
# in python2....