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How to determine the longest increasing subsequence using dynamic programming?
...tEnd in a loop using prev[bestEnd]. The -1 value is a sign to stop.
OK, now to the more efficient O(N log N) solution:
Let S[pos] be defined as the smallest integer that ends an increasing sequence of length pos. Now iterate through every integer X of the input set and do the following:
If X &...
Converting newline formatting from Mac to Windows
...
For anyone that comes across this now, the Homebrew formula is now called dos2unix. You'll want to brew install dos2unix.
– Geoff
Apr 26 '16 at 19:06
...
Converting datetime.date to UTC timestamp in Python
...eturn (td.microseconds + (td.seconds + td.days * 86400) * 10**6) / 10**6
now = datetime.utcnow()
print now
print totimestamp(now)
Beware of floating-point issues.
Output
2012-01-08 15:34:10.022403
1326036850.02
How to convert an aware datetime object to POSIX timestamp
assert dt.tzinfo is n...
How to use ssh agent forwarding with “vagrant ssh”?
... user to "git clone" but I can not use "root" user to "git clone". Do you know what seem to be the issue? Thanks
– Nam Nguyen
Jan 20 '14 at 8:31
7
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Remove unwanted parts from strings in a column
...ings in a column?
6 years after the original question was posted, pandas now has a good number of "vectorised" string functions that can succinctly perform these string manipulation operations.
This answer will explore some of these string functions, suggest faster alternatives, and go into a ti...
How to make a Python script run like a service or daemon in Linux
...ike so:
import os, sys
fpid = os.fork()
if fpid!=0:
# Running as daemon now. PID is fpid
sys.exit(0)
Of course you also need to implement an endless loop, like
while 1:
do_your_check()
sleep(5)
Hope this get's you started.
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How to limit the amount of concurrent async I/O operations?
...hould be using since it's more performant than the original Semaphore), it now boasts the WaitAsync(...) series of overloads, with all of the expected arguments - timeout intervals, cancellation tokens, all of your usual scheduling friends :)
Stephen's also written a more recent blog post about the...
How to find the size of localStorage
...n("\n"));
P.S. Snippets are updated according to request in the comment. Now the calculation includes the length of the key itself.
Each length is multiplied by 2 because the char in javascript stores as UTF-16 (occupies 2 bytes)
P.P.S. Should work both in Chrome and Firefox.
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Unresolved Import Issues with PyDev and Eclipse
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I tried this and now I can't start my DEV server. How do I replace the file?
– Lee Loftiss
May 2 '19 at 13:49
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How can I reverse a NSArray in Objective-C?
... danielpunkass's solution. I used it thinking it was a great shortcut, but now I've just spent 3 hours trying to figure out why my A* algorithm was broken. It's because it returns the wrong set!
– Georg Schölly
Mar 12 '10 at 6:23
...