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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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edited Aug 2 '17 at 10:42
a_horse_with_no_name
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How to determine programmatically whether a particular process is 32-bit or 64-bit
...ular application/process (note: not the current process) is running in 32-bit or 64-bit mode?
7 Answers
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How do I URL encode a string
I have a URL string ( NSString ) with spaces and & characters. How do I url encode the entire string (including the & ampersand character and spaces)?
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Eclipse Kepler for OS X Mavericks request Java SE 6
...OS X Mavericks , and I have downloaded Eclipse Kepler , but if I execute it, gives me this message:
7 Answers
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Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
...ipts which use this at the top of the script. In what cases one should use it?
4 Answers
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Why do you create a View in a database?
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A view provides several benefits.
1. Views can hide complexity
If you have a query that requires joining several tables, or has complex logic or calculations, you can code all that logic into a view, then select from the view just like you would a tabl...
How to continue a Docker container which has exited
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You can restart an existing container after it exited and your changes are still there.
docker start `docker ps -q -l` # restart it in the background
docker attach `docker ps -q -l` # reattach the terminal & stdin
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What does 'synchronized' mean?
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The synchronized keyword is all about different threads reading and writing to the same variables, objects and resources. This is not a trivial topic in Java, but here is a quote from Sun:
synchronized methods enable a simple
strategy for preventing thread
interference and memory consi...
Fragments onResume from back stack
I'm using the compatibility package to use Fragments with Android 2.2.
When using fragments, and adding transitions between them to the backstack, I'd like to achieve the same behavior of onResume of an activity, i.e., whenever a fragment is brought to "foreground" (visible to the user) after popin...
Duplicate log output when using Python logging module
...ton. (Documentation)
The problem is that every time you call myLogger(), it's adding another handler to the instance, which causes the duplicate logs.
Perhaps something like this?
import os
import time
import datetime
import logging
loggers = {}
def myLogger(name):
global loggers
if l...