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Adding two numbers concatenates them instead of calculating the sum
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350
They are actually strings, not numbers. The easiest way to produce a number from a string is to ...
Format timedelta to string
...with str(). Here's an example:
import datetime
start = datetime.datetime(2009,2,10,14,00)
end = datetime.datetime(2009,2,10,16,00)
delta = end-start
print(str(delta))
# prints 2:00:00
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Split a string by spaces — preserving quoted substrings — in Python
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407
You want split, from the built-in shlex module.
>>> import shlex
>>> shlex.s...
How do I make a transparent border with CSS?
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108
You can use "transparent" as a colour. In some versions of IE, that comes up as black, but I've...
PostgreSQL error: Fatal: role “username” does not exist
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806
Use the operating system user postgres to create your database - as long as you haven't set up ...
Outlook autocleaning my line breaks and screwing up my email format
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answered Oct 29 '08 at 18:43
Alex BAlex B
23.3k1212 gold badges6060 silver badges8383 bronze badges
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How to grep and replace
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On OS X 10.10 Terminal, a proper extension string to parameter -i is required. For example, find /path/to/files -type f -exec sed -i "" "s/oldstring/new string/g" {} \; Anyway, providing empty string still creates a backup file unlike...
jQuery OR Selector?
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answered Feb 15 '10 at 3:53
Daniel A. WhiteDaniel A. White
170k4242 gold badges334334 silver badges403403 bronze badges
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Set NOW() as Default Value for datetime datatype?
...an/5.7/en/timestamp-initialization.html
http://optimize-this.blogspot.com/2012/04/datetime-default-now-finally-available.html
Prior to 5.6.5, you need to use the TIMESTAMP data type, which automatically updates whenever the record is modified. Unfortunately, however, only one auto-updated TIMESTAMP...
How to create fixed space and flexible space bar button items programmatically?
...UIBarButtonSystemItemFixedSpace target:nil action:nil];
fixedItem.width = 20.0f; // or whatever you want
UIBarButtonItem *flexibleItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
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