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How to remove an element from a list by index
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1820
Use del and specify the index of the element you want to delete:
>>> a = [0, 1, 2, 3, ...
String concatenation vs. string substitution in Python
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... return "%s%s/%d" % (DOMAIN, QUESTIONS, n)
...
>>> so_q_sub(1000)
'http://stackoverflow.com/questions/1000'
>>> def so_q_cat(n):
... return DOMAIN + QUESTIONS + '/' + str(n)
...
>>> so_q_cat(1000)
'http://stackoverflow.com/questions/1000'
>>> t1 = timeit.Tim...
How to remove leading zeros using C#
...e ones that convert through IntXX) methods will not work for:
String s = "005780327584329067506780657065786378061754654532164953264952469215462934562914562194562149516249516294563219437859043758430587066748932647329814687194673219673294677438907385032758065763278963247982360675680570678407806473296...
Bash empty array expansion with `set -u`
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20
The only safe idiom is ${arr[@]+"${arr[@]}"}
This is already the recommendation in ikegami's an...
How to hide first section header in UITableView (grouped style)
...hat seems reasonably clean to me. So I'm answering my own question.
Since 0 as the first section header's height doesn't work, I return 1. Then I use the contentInset to hide that height underneath the navigation bar.
Objective-C:
- (CGFloat) tableView:(UITableView *)tableView heightForHeaderInSe...
Providing white space in a Swing GUI
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+200
Using various LayoutManagers one can provide spacing between various components.
1.) BorderLayout :
Overloaded Constructor : Bor...
How to determine if a number is a prime with regex?
...lly, is there zero or one character-- or, per what I mentioned above, n == 0 || n == 1. If we have the match, then return the negation of that. This corresponds with the fact that zero and one are NOT prime.
(..+?)\\1+
The second part of the regex is a little trickier, relying on groups and backr...
Format decimal for percentage values?
...se the P format string. This will vary by culture:
String.Format("Value: {0:P2}.", 0.8526) // formats as 85.26 % (varies by culture)
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MySQL Update Inner Join tables query
I have no idea what the problem is. Using MySQL 5.0 I get a compile error when attempting to run the following MySQL update query:
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How to get correct timestamp in C#
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Your mistake is using new DateTime(), which returns January 1, 0001 at 00:00:00.000 instead of current date and time. The correct syntax to get current date and time is DateTime.Now, so change this:
String timeStamp = GetTimestamp(new DateTime());
to this:
String timeStamp = GetTimes...