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Named placeholders in string formatting
In Python, when formatting string, I can fill placeholders by name rather than by position, like that:
19 Answers
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Grep characters before and after match?
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3 characters before and 4 characters after
$> echo "some123_string_and_another" | grep -o -P '.{0,3}string.{0,4}'
23_string_and
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Is there a way to ignore header lines in a UNIX sort?
...l, wrapping up the stdout so you can pipe it or redirect it as if it had come from a single command.
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How to check if a float value is a whole number
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To check if a float value is a whole number, use the float.is_integer() method:
>>> (1.0).is_integer()
True
>>> (1.555).is_integer()
False
The method was added to the float type in Python 2.6.
Take into account that in Python 2, 1/3 is 0 (floor division for integer operands!...
Remove unused references (!= “using”)
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*Note: see http://www.jetbrains.net/devnet/message/5244658 for another version of this answer.
Reading through the posts, it looks like there is some confusion as to the original question. Let me take a stab at it.
The original post is really asking the question: "...
How to add footnotes to GitHub-flavoured Markdown?
...tnotes in my experience. (Gosh darnit why can’t I make line breaks in comments.) [1] I.e. like Pandoc Mandoc footnotes minus the caret.
– Guildenstern
Nov 1 '16 at 20:09
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CSS Cell Margin
In my HTML document, I have a table with two columns and multiple rows. How can I increase the space in between the first and second column with css? I've tried applying "margin-right: 10px;" to each of the cells on the left hand side, but to no effect.
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Sort NSArray of date strings or objects
...NSMutableArray sortUsingSelector:] and pass @selector(compare:) as the parameter. The -[NSDate compare:] method will order dates in ascending order for you. This is simpler than creating an NSSortDescriptor, and much simpler than writing your own comparison function. (NSDate objects know how to comp...
How does java do modulus calculations with negative numbers?
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Both definitions of modulus of negative numbers are in use - some languages use one definition and some the other.
If you want to get a negative number for negative inputs then you can use this:
int r = x % n;
if (r > 0 && x < 0)
{
r -= n;
}
Likewise if you were usi...
How to get current page URL in MVC 3
I am using the Facebook comments plugin on a blog I am building. It has some FBXML tags that are interpreted by the facebook javascript that is referenced on the page.
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