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Extract a regular expression match
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Use the new stringr package which wraps all the existing regular expression operates in a consistent syntax and adds a few that are missing:
library(stringr)
str_locate("aaa12xxx", "[0-9]+")
# start end
# [1,] 4 5
str_extract("aaa12xxx"...
Regular expression for a hexadecimal number?
...e shortified to /0x[\da-f]/i, but otherwise, +1.
– Niklas B.
Feb 10 '12 at 1:13
20
@NiklasB. Your...
Dynamic SELECT TOP @var In SQL Server
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SELECT TOP (@count) * FROM SomeTable
This will only work with SQL 2005+
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Convert Existing Eclipse Project to Maven Project
For a project at work, we're considering using the Maven plugin for Eclipse to automate our builds. Right now the procedure is far more complicated than it ought to be, and we're hoping that Maven will simplify things to a one-click build.
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How do I set the offset for ScrollSpy in Bootstrap?
...is means that scrolling to the proper place is up to you.
Try this, it works for me: add an event handler for the navigation clicks.
var offset = 80;
$('.navbar li a').click(function(event) {
event.preventDefault();
$($(this).attr('href'))[0].scrollIntoView();
scrollBy(0, -offset);
})...
jQuery select by attribute using AND and OR operators
I'm thinking about, if it is possible in jQuery to select elements by named attributes using AND and OR.
8 Answers
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How can I make the computer beep in C#?
How do I make the computer's internal speaker beep in C# without external speakers?
6 Answers
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R memory management / cannot allocate vector of size n Mb
...ly, or can the matrix be sparse? There is good support in R (see Matrix package for e.g.) for sparse matrices.
Keep all other processes and objects in R to a minimum when you need to make objects of this size. Use gc() to clear now unused memory, or, better only create the object you need in one s...
How to generate a number of most distinctive colors in R?
... number n , how can I get n number of MOST distinctive colors in R? Thanks.
10 Answers
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What does InitializeComponent() do, and how does it work in WPF?
What does InitializeComponent() do, and how does it work in WPF?
2 Answers
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