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How to get the index of an item in a list in a single step?
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EDIT: If you're only using a List<> and you only need the index, then List.FindIndex is indeed the best approach. I'll leave this answer here for those who need anything different (e.g. on top of any IEnumerable<>).
Use the overload of Select which takes...
Best way to convert text files between character sets?
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Stand-alone utility approach
iconv -f ISO-8859-1 -t UTF-8 in.txt > out.txt
-f ENCODING the encoding of the input
-t ENCODING the encoding of the output
You don't have to specify either of these arguments. They will de...
Most efficient way to reverse a numpy array
...g a view into the original array. You can then change the original array, and the view will update to reflect the changes.
Are you re-creating the view more often than you need to? You should be able to do something like this:
arr = np.array(some_sequence)
reversed_arr = arr[::-1]
do_something(...
In Java, how do I parse XML as a String instead of a file?
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@shsteimer I am passing in xml string and it is returning null. It does not throw any exception. What must be wrong?
– sattu
Jun 28 '13 at 20:47
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HTML.ActionLink vs Url.Action in ASP.NET Razor
...tes:
<a href="/somecontroller/someaction/123">link text</a>
and Url.Action("someaction", "somecontroller", new { id = "123" }) generates:
/somecontroller/someaction/123
There is also Html.Action which executes a child controller action.
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Debug vs. Release performance
...ly true. In debug mode, the compiler emits debug symbols for all variables and compiles the code as is. In release mode, some optimizations are included:
unused variables do not get compiled at all
some loop variables are taken out of the loop by the compiler if they are proven to be invariants
cod...
How to avoid “cannot load such file — utils/popen” from homebrew on OSX
...al
If it still doesn't work, use these steps inside a terminal session and everything will be fine:
cd /usr/local/Library/Homebrew
git reset --hard
git clean -df
brew update
This may be because homebrew is not updated.
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How can I properly handle 404 in ASP.NET MVC?
.../shay/archive/2009/03/06/real-world-error-hadnling-in-asp-net-mvc-rc2.aspx and works in ASP.net MVC 1.0 as well
Here's how I handle http exceptions:
protected void Application_Error(object sender, EventArgs e)
{
Exception exception = Server.GetLastError();
// Log the exception.
ILogger ...
Quickly create a large file on a Linux system
...her answers is a good solution, but it is slow for this purpose. In Linux (and other POSIX systems), we have fallocate, which uses the desired space without having to actually writing to it, works with most modern disk based file systems, very fast:
For example:
fallocate -l 10G gentoo_root.img
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Split a List into smaller lists of N size
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So if I have a List length zillion, and I want to split into smaller lists Length 30, and from every smaller list I only want to Take(1), then I still create lists of 30 items of which I throw away 29 items. This can be done smarter!
– Har...