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A gentle tutorial to Emacs/Swank/Paredit for Clojure
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[Edit from non-author: this is from 2010, and the process has been significantly simplified since May 2011. I'll add a post to this answer with my setup notes as of Feb 2012.]
You'll need to put together a few pieces: Emacs, SLIME (which works perfectly well with Cl...
Get a pixel from HTML Canvas?
....getContext('2d');
// Get the CanvasPixelArray from the given coordinates and dimensions.
var imgd = context.getImageData(x, y, width, height);
var pix = imgd.data;
// Loop over each pixel and invert the color.
for (var i = 0, n = pix.length; i < n; i += 4) {
pix[i ] = 255 - pix[i ]; // r...
Recommended SQL database design for tags or tagging [closed]
...rd of a few ways to implement tagging; using a mapping table between TagID and ItemID (makes sense to me, but does it scale?), adding a fixed number of possible TagID columns to ItemID (seems like a bad idea), Keeping tags in a text column that's comma separated (sounds crazy but could work). I've e...
Maintain/Save/Restore scroll position when returning to a ListView
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Try this:
// save index and top position
int index = mList.getFirstVisiblePosition();
View v = mList.getChildAt(0);
int top = (v == null) ? 0 : (v.getTop() - mList.getPaddingTop());
// ...
// restore index and position
mList.setSelectionFromTop(in...
How do I wrap a selection with an HTML tag in Visual Studio?
...is available in Visual Studio 2017 as well, but you must have the "ASP.NET and Web Development" workload installed.
Example
Shift+Alt+W > p > Enter
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Add and remove multiple classes in jQuery
I'm trying to add and remove multiple classes on a text field by clicking different radio buttons. I'm not able to remove the unwanted classes while switching between different radio buttons.
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Create a git patch from the uncommitted changes in the current working directory
...anges.
git diff --cached for staged changes.
git diff HEAD for both staged and unstaged changes.
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Performance of static methods vs instance methods
...g to the performance characteristics of static methods vs instance methods and their scalability. Assume for this scenario that all class definitions are in a single assembly and that multiple discrete pointer types are required.
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Change Git repository directory location.
...o do to move the repo files to C:\dir1 ? I can obviously physically copy and paste the files, but what do I need to do on the Git side?
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Why is there no std::stou?
... pat answer would be that the C library has no corresponding “strtou”, and the C++11 string functions are all just thinly veiled wrappers around the C library functions: The std::sto* functions mirror strto*, and the std::to_string functions use sprintf.
Edit: As KennyTM points out, both stoi...