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Rounding up to next power of 2
...bit value:
Round up to the next highest power of 2
unsigned int v; // compute the next highest power of 2 of 32-bit v
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
The extension to other widths should be obvious.
...
Detecting touch screen devices with Javascript
...ies you could hook into them to write you mobile specific code.
See here: http://www.forabeautifulweb.com/blog/about/hardboiled_css3_media_queries/
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How to initialize std::vector from C-style array?
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...gem so thought I'd share as it was inspired by this post.
https://github.com/appoxy/aws/blob/master/lib/awsbase/require_relative.rb
unless Kernel.respond_to?(:require_relative)
module Kernel
def require_relative(path)
require File.join(File.dirname(caller[0]), path.to_str)
end
e...
Python group by
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Forward declaring an enum in C++
...ng enum types has been proposed and accepted. You can see the proposal at http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2764.pdf
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How can I convert an image into Base64 string using JavaScript?
...u can choose from:
1. Approach: FileReader
Load the image as blob via XMLHttpRequest and use the FileReader API to convert it to a dataURL:
function toDataURL(url, callback) {
var xhr = new XMLHttpRequest();
xhr.onload = function() {
var reader = new FileReader();
reader.onloa...
What's the Linq to SQL equivalent to TOP or LIMIT/OFFSET?
... that Foo is a column in MyTable that gets mapped to a property name.
See http://blogs.msdn.com/vbteam/archive/2008/01/08/converting-sql-to-linq-part-7-union-top-subqueries-bill-horst.aspx for more detail.
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How to print the values of slices
...prefer fmt.Printf("%+q", arr) which will print
["some" "values" "list"]
https://play.golang.org/p/XHfkENNQAKb
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How do I get a string format of the current date time, in python?
...ng the raw value as {}, use formatting to obtain the correct date format.
https://docs.python.org/3/library/string.html#formatexamples
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