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Convert light frequency to RGB?
... a RGB color value that is suitable to be displayed on a
* monitor
*
* @param wavelength wavelength in nm
* @return RGB color encoded in int. each color is represented with 8 bits and has a layout of
* 00000000RRRRRRRRGGGGGGGGBBBBBBBB where MSB is at the leftmost
*/
public static int wavelengt...
Java optional parameters
How do I use optional parameters in Java? What specification supports optional parameters?
17 Answers
...
Rails Observer Alternatives for 4.0
...stsController < ApplicationController
def create
@post = Post.new(params[:post])
@post.subscribe(PusherListener.new)
@post.subscribe(ActivityListener.new)
@post.subscribe(StatisticsListener.new)
@post.on(:create_post_successful) { |post| redirect_to post }
@post.on(:cr...
Get the index of the nth occurrence of a string?
...x, int nth)
{
if (nth < 1)
throw new NotSupportedException("Param 'nth' must be greater than 0!");
if (nth == 1)
return input.IndexOf(value, startIndex);
var idx = input.IndexOf(value, startIndex);
if (idx == -1)
return -1;
return input.IndexOfNth(value...
How to get current path with query string using Capybara
...rch=name but you only care that it's on the /people page regardless of the param, you can send the only_path option:
expect(page).to have_current_path(people_path, only_path: true)
Additionally, if you want to compare the entire URL:
expect(page).to have_current_path(people_url, url: true)
Cre...
Using PowerShell to write a file in UTF-8 without the BOM
... strings.
However, it is not a complete implementation of all Out-String parameters:
* Only a literal output path is supported, and only as a parameter.
* -Force is not supported.
Caveat: *All* pipeline input is buffered before writing output starts,
but the string representations...
Getting parts of a URL (Regex)
...
A single regex to parse and breakup a
full URL including query parameters
and anchors e.g.
https://www.google.com/dir/1/2/search.html?arg=0-a&arg1=1-b&arg3-c#hash
^((http[s]?|ftp):\/)?\/?([^:\/\s]+)((\/\w+)*\/)([\w\-\.]+[^#?\s]+)(.*)?(#[\w\-]+)?$
RexEx positions...
What is the simplest and most robust way to get the user's current location on Android?
...alize starting values and starting best location listeners
*
* @param Context ctx
* @param LocationResult result
*/
public void init(Context ctx, LocationResult result){
context = ctx;
locationResult = result;
myLocationManager = (LocationManager) co...
Change Volley timeout duration
...ry a particular request when a timeout happens.
It deals with these three parameters
Timeout - Specifies Socket Timeout in millis per every retry attempt.
Number Of Retries - Number of times retry is attempted.
Back Off Multiplier - A multiplier which is used to determine exponential time set to ...
What is the purpose of Flask's context stacks?
... an http request comes in and the WSGI server calls the app with the usual params...
app(environ, start_response) # aka app.__call__(environ, start_response)
This is roughly what happens in the app...
def Flask(object):
# ...
def __call__(self, environ, start_response):
return sel...