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Shorter syntax for casting from a List to a List?
... }
}
public class Elephant : Animal
{
public Elephant(string name) : base(name){}
}
public class Zebra : Animal
{
public Zebra(string name) : base(name) { }
}
When working with a collection of mixed types:
var mixedAnimals = new Animal[]
{
new Zebra("Zed"),
new Elephant("Ellie...
How to prevent browser page caching in Rails
...ler.rb
After Rails 5:
class ApplicationController < ActionController::Base
before_action :set_cache_headers
private
def set_cache_headers
response.headers["Cache-Control"] = "no-cache, no-store"
response.headers["Pragma"] = "no-cache"
response.headers["Expires"] = "Mon, 01 ...
How would one write object-oriented code in C? [closed]
...n (void) {
int status;
tCommClass commTcp, commHttp;
// Same 'base' class but initialised to different sub-classes.
tcpInit (&commTcp);
httpInit (&commHttp);
// Called in exactly the same manner.
status = (commTcp.open)(&commTcp, "bigiron.box.com:5000");
...
Django URL Redirect
...
You can try the Class Based View called RedirectView
from django.views.generic.base import RedirectView
urlpatterns = patterns('',
url(r'^$', 'macmonster.views.home'),
#url(r'^macmon_home$', 'macmonster.views.home'),
url(r'^macmon_ou...
Save image from URL by paperclip
...
Here is a simple way:
require "open-uri"
class User < ActiveRecord::Base
has_attached_file :picture
def picture_from_url(url)
self.picture = open(url)
end
end
Then simply :
user.picture_from_url "http://www.google.com/images/logos/ps_logo2.png"
...
Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...g>
Note thus that you should not use both ways. Use either annotation based configuarion or XML based configuration. When you have both, then XML based configuration will override annotation based configuration.
Verifying the build/deployment
In case you're using a build tool such as Eclipse ...
How to achieve function overloading in C?
...at it can be inserted by the C preprocessor and choose a result expression based on the type of the arguments passed to the controlling macro. So (example from the C standard):
#define cbrt(X) _Generic((X), \
long double: cbrtl, \
def...
Is there an equivalent to e.PageX position for 'touchstart' event as there is for click event?
...
I use this simple function for JQuery based project
var pointerEventToXY = function(e){
var out = {x:0, y:0};
if(e.type == 'touchstart' || e.type == 'touchmove' || e.type == 'touchend' || e.type == 'touchcancel'){
var touch = e.or...
ActiveMQ or RabbitMQ or ZeroMQ or [closed]
...ing
written by Blaine Cook at Twitter
Starling is a Message Queue Server based on MemCached
written in Ruby
stores jobs in memory (message queue)
documentation: some good tutorials, for example the railscast about starling and workling or this blog post about starling
Kestrel
written by Robey ...
Object of custom type as dictionary key
...s require you to "freeze" them first to avoid mutability (mutating a value-based object that has been used as a key in a python dictionary is not permitted)
– 6502
Apr 24 '16 at 7:22
...