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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 ...
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"
...
Is there “0b” or something similar to represent a binary number in Javascript
...gned a number that looks like it's in binary, but is actually being parsed base 10. The parseInt function expects a string as the first arg, so it turns it into "1111" (base 10 representation), then re-parses it as if it were base 2.
– Ted Hopp
Sep 12 '12 at 21...
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
...
When do you use Java's @Override annotation and why?
... 1.6 for @Overrides on methods coming from interfaces, bugs.sun.com/bugdatabase/view_bug.do?bug_id=5008260 seems to be the corresponding bug. (Thanks for pointing it out, Dave L.!)
– Henrik Heimbuerger
Jan 23 '10 at 18:23
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How do I overload the square-bracket operator in C#?
... what you're doing, you might find it more appropriate to do: get { return base[i]; } set { base[i] = value; }
– MikeBaz - MSFT
Oct 4 '12 at 21:58
7
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Avoid Android Lint complains about not-translated string
... this gives 'non translatable resources should only be defined in the base values /folder.
– anon58192932
Mar 5 '13 at 21:25
2
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