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Why use symbols as hash keys in Ruby?
...access a hash, Ruby always applies a hash-function to compute a "hash-key" from whatever key you use. You can imagine something like an MD5-hash. And then Ruby compares those "hashed keys" against each other.
Long answer:
https://web.archive.org/web/20180709094450/http://www.reactive.io/tips/2009...
How do I provide custom cast support for my class?
...new DataValueNullException();
return x.iVal;
}
For your example, say from your custom Type (MyType --> byte[] will always work):
public static implicit operator byte[] (MyType x)
{
byte[] ba = // put code here to convert x into a byte[]
return ba;
}
or
public static explicit ope...
Remove warning messages in PHP
...an't fix the problem that generates the warning nor (2) hide your warnings from end users via php error_reporting... Hiding warnings from your developers is NOT a solution.
– Joshua Kissoon
Jun 26 '14 at 11:42
...
Can't access RabbitMQ web management interface after fresh install
...is or this RabbitMQ 3.3.1 can not login with guest/guest
# remove guest from loopback_users in rabbitmq.config like this
[{rabbit, [{loopback_users, []}]}].
# It is danger for default user and default password for remote access
# better to change password
rabbitmqctl change_password guest NEWPA...
Android: how to check if a View inside of ScrollView is visible?
...#getDrawingRect on the ScrollView instead of calculating explicitly.
Code from View#getDrawingRect:
public void getDrawingRect(Rect outRect) {
outRect.left = mScrollX;
outRect.top = mScrollY;
outRect.right = mScrollX + (mRight - mLeft);
outRect.bottom = mScrollY + ...
What are some popular naming conventions for Unit Tests? [closed]
...t state is.
Specific about the expected behaviour.
What more do you need from a test name?
Contrary to Ray's answer I don't think the Test prefix is necessary. It's test code, we know that. If you need to do this to identify the code, then you have bigger problems, your test code should not be mi...
How to properly overload the
...ode was left on a shelf for 6 months and in between I upgraded my computer from debian etch to lenny (g++ (Debian 4.3.2-1.1) 4.3.2
) however I have the same problem on a Ubuntu system with the same g++.
...
How to undo a git pull?
...--hard (2)
$ git pull . topic/branch (3)
Updating from 41223... to 13134...
Fast-forward
$ git reset --hard ORIG_HEAD (4)
Checkout this: HEAD and ORIG_HEAD in Git for more.
share
|
...
Can local storage ever be considered secure? [closed]
...Library. There are inherent weaknesses, though (as referred to in the link from @ircmaxell's answer):
Lack of entropy / random number generation;
Lack of a secure keystore i.e. the private key must be password-protected if stored locally, or stored on the server (which bars offline access);
Lack o...
How to provide user name and password when connecting to a network share
... {
File.Copy(from, to);
}
});
Step 2
The Helper file which does a magic
using System;
using System.Runtime.ConstrainedExecution;
using System.Runtime.InteropServices;
using S...