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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...le matches are possible, the server must determine which of
them to use. It resolves this issue as follows: (...)
When a client attempts to connect, the server looks through the rows [of table mysql.user] in sorted order.
The server uses the first row that matches the client host name an...
Rails 4 multiple image or file upload using carrierwave
...ate uploader Avatar
Create post scaffold
rails generate scaffold post title:string
Create post_attachment scaffold
rails generate scaffold post_attachment post_id:integer avatar:string
rake db:migrate
In post.rb
class Post < ActiveRecord::Base
has_many :post_attachments
accepts_n...
Java Reflection: How to get the name of a variable?
Using Java Reflection, is it possible to get the name of a local variable? For example, if I have this:
8 Answers
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IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
...he proper solution was (as seen in the comments) to use :
transaction.commitAllowingStateLoss();
when adding or performing the FragmentTransaction that was causing the Exception.
share
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iPhone UITextField - Change placeholder text color
I'd like to change the color of the placeholder text I set in my UITextField controls, to make it black.
32 Answers
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Genymotion, “Unable to load VirtualBox engine.” on Mavericks. VBox is setup correctly
...
I had the same problem and solved it by running the following command:
sudo /Library/StartupItems/VirtualBox/VirtualBox restart
In later versions, the command is
sudo /Library/Application\ Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh restart
M...
Getting the names of all files in a directory with PHP
For some reason, I keep getting a '1' for the file names with this code:
15 Answers
15...
How do I convert a String object into a Hash object?
... by calling Hash#inspect can be turned back into a hash by calling eval on it. However, this requires the same to be true of all of the objects in the hash.
If I start with the hash {:a => Object.new}, then its string representation is "{:a=>#<Object:0x7f66b65cf4d0>}", and I can't use e...
Android NDK C++ JNI (no implementation found for native…)
I'm trying to use the NDK with C++ and can't seem to get the method naming convention correct. my native method is as follows:
...
Getting a random value from a JavaScript array
...
It is a simple one-liner
const randomElement = array[Math.floor(Math.random() * array.length)];
Example
const months = ["January", "February", "March", "April", "May", "June", "July"];
const random = Math.floor(Math.ran...