Tutorial by Examples: al

A type of dialog that contains an alert message, where initial focus goes to an element within the dialog. <div role="alertdialog"> <h1>Warning</h1> <div role="alert">Your session will expire in 60 seconds.</div> </div>

A dialog is an application window that is designed to interrupt the current processing of an application in order to prompt the user to enter information or require a response. <div role="dialog"> <p>Are you sure?</p> <button role="button">Yes</b...

In general, it is considered good practice to throw by value (rather than by pointer), but catch by (const) reference. try { // throw new std::runtime_error("Error!"); // Don't do this! // This creates an exception object // on the heap and would require you to catch the ...

componentWillUnmount() This method is called before a component is unmounted from the DOM. It is a good place to perform cleaning operations like: Removing event listeners. Clearing timers. Stopping sockets. Cleaning up redux states. componentWillUnmount(){ ... } An example of remo...

This is an example of a program written with manual memory management. You really shouldn't write your code like this, unless for some reason you can't use ARC (like if you need to support 32-bit). The example avoids @property notation to illustrate how you used to have to write getters and setters....

Register a production/sandbox account at https://dashboard.stripe.com/register Insert below code into your webpage where you want to have a checkout button. <form action="/charge" method="POST"> <script src="https://checkout.stripe.com/checkout.js" cl...

The installation instructions are available on IIS.net. See this for installing IIS 8.5

when an object is save/update/delete, check the associations and save/update/delete all the objects found.

when an object is save/update/delete, check the associations and save/update/delete all the objects found. In additional to that, when an object is removed from the association and not associated with another object (orphaned), also delete it.

When you install Oracle 11g or 12cR1, an older version of Apex is pre-installed. It is highly recommended to upgrade it to the latest version. Go to apex.oracle.com and download the latest version of Apex. Follow the documentation for the specific version to install it. Important Docu...

Add the following dependency to the build.gradle file: compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5' Add the following permissions to the AndroidManifest.xml file: <uses-permission android:name="android.permission.INTERNET" /> <uses-permiss...

If you need to delete a lot of records quickly, ActiveRecord gives .delete_all method. to be called directly on a model, to delete all records in that table, or a collection. Beware though, as .delete_all does not instantiate any object hence does not provide any callback (before_* and after_destroy...

package main import ( "fmt" "io/ioutil" ) func main() { files, err := ioutil.ReadDir(".") if err != nil { panic(err) } fmt.Println("Folders in the current directory:") for _, fileInfo := range files { ...

The command git svn dcommit will create a SVN revision for each of your local git commits. As with SVN, your local git history must be in sync with the latest changes in the SVN repository, so if the command fails, try performing a git svn rebase first.

Just use your local git repository as a normal git repo, with the normal git commands: git add FILE and git checkout -- FILE To stage/unstage a file git commit To save your changes. Those commits will be local and will not be "pushed" to the SVN repo, just like in a normal git reposito...

You can let I18n handle pluralization for you, just use count argument. You need to set up your locale file like this: # config/locales/en.yml en: online_users: one: "1 user is online" other: "%{count} users are online" And then use the key you just created by ...

In most cases, you may want to set I18n locale. One might want to set the locale for the current session, the current user, or based on a URL parameter This is easily achievable by implementing a before_action in one of your controllers, or in ApplicationController to have it in all of your controll...

Add one common horizontal line for all categorical variables # sample data df <- data.frame(x=('A', 'B'), y = c(3, 4)) p1 <- ggplot(df, aes(x=x, y=y)) + geom_bar(position = "dodge", stat = 'identity') + theme_bw() p1 + geom_hline(aes(yintercept=5), colour=...

To convert decimal number to binary format use base 2 Int32 Number = 15; Console.WriteLine(Convert.ToString(Number, 2)); //OUTPUT : 1111 To convert decimal number to octal format use base 8 int Number = 15; Console.WriteLine(Convert.ToString(Number, 8)); //OUTPUT : 17 To conv...

{foo: 'bar', biz: 'baz'}.keys # => [:foo, :biz] {foo: 'bar', biz: 'baz'}.values # => ["bar", "baz"] {foo: 'bar', biz: 'baz'}.to_a # => [[:foo, "bar"], [:biz, "baz"]] {foo: 'bar', biz: 'baz'}.each #<Enumerator: {:foo=>"bar", :b...