Tutorial by Examples: en

A comment starts with a forward slash followed immediately by an asterisk (/*), and ends as soon as an asterisk immediately followed by a forward slash (*/) is encountered. Everything in between these character combinations is a comment and is treated as a blank (basically ignored) by the compiler. ...

C99 C99 introduced the use of C++-style single-line comments. This type of comment starts with two forward slashes and runs to the end of a line: // this is a comment This type of comment does not allow multi-line comments, though it is possible to make a comment block by adding several single ...

You can add comment and status to order. Get order : $orderid = 12345; $order = Mage::getModel('sales/order')->load($orderid); And add comment: //$isNotify means you want to notify customer or not. $order->addStatusToHistory($status, $message, $isNotify); $order->save()

Install by using npm install --save react-native-router-flux In react-native-router-flux, each route is called a <Scene> <Scene key="home" component={LogIn} title="Home" initial /> key A unique string that can be used to refer to the particular scene. componen...

<div th:if="*{userMessage!=null and #strings.length(userMessage)>0}"> <label th:text = "*{userMessage}"/> </div>

Large chunks of code can also be "commented out" using the preprocessor directives #if 0 and #endif. This is useful when the code contains multi-line comments that otherwise would not nest. #if 0 /* Starts the "comment", anything from here on is removed by preprocessor */ /*...

defmodule Selection do def sort(list) when is_list(list) do do_selection(list, []) end def do_selection([head|[]], acc) do acc ++ [head] end def do_selection(list, acc) do min = min(list) do_selection(:lists.delete(min, list), acc ++ [min]) end defp m...

If we want to look at a scene as if we had photographed it with a camera, we must first define some things: The position from which the scene is viewed, the eye position pos. The point we look at in the scene (target). It is also common to define the direction in which we look. Technically we n...

To define your own menu, create an XML file inside your project's res/menu/ directory and build the menu with the following elements: <menu> : Defines a Menu, which holds all the menu items. <item> : Creates a MenuItem, which represents a single item in a menu. We can also create a n...

Drupal console brings scaffolding to the Drupal ecosystem and makes it easy to generate a content entity. In most instances you will find it easier to work with a custom entity within a custom module. Step 1 : Generate a module vendor/bin/drupal generate:module Follow the prompts and create yo...

The most basic implementation of a union-find data structure consists of an array parent storing the a parent element for every element of the structure. Following these parent 'pointers' for an element i leads us to the representative j = find(i) of the set containing i, where parent[j] = j holds....

If we do many merge operations on a union-find data structure, the paths represented by the parent pointers might be quite long. Path compression, as already described in the theory part, is a simple way of mitigating this issue. We might try to do path compression on the whole data structure after...

In our current implementation of merge, we always choose the left set to be the child of the right set, without taking the size of the sets into consideration. Without this restriction, the paths (without path compression) from an element to its representative might be quite long, thus leading to la...

$ sqoop import --connect jdbc:mysql://10.0.0.100/hadooptest --username hadoopuser -P --table table_name --hive-import --hive-table hive_table_name

There are 2 way of enabling internal debugging in log4net: Specify the log4net.Internal.Debug option in the application's config file Enable log4net's internal debug programmatically Specify the log4net.Internal.Debug option in the application's config file This is the preferred method to en...

Some of the log4net appenders are buffered appenders. These appenders will only log when a certain amount of messages are logged. Some samples are the SmtpAppender, RemotingAppender or the AdoNetAppender. These appenders have a setting BufferSize: <bufferSize value="100" /> This ...

If you have a file appender, make sure you are writing to a location where the user is allowed to create and update the files. If not the logging will fail. You can check this when you have internal debugging enabled.

There is a limitation in Acumatica's SOAP Contract-Based API allowing to download attachments only for a top-level entity. Any attempt to use the GetFiles() method to get the attachments of a detail entity will, unfortunately, result in the error "Entity without screen binding cannot be used as...

From this website, the OP has noticed a problem. Cause Consider the following code snippet. if 1==1 ( set /a result = 2*(3+4) ) At your first glance, you may think CMD.exe would process it like so: The condition is true, execute code block Set variable result's value to 14 Continu...

Another heuristic commonly used instead of union by size is the union by rank heuristic Its basic idea is that we don't actually need to store the exact size of the sets, an approximation of the size (in this case: roughly the logarithm of the set's size) suffices to achieve the same speed as union...