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For more detail, see Property and Item Evaluation Order on the MSDN documentation page Comparing Properties and Items.

add_action( $tag, $function_to_add ) add_action( $tag, $function_to_add, $priority ) add_action( $tag, $function_to_add, $priority, $accepted_args ) ParameterDetails$tag(string) The name of the action to which the procedure $function_to_add will be hooked.$function_to_add(callable) The cal...

if (condition) { ... } if (condition) { ... } else { ... } if (condition) { ... } else if (condition) { ... } else { ... } // Braces are optional for single line statements if (condition) ... else if (condition) ... else ... switch (expression) { case pattern: ... default: ... } condition ?...

AnnotationPurpose@InheritanceSpecifies type of inheritance strategy used@DiscriminatorColumnSpecifies a column in database which will be used to identify different entities based on certain ID assigned to each entity@MappedSuperClassmapped super classes are not persistent and only used to hold stat...

The WriteToServer and WriteToServerAsync have overloads that accept IDataReader (seen in the examples), DataTable, and DataRow arrays (DataRow[]) as the source of the data for the Bulk Copy.

https://gielberkers.com/magento-2-why-use-rewrites-when-you-can-use-plugins/ http://devdocs.magento.com/guides/v2.0/extension-dev-guide/plugins.html

parameterdescriptioncontrolThis is the control that is being validated. Typically you will want to see if control.value meets some criteria.

public static int Input.touchCount public static Touch Input.GetTouch(int index)