Tutorial by Topics: se

$this->load->library('library_name'); $this->library_name->function_name(); $this->load->library('cart'); # for helper $this->load->helper('helperName'); $this->cart->insert($Array);

A reminder: DT[where, select|update|do, by] syntax is used to work with columns of a data.table. The "where" part is the i argument The "select|update|do" part is the j argument These two arguments are usually passed by position instead of by name.

The special symbol .SD is available in j of DT[i,j,by], capturing the Subset of Data for each by group surviving the filter, i. .SDcols is a helper. Type ?`special-symbols` for the official docs. A reminder: DT[where, select|update|do, by] syntax is used to work with columns of a data.table. T...

Azure Service Fabric is one of the PaaS services offered by Azure. It is based on the notion of containers and services: unlike Compute services (Web Roles and Worker roles), your code does not run inside one (or more) Virtual Machines, but instead they are run inside a container, sharing it with...

The INSERT INTO statement is used to insert new records in a table.

static_assert( bool_constexpr, message ) static_assert( bool_constexpr ) /* Since C++17 */ ParameterDetailsbool_constexprExpression to checkmessageMessage to print when bool_constexpr is false Unlike runtime assertions, static assertions are checked at compile-time and are also enforced w...

To avoid serialization problems, particularly in distributed environments (e.g. Apache Spark), it is a best practice to implement the Serializable trait for type class instances.

Firebase is a mobile and web application platform with tools and infrastructure designed to help developers build high-quality apps. Features Firebase Cloud Messaging, Firebase Auth, Realtime Database, Firebase Storage, Firebase Hosting, Firebase Test Lab for Android, Firebase Crash Reporting. ...

Session["Session_Key"] = Obj_Value; HTTP is stateless. ASP.NET session state is a framework that facilitates maintaining state between HTTP page requests. Session differs from the class level variables in its ability to remain available across post-backs and different pages. For ...

Shows how a sqoop script could be used to import data from various datastores/databases.

MSSQL Syntax: DROP DATABASE [ IF EXISTS ] { database_name | database_snapshot_name } [ ,...n ] [;] MySQL Syntax: DROP {DATABASE | SCHEMA} [IF EXISTS] db_name DROP DATABASE is used for dropping a database from SQL. Be sure to create a backup of your database before dropping it to prevent ...