Tutorial by Topics

These examples introduce the most used commands of Perl to manipulate Excel via Win32::OLE module. $Sheet->Range(Cell1,[Cell2]) #Select a cell or a range of cells $Sheet->Cells(rowIndex, columnIndex) #Select a cell by index of row and column ParametersDetailsCell1 (required)The na...

NULL in SQL, as well as programming in general, means literally "nothing". In SQL, it is easier to understand as "the absence of any value". It is important to distinguish it from seemingly empty values, such as the empty string '' or the number 0, neither of which are actually ...

HTTP APIs use a wide spectrum of HTTP verbs and typically return JSON or XML responses.

Cross-origin resource sharing is designed to allow dynamic requests between domains, often using techniques such as AJAX. While the scripting does most of the work, the HTTP server must support the request using the correct headers.

Variable scope refers to the regions of code where a variable may be accessed. This is also referred to as visibility. In PHP scope blocks are defined by functions, classes, and a global scope available throughout an application.

Each implementation of Equals must fulfil the following requirements: Reflexive: An object must equal itself.x.Equals(x) returns true. Symmetric: There is no difference if I compare x to y or y to x - the result is the same. x.Equals(y) returns the same value as y.Equals(x). Transit...

Vuex is a state management pattern + library for Vue.js applications. It serves as a centralised store for all the components in an application, with rules ensuring that the state can only be mutated in a predictable fashion. It also integrates with Vue's official dev tools extension to provide adva...

public abstract class SwingWorker<T,V> T - the result type returned by this SwingWorker's doInBackground and get methods. V - the type used for carrying out intermediate results by this SwingWorker's publish and process methods. T doInBackground() - The abstract fu...

This section provides an overview of what jvm is, and why a developer might want to use it. It should also mention any large subjects within jvm, and link out to the related topics. Since the Documentation for jvm is new, you may need to create initial versions of those related topics.

If possible, disable scripts on objects when they are not needed. For example if you have a script on an enemy object that searchers for and fires at the player consider disabling this script when the enemy is too far for example from the player.

ScriptableObjects with AssetBundles Pay attention when adding prefabs to AssetBundles if they contain references to ScriptableObjects. Since ScriptableObjects are essentially assets, Unity creates duplicates of them before adding them to AssetBundles, which may result in undesired behaviour dur...

Oozie is an Apache open source project, originally developed at Yahoo. Oozie is a general purpose scheduling system for multistage Hadoop jobs. Oozie allow to form a logical grouping of relevant Hadoop jobs into an entity called Workflow. The Oozie workflows are DAG (Directed cyclic graph) of a...

This section provides an overview of what image-processing is, and why a developer might want to use it. It should also mention any large subjects within image-processing, and link out to the related topics. Since the Documentation for image-processing is new, you may need to create initial vers...

This section provides an overview of what vb6 is, and why a developer might want to use it. It should also mention any large subjects within vb6, and link out to the related topics. Since the Documentation for vb6 is new, you may need to create initial versions of those related topics.