Tutorial by Topics

Annotation processor is a tool build in javac for scanning and processing annotations at compile time. Annotations are a class of metadata that can be associated with classes, methods, fields, and even other annotations.There are two ways to access these annotations at runtime via reflection and at...

Change root (chroot) is an operation that changes the apparent root directory for the current running process and their children. A program that is run in such a modified environment cannot access files and commands outside that environmental directory tree. chroot [destination path] [shell or...

An R Notebook is an R Markdown document with chunks that can be executed independently and interactively, with output visible immediately beneath the input. They are similar to R Markdown documents with the exception of results being displayed in the R Notebook creation/edit mode rather than in the ...

Installing or Updating your Software will give access to new features and bug fixes. Updating your R installation can be done in a couple of ways. One Simple way is go to R website and download the latest version for your system.

Sometimes you may need to use pip package manager inside python eg. when some imports may raise ImportError and you want to handle the exception. If you unpack on Windows Python_root/Scripts/pip.exeinside is stored __main__.py file, where main class from pip package is imported. This means pip packa...

External Term Format is a binary format used to communicate to outside world. You can use it with any language through ports, drivers or NIF. BERT (Binary ERlang Term) can be used in other languages.

When you create searches with Suitescript, you could provide as "filters" either array of Filter objects, or filter expression. The second option is more readable and gives you very flexible option to provide nested expressions (up to 3 levels) using not only the default "AND", b...

Connecting your WatchOS application to your iOS application can be a task to complete when you have never done it before. This tutorial will show you the basic fundamentals in order to accomplish this very important task.

NLP is a way for computers to analyze, understand, and derive meaning from human language in a smart and useful way. By utilizing NLP, developers can organize and structure knowledge to perform tasks such as automatic summarization, translation, named entity recognition, relationship extraction, sen...

There are two methods to get messages and informations from your bot: The /getUpdates function wich is documented pretty straight forward in the spectific section of the documentation Next: The webhook function which is a bit more complex and often causes issues. The difference basically is that ...

Bash is often commonly used in the management and maintenance of servers and clusters. Information pertaining to typical commands used by network operations, when to use which command for which purpose, and examples/samples of unique and/or interesting applications of it should be included

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

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

A code block is a piece of Python program text that can be executed as a unit, such as a module, a class definition or a function body. Some code blocks (like modules) are normally executed only once, others (like function bodies) may be executed many times. Code blocks may textually contain other c...

This documentation focuses on explaining the uses and of the require() statement that NodeJS includes in their language. Require is an import of certain files or packages used with NodeJS's modules. It is used to improve code structure and uses. require() is used on files that are installed locally...

NUI : A natural user interface (NUI) is a system for human-computer interaction that the user operates through intuitive actions related to natural, everyday human behavior. Kivy is a Python library for development of multi-touch enabled media rich applications which can be installed on different d...

Slaesforce StandardSetController hold only List of sObject, It will not holdslist of wrapper class object. Below source code demonstrates the usage of Paginating using Wrapper Class in sales-force.

"aggregations" : { -"<aggregation_name>" : { -"<aggregation_type>" : { -<aggregation_body> -} -[,"meta" : { [<meta_data_body>] } ]? -[,"aggregations" : { [<sub_aggregation>]+ } ]? -} -[,"<aggregation_...

This topic will focus on the things that one should (not mandatory) do in a batch file. Using these "best practices" can enhance the effect and the function of a batch file.