The possibility of using opaque type is totally dependent on the programming language used. Static typing when the majority of type checks are performed at the time of compilation. And also about dynamic typing when these checks are performed at runtime. Instead, with a system of implicit typing, the developer leaves the compiler or runtime to determine its own data types used, for example by inference.

Security typing is designed to prevent type errors, namely the use of a variable whose format is incompatible. The definition of a strongly typed language is rather vague or it is close to that of a statically typed language. The compiler provides earlier detection of type errors or we judge the strength of a language by typing the implicit type conversions authorized.

In the example JavaScript, ambiguity arises from the fact that the same symbol + is used to represent the concatenation of the addition as well as the context requires. File system is the component of the operating system responsible for managing and facilitating the use of peripheral memories, whether secondary or tertiary as shown in Corporate Computer Solutions Sydney.

Its main functions are allocating space for files, free space management, and managing access to protected data. In addition to format information stored in a storage unit (typically a hard disk of a computer), which will then be displayed either textually or graphically using a file manager. Most operating systems manage their own systems.

It is common to use the data storage devices that allow access to the data as a string of blocks of the same size, sometimes called sectors, usually 512 bytes (also called clusters).

The file system software is responsible for organizing these sectors into files and directories, and keeps track of which sectors belong to which file and which have not been used. In practice, a file system can also be used to access dynamic data, such as data received via a network connection (without the intervention of a storage device).

Traditional file systems provide methods to create, move, rename and delete files and directories, but lack of methods to create, for example , additional links to a directory or file (hard link in Unix) or rename parent links as shown by Corporate Computer Solutions Sydney.

Secure access to basic file system can be based on the schemes of access (control list). The access control lists proved unsafe for decades, so experimental operating systems employ access capabilities. Commercial operating systems still work with access control lists.

Normally the files and folders are organized hierarchically. The directory structure is usually hierarchical, branched or tree. In some file systems, file names are structured, with special syntax for filename extensions and version numbers. In others, the file names are simply strings of text and metadata of each file that are housed separately.