visitFile

visitFile is a function commonly found in programming libraries and frameworks, particularly those dealing with file system operations or tree traversal. Its primary purpose is to provide a structured way to process individual files within a directory or a more complex file system structure.

The core concept behind visitFile is to execute a specific action for each file encountered during a traversal. This action is typically defined by a callback function provided by the user. When the visitFile function encounters a file, it invokes this callback function, passing relevant information about the file as arguments. This information usually includes the file's path, its name, and potentially other metadata such as its size, modification date, or permissions.

Libraries that implement visitFile often use it in conjunction with a directory traversal mechanism. For example, a function might recursively scan through directories and subdirectories, and whenever it finds a file, it calls visitFile to apply the user-defined processing logic. This allows for batch operations like searching for specific file types, calculating total file sizes, or applying transformations to multiple files. The flexibility of the callback function makes visitFile a versatile tool for a wide range of file system management tasks.