Which MIME types are related to file extension ".lean"?
The .lean file extension is associated with 3 MIME types:
text/x-lean, text/x-lean3, text/x-lean4.
A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.
About .lean Files
LEAN files are plain text files used for writing code in the Lean theorem prover.
They store formal proofs and functional programming constructs for verifying mathematics and logical statements.
MIME types like text/x-lean, text/x-lean3, and text/x-lean4 signal which Lean version the file uses.
- Formal Verification: Used by mathematicians and computer scientists to design proofs that computers can check.
- Programming: Contains code that expresses logical reasoning, often integrated with functional programming.
- Version Specifics: Distinguishes between Lean 3 and Lean 4, ensuring the correct tools and syntax are applied.
- Editing: Can be edited with popular text editors and IDEs such as Visual Studio Code (with a Lean extension) or Emacs configured for Lean.
Relationship between file extension and MIME type
A file extension is a suffix at the end of a filename that indicates what type of file it is. File extensions help both users and operating systems identify what application should be used to open the file.
File extensions are typically separated from the filename by a period (dot) and consist of 2-4 characters, though they can be longer. For example, in the filename "document.pdf", ".pdf" is the file extension.
File extensions are closely related to MIME types, as they both serve to identify the format of a file. However, while MIME types are used primarily by web browsers and servers, file extensions are used by operating systems and applications.
Associated MIME types
text/x-lean, text/x-lean3, text/x-lean4
FAQ
What is a MIME type?
A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.
MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.
MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.
How do I find the MIME type for a file?
You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.
Why can one extension have multiple MIME types?
Different programs and historical usage may assign various MIME identifiers to the same file format. Listing them together helps maintain compatibility across tools.