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TOML
Configuration file format From Wikipedia, the free encyclopedia
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Tom's Obvious, Minimal Language (TOML, originally Tom's Own Markup Language[2]) is a file format for configuration files.[3] It is intended to be easy to read and write due to obvious semantics which aim to be "minimal", and it is designed to map unambiguously to a dictionary. Originally created by Tom Preston-Werner, its specification is open source. TOML is used in a number of software projects[4][5][6] and is implemented in many programming languages.[7]
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Syntax
TOML's syntax primarily consists of key = value pairs, [section names], and # (for comments). TOML's syntax somewhat resembles that of .INI files, but it includes a formal specification, whereas the INI file format suffers from many competing variants.
Its specification includes a list of supported data types: string, integer, float, boolean, datetime, array, and table.
Example
# This is a TOML document.
title = "ImpalaPay Co."
[database]
server = "192.168.1.1"
ports = [ 8000, 8001, 8002 ]
connection_max = 5000
enabled = true
# Line breaks are okay when inside arrays
hosts = [
"alpha",
"omega"
]
[servers]
# Indentation (tabs and/or spaces) is allowed, but not required
[servers.alpha]
ip = "10.0.0.1"
dc = "eqdc10"
[servers.beta]
ip = "10.0.0.2"
dc = "eqdc10"
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Use cases
TOML is used in a variety of settings (some related to its creator), such as:
Criticism
TOML has been criticized on a number of points:[12][13]
- TOML is verbose; it is not DRY and is syntactically noisy.
- TOML's hierarchies can be difficult to infer from syntax alone.
- Overcomplication: TOML has too many features.
- In TOML, the syntax determines the data types ("syntax typing").
See also
References
External links
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