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Subjects

JAVASCRIPTHTMLCSSPYTHONSQLJAVACPPCSHARPPHPTYPESCRIPTCRUBYGOSWIFTKOTLINRUSTRBASHSCALAOBJECTIVE-CDARTPERLLUAMATLABXMLJSONMARKDOWNASSEMBLYLATEXYAMLSOLIDITYBLOCKCHAIN

Topics

Introduction to YAML

What is YAMLYAML vs. JSON and XMLYAML Use CasesYAML File Extension

YAML Syntax Basics

YAML IndentationYAML CommentsYAML Key-Value PairsYAML StringsYAML NumbersYAML BooleansYAML Null Values

YAML Data Structures

YAML ListsYAML Nested ListsYAML DictionariesYAML Nested DictionariesYAML Complex Structures

YAML Advanced Features

YAML AnchorsYAML AliasesYAML Merge KeysYAML Block ScalarsYAML Folded ScalarsYAML Literal ScalarsYAML Multi-line Strings

YAML Data Types

YAML TimestampsYAML Binary DataYAML SetsYAML PairsYAML Omap

YAML Document Structure

YAML Multiple DocumentsYAML Document SeparatorsYAML DirectivesYAML Tags

YAML Best Practices

YAML Naming ConventionsYAML Formatting GuidelinesYAML Error HandlingYAML Version Compatibility

Working with YAML

YAML ParsingYAML GenerationYAML ValidationYAML in PythonYAML in RubyYAML in JavaScript

YAML in Configuration

YAML for App ConfigYAML in DockerYAML in KubernetesYAML in Ansible

YAML Security

YAML InjectionYAML Safe LoadingYAML Encryption

YAML Tools and Editors

YAML Online ValidatorsYAML IDE PluginsYAML Command-line Tools

YAML File Extension

YAML files are commonly identified by their unique file extensions. These extensions play a crucial role in distinguishing YAML documents from other file types and ensuring proper processing by YAML-aware applications.

Common YAML File Extensions

YAML files typically use one of the following extensions:

  • .yaml: The most widely recognized and preferred extension for YAML files.
  • .yml: A shorter alternative, often used in systems with character limitations.

Both extensions are interchangeable and equally valid for YAML documents. The choice between them is often a matter of personal preference or project conventions.

Purpose of YAML File Extensions

File extensions serve several important purposes in the context of YAML:

  1. Identification: They help users and systems quickly identify YAML files.
  2. Association: Operating systems use extensions to associate files with appropriate applications.
  3. Parsing: YAML parsers rely on these extensions to recognize and process YAML content correctly.

Using YAML File Extensions

When creating a YAML file, simply append the chosen extension to your filename. For example:

config.yaml
data.yml

Most text editors and IDEs will automatically recognize these extensions and provide syntax highlighting and other YAML-specific features.

YAML File Extension in Different Contexts

Various tools and platforms may have preferences for specific YAML file extensions:

  • Docker commonly uses .yml for compose files.
  • Kubernetes accepts both .yaml and .yml for manifests.
  • Ansible playbooks often use .yml.

It's important to consult the documentation of the specific tool or platform you're working with to ensure compatibility.

Best Practices

  • Be consistent with your choice of extension within a project.
  • Follow any established conventions in your development ecosystem.
  • Use descriptive filenames along with the appropriate extension.
  • Ensure your YAML formatting is correct, regardless of the extension used.

Conclusion

Understanding and properly using YAML file extensions is fundamental to working with YAML documents effectively. Whether you choose .yaml or .yml, ensuring consistency and following best practices will contribute to a smoother development process and better integration with YAML-aware tools and systems.