Language

Overview ¶

Templating language used in ytt is a slightly modified version of Starlark. Following modifications were made:

• requires end keyword for block closing
  • hence no longer whitespace sensitive (except new line breaks)
• does not allow use of pass keyword

See full Starlark specification for detailed reference.

Types ¶

• NoneType: None (equivalent to null in other languages)
• Bool: True or False
• Integer: 1
• Float: 1.1
• String: "string"
• List: [1, 2, {"a":3}]
• Tuple: (1, 2, "a")
• Dictionary: {"a": 1, "b": "b"}
• Struct: struct.make(field1=123, field2="val2")
• YAML fragment
• Annotation: @name arg1,arg2,keyword_arg3=123

Control flow ¶

• If conditional
• For loop
• Function