Yaml tips and tricks

tips-and-tricks.yaml

## YAML Anchors and tags
ingress_one:
  annotations: &annotations
    annotation-one: "true"
    annotation-two: "false"
    annotation-three: "false"

ingress_two:
  annotations: *annotations

ingress_three:
  annotations:
    <<: *annotations
    annotation-three: "true"


host: &host www.example.com

tls:
  - host: *host

## Type and explicit type declarations
specific_type: 
  implicit_string: This space for rent
  tagged_string: !!str true
  bool: !!bool true
  int: !!int 123456789
  float_infinity: !!float .inf
  float_positive: !!float 2.3e4
  sequence: !!seq
    - item one
    - true
    - 123456789
  map: !!map
    foo: bar
    bar: foo
    fail: ""
  null_value: !!null null
  
## JSON Equivalence
object1:
  key1: value1
  key2: value2
object2: {"key1": "value1", "key2": "value2"}
object3: {"thing": { "thing2": "other thing"}, "foo": { "is_bar": true}}

array1:
  - thing1
  - thing2
array2: ["thing1", "thing2", true, 0, 0.0]

## Multiline strings
file1.txt: |
  This is an example file.
  It has newlines in it.
  It also ends with an implicit newline.
file2.txt: |-
  This is an example file.
  It has newlines in it.
  It does not end with an implicit newline.
file3.txt: >
  This is an example file.
  Newlines are converted to spaces.
  It ends with an implicit space.
file4.txt: >-
  This is an example file.
  Newlines are converted to spaces.
  It does not have an implicit space at the end.


File1:
This is an example file.
It has newlines in it.
It also ends with an implicit newline.

File2:
This is an example file.
It has newlines in it.
It does not end with an implicit newline.
File3: 
This is an example file. Newlines are converted to spaces. It ends with an implicit space. 
File4: 
This is an example file. Newlines are converted to spaces. It does not have an implicit space at the end.

see_more: https://yaml-multiline.info/

## Selective quoting of keys to increase readability
object:
  "subobject1":
    key: okay
    foo: bar
    one: two
    array:
      - one
      - two
    json: {"foo": "bar"}
  "subobject2":
    key: okay
    foo: bar
    one: two
    array:
      - one
      - two
    json: {"foo": "bar"}
  "subobject3":
    key: okay
    foo: bar
    one: two
    array:
      - one
      - two
    json: {"foo": "bar"}
  "subobject4":
    key: okay
    foo: bar
    one: two
    array:
      - one
      - two
    json: {"foo": "bar"}