advanceDataTypes.yaml

student: !!seq
 - marks
 - name
 - roll_no
 
# like this also
cities: [gujarat, goa]

# some of the keys of the seq will be empty
# sparse seq
sparse seq:
 - hey
 - how
 - 
 - Null
 - sup

# nested sequence
- 
 - mango
 - apple
 - banana
 -
-
 - marks
 - name
 - date
- 

# key: value pairs are called maps
!!map

#nested mappings: map within an map
name: Brijesh Thummar
role:
 age: 18
 job: student

# same as 
name: Brijesh Thummar
role: { age: 18 , job: student }

# pairs: keys may have duplicate values
# !!pairs

pair example: !!pairs
 - job: student
 - job: teacher

# same as
pair example: !!pairs [job: student , job: teacher]
# this will be an array of hashtables

# !!set will allow you to have unique values
names: !!set
 ? Brijesh
 ? Ram
 ? Harsh

# dictionary !!omap
people: !!omap
 - Brijesh:
     name: Brijesh Thummar
     age: 18
     height: 181
 - Ram:
     name: Ram Pandit
     age: 32
     height: 167

# reusing some properties
likings: 
  fav fruit: mango
  dislikes: dragon fruit

person1:
  name: Brijesh Thummar
  fav fruit: mango
  dislikes: dragon fruit

person2:
  name: Rahul
  fav fruit: mango
  dislikes: dragon fruit

person3:
  name: Ram
  fav fruit: mango
  dislikes: dragon fruit
---
# reusing some properties using anchors -> anchors: what and where do you want to copy it.
likings: &likes # give & ---name
  fav fruit: mango
  dislikes: dragon fruit

person1:
  name: Brijesh Thummar
  <<: *likes

person2:
  name: Rahul
  <<: *likes
  dislikes: berries # everything will be copied and dislike will be updated
---
# this will look like
person2:
  name: Ram
  fav fruit: mango
  dislikes: berries
---
person3:
  name: Ram
  fav fruit: mango
  dislikes: dragon fruit