yq/pkg/yqlib/doc/operators/kind.md

Get kind

Given a sample.yml file of:

a: cat
b: 5
c: 3.2
e: true
f: []
g: {}
h: null

then

yq '.. | kind' sample.yml

will output

map
scalar
scalar
scalar
scalar
seq
map
scalar

Get kind, ignores custom tags

Unlike tag, kind is not affected by custom tags.

Given a sample.yml file of:

a: !!thing cat
b: !!foo {}
c: !!bar []

then

yq '.. | kind' sample.yml

will output

map
scalar
map
seq

Add comments only to scalars

An example of how you can use kind

Given a sample.yml file of:

a:
  b: 5
  c: 3.2
e: true
f: []
g: {}
h: null

then

yq '(.. | select(kind == "scalar")) line_comment = "this is a scalar"' sample.yml

will output

a:
  b: 5 # this is a scalar
  c: 3.2 # this is a scalar
e: true # this is a scalar
f: []
g: {}
h: null # this is a scalar