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fa6fac1a76
* Remove extra backtick * Reword explanation of update * Reword explanation of relative update * Change "remaple" to "remain" * Change "clovver" to "clobber" * Reword explanation of update for comment operators * Reword explanation of relative update for comment operators * Change "array" to "expression" * Change "the golangs" to "Golang's" * Change "golangs" to "Golang's" * Change "can durations" to "can add durations" * Change "array scalars" to "arrays" * Change "beit" to "be it" * Fix typo in `eval` tip * Fix typo in header for `has` operation * Add space before pipe in `line` operator example * Fix typos in explanation of deep array merges * Change "is now used" to "is now used." * Change "object," to "object." * Changes "indexes" to "indices" * Remove extraneous copied text from `..` article * Reword explanation of `...` operator * Change "your are" to "you are" * Add link to `string` operator docs in `select` article * Change "is a" to "parameter specifies" in `string` operators article * Change "new line" to "newline" * Change "golang regex" to "Golang's regex" * Change "golang" to "Golang" * Add period * Remove comma in `subtract` article * Remove duplicate number subtraction example * Remove comma in `traverse` operator article * Clarify use of brackets when `read`ing with special characters
777 B
777 B
Has
This operation returns true if the key exists in a map (or index in an array), false otherwise.
Has map key
Given a sample.yml file of:
- a: yes
- a: ~
- a:
- b: nope
then
yq '.[] | has("a")' sample.yml
will output
true
true
true
false
Select, checking for existence of deep paths
Simply pipe in parent expressions into has
Given a sample.yml file of:
- a:
b:
c: cat
- a:
b:
d: dog
then
yq '.[] | select(.a.b | has("c"))' sample.yml
will output
a:
b:
c: cat
Has array index
Given a sample.yml file of:
- []
- [1]
- [1, 2]
- [1, null]
- [1, 2, 3]
then
yq '.[] | has(1)' sample.yml
will output
false
false
true
true
true