This commit is contained in:
Christoph Stäbler
2022-05-24 18:18:27 +10:00
committed by GitHub
parent 451d8643ee
commit dee592eb3b
18 changed files with 27 additions and 27 deletions
+2 -2
View File
@@ -47,7 +47,7 @@ b: dog
## Complex assignment, operator precedence rules
Just like math expression - `yq` expression have an order of precedence. The pipe `|` operator has a low order of precedence, so operators with higher precedence will get evalated first.
Just like math expression - `yq` expression have an order of precedence. The pipe `|` operator has a low order of precedence, so operators with higher precedence will get evaluated first.
Most of the time, this is intuitively what you'd want, for instance `.a = "cat" | .b = "dog"` is effectively: `(.a = "cat") | (.b = "dog")`.
@@ -66,7 +66,7 @@ Lets say you had:
Lets say you wanted to update the `sally` entry to have fruit: 'mango'. The _incorrect_ way to do that is:
`.[] | select(.name == "sally") | .fruit = "mango"`.
Becasue `|` has a low operator precedence, this will be evaluated (_incorrectly_) as : `(.[]) | (select(.name == "sally")) | (.fruit = "mango")`. What you'll see is only the updated segment returned:
Because `|` has a low operator precedence, this will be evaluated (_incorrectly_) as : `(.[]) | (select(.name == "sally")) | (.fruit = "mango")`. What you'll see is only the updated segment returned:
```yaml
name: sally