1 | initial version |
To count the number of occurrences in an array using JMESPath, you can use the length()
function. For example, if you have an array of numbers like this:
{
"numbers": [1, 2, 3, 2, 4, 2, 5]
}
You can count how many times the number 2
appears in the array by using the following JMESPath expression:
length(numbers[?@ == 2])
This will return the value 3
, which corresponds to the number of times 2
appears in the numbers
array.
In this expression, numbers[?@ == 2]
is a filter that selects only the elements of the array that match the value 2
. The length()
function then counts the number of items in this filtered array, which gives the number of occurrences of 2
in the original array.