(#19272) Add has_element() function

It is exceptionally difficult to determine if an array contains an element matching a specific value without an iteration or loop construct.

This function is the Puppet equivalent of Array.includes?(foo) in Ruby.  The implementation is a verbatim copy of has_key() with the minor modifications needed to support arrays instead of hashes.

1 files changed, 9 insertions, 0 deletions

diff --git a/tests/has_element.pp b/tests/has_element.pp
new file mode 100644
index 0000000..ec06aac
--- /dev/null
+++ b/tests/has_element.pp
@@ -0,0 +1,9 @@
+include stdlib
+
+$my_array = ['key_one']
+if has_element($my_array, 'key_two') {
+  notice('we will not reach here')
+}
+if has_element($my_array, 'key_one') {
+  notice('this will be printed')
+}