Merge branch 'rightlib' into mergelibs-241120-1113

1 files changed, 29 insertions, 0 deletions

diff --git a/yql/essentials/tests/s-expressions/suites/Builtins/Fold2Lambda.yql b/yql/essentials/tests/s-expressions/suites/Builtins/Fold2Lambda.yql
new file mode 100644
index 0000000000..9d15c7ceb8
--- /dev/null
+++ b/yql/essentials/tests/s-expressions/suites/Builtins/Fold2Lambda.yql
@@ -0,0 +1,29 @@
+(
+#comment
+(let mr_source (DataSource 'yt 'plato))
+(let x (Read! world mr_source (Key '('table (String 'Input))) '('key 'subkey 'value) '()))
+(let world (Left! x))
+(let table1 (Right! x))
+(let table1map (Map table1 (lambda '(item) (block '(
+   (let value (Member item 'value))
+   (let newValue (AsList value))
+   (let newValue (Prepend (String 'prepended) newValue))
+   (let newValue (Append newValue (String 'appended)))
+   (let myLambda (lambda '(item state) (+ state item)))
+   (let state (Uint32 '0))
+   (let state (Fold (Map newValue (lambda '(x) (Size x))) state myLambda))
+   (let ilist (AsList (Int32 '4)))
+   (let ilist (Append ilist (Int32 '6)))
+   (let state2 (Int32 '0))
+   (let state2 (Fold ilist state2 myLambda))
+   (let s (Struct))
+   (let s (AddMember s 'key (Member item 'key)))
+   (let s (AddMember s 'subkey (String  '.)))
+   (let s (AddMember s 'value (Concat (Concat value (String '" ==> ")) (Concat (ToString state) (ToString state2)))))
+   (return s)
+)))))
+(let mr_sink (DataSink 'yt (quote plato)))
+(let world (Write! world mr_sink (Key '('table (String 'Output))) table1map '('('mode 'append))))
+(let world (Commit! world mr_sink))
+(return world)
+)