From 3cbf8a388719f2e279c1903642ae7304d27a013f Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Fri, 1 Apr 2022 00:20:39 -0700
Subject: loop: new if combinator.

---
 testcases-iter | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

(limited to 'testcases-iter')

diff --git a/testcases-iter b/testcases-iter
index 629420e..223ca4c 100644
--- a/testcases-iter
+++ b/testcases-iter
@@ -368,3 +368,40 @@ BEGIN {
 ("a" nil)
 (nil "a")
 ("a" "b" "c")
+--
+17:
+$cppawk '
+#include <iter.h>
+
+BEGIN {
+  loop (range (i, 1, 10),
+        if (i % 2 == 0, collect(l, i)))
+  { }
+
+  print sexp(l)
+}'
+:
+(2 4 6 8 10)
+--
+18:
+$cppawk '
+#include <iter.h>
+
+BEGIN {
+  loop (range (i, 1, 10),
+        if (i % 2 == 1, from(j, 1)))
+  {
+    print i, j
+  }
+}'
+:
+1 1
+2 1
+3 2
+4 2
+5 3
+6 3
+7 4
+8 4
+9 5
+10 5
-- 
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