From dd95a52513c3e127588be0a077347ad8cd9f9882 Mon Sep 17 00:00:00 2001
From: Jörg Sommrey <28217714+jo-37@users.noreply.github.com>
Date: Sun, 30 Apr 2023 21:20:03 +0200
Subject: Challenge 145 task 1

---
 challenge-145/jo-37/perl/ch-1.pl | 55 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100755 challenge-145/jo-37/perl/ch-1.pl

diff --git a/challenge-145/jo-37/perl/ch-1.pl b/challenge-145/jo-37/perl/ch-1.pl
new file mode 100755
index 0000000000..220093fa67
--- /dev/null
+++ b/challenge-145/jo-37/perl/ch-1.pl
@@ -0,0 +1,55 @@
+#!/usr/bin/perl -s
+
+use v5.24;
+use Test2::V0 '!float';
+use PDL;
+use experimental 'signatures';
+
+our ($tests, $examples);
+
+run_tests() if $tests || $examples;	# does not return
+
+die <<EOS unless @ARGV == 2;
+usage: $0 [-examples] [-tests] [X Y]
+
+-examples
+    run the examples from the challenge
+ 
+-tests
+    run some tests
+
+X Y
+    two vectors in any representation as accepted by the PDL
+    constructor, e.g.  x1,x2,...
+
+EOS
+
+
+### Input and Output
+
+say dot_product(@ARGV);
+
+
+### Implementation
+
+sub dot_product ($x, $y) {
+    (pdl($x) x pdl($y)->dummy(0))->sclr;
+}
+
+
+### Examples and tests
+
+sub run_tests {
+    SKIP: {
+        skip "examples" unless $examples;
+
+        is dot_product([1, 2, 3], [4, 5, 6]), 32, 'example';
+    }
+
+    SKIP: {
+        skip "tests" unless $tests;
+	}
+
+    done_testing;
+    exit;
+}
-- 
cgit