From 6548b89cc4eb214cb4632fd4332c610f2d1f0a9d Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 8 Jan 2021 12:22:21 +0100
Subject: string2Int(): Return std::optional

---
 src/libutil/args.hh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/libutil/args.hh')

diff --git a/src/libutil/args.hh b/src/libutil/args.hh
index 62b9516d8..823d843aa 100644
--- a/src/libutil/args.hh
+++ b/src/libutil/args.hh
@@ -87,7 +87,9 @@ protected:
         template<class I>
         Handler(I * dest)
             : fun([=](std::vector<std::string> ss) {
-                if (!string2Int(ss[0], *dest))
+                if (auto n = string2Int<I>(ss[0]))
+                    *dest = *n;
+                else
                     throw UsageError("'%s' is not an integer", ss[0]);
               })
             , arity(1)
-- 
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