From 7d37d296f942ac993d041b4576ed52265170c4a8 Mon Sep 17 00:00:00 2001 From: Alexey Rusakov Date: Sun, 2 Jan 2022 06:03:26 +0100 Subject: Add ImplPtr and makeImpl The original (more complex and comprehensive) solution belongs to https://oliora.github.io/2015/12/29/pimpl-and-rule-of-zero.html - this commit only provides a small wrapper for non-copyable Private class implementations common throughout libQuotient. Unlike the original, default initialisation is made explicit - you have to pass ZeroImpl() instead (and I firmly believe it's a good thing: normally pointers to Private should not remain nullptr). The reason ZeroImpl<> is not a template variable is quite simple: unique_ptr is non-copyable and so cannot be initialised from; while a template function will initialise the value in-place thanks to copy elision. --- lib/connectiondata.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'lib/connectiondata.h') diff --git a/lib/connectiondata.h b/lib/connectiondata.h index e16a2dac..75fc332f 100644 --- a/lib/connectiondata.h +++ b/lib/connectiondata.h @@ -4,9 +4,10 @@ #pragma once +#include "util.h" + #include -#include #include class QNetworkAccessManager; @@ -42,6 +43,6 @@ public: private: class Private; - std::unique_ptr d; + ImplPtr d; }; } // namespace Quotient -- cgit v1.2.3