diff options
author | Richard Moe Gustavsen <richard.gustavsen@digia.com> | 2014-05-14 10:52:37 +0200 |
---|---|---|
committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-05-21 02:15:10 +0200 |
commit | 77982c482323116c59949147291fe4f8ac901f5d (patch) | |
tree | 2219212bb348996bd2f99cb387237e6151c4099f /src/corelib/tools/qscopedvaluerollback.cpp | |
parent | aefa611f0ceac2a945cc7df15683c5072e21153f (diff) |
qscopedvaluerollback: add convenience constructor
It's a common need to assign a variable to something when entering a
code block, and then revert it upon exit. qscopedvaluerollback can
be used for this. But as a convenience, this patch adds an
extra constructor so that you can "protect" and set a variable
in one go instead of using two lines.
Change-Id: If4b89d3a5ba32ef2304bda058b1b6050932612ed
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/tools/qscopedvaluerollback.cpp')
-rw-r--r-- | src/corelib/tools/qscopedvaluerollback.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/corelib/tools/qscopedvaluerollback.cpp b/src/corelib/tools/qscopedvaluerollback.cpp index 3201a3c87a..f37a232985 100644 --- a/src/corelib/tools/qscopedvaluerollback.cpp +++ b/src/corelib/tools/qscopedvaluerollback.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the QtCore module of the Qt Toolkit. @@ -70,6 +70,15 @@ QT_BEGIN_NAMESPACE */ /*! + \fn QScopedValueRollback::QScopedValueRollback(T &var, T value) + + Assigns \a value to \ var and stores the previous value of \a var + internally, for revert on destruction. + + \since 5.4 +*/ + +/*! \fn QScopedValueRollback::~QScopedValueRollback() Assigns the previous value to the managed variable. |