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Document the preference of nullptr over NULL or (void*)0

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This commit is contained in:
practicalswift 2017-08-16 17:26:07 +02:00
parent dbf6bd6ea0
commit bea8e9e66e
4 changed files with 8 additions and 7 deletions
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3
doc/developer-notes.md
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@ -37,6 +37,7 @@ code.
- **Miscellaneous** - **Miscellaneous**
- `++i` is preferred over `i++`. - `++i` is preferred over `i++`.
- `nullptr` is preferred over `NULL` or `(void*)0`.
- `static_assert` is preferred over `assert` where possible. Generally; compile-time checking is preferred over run-time checking. - `static_assert` is preferred over `assert` where possible. Generally; compile-time checking is preferred over run-time checking.
Block style example: Block style example:
@ -276,7 +277,7 @@ Wallet
- *Rationale*: In RPC code that conditionally uses the wallet (such as - *Rationale*: In RPC code that conditionally uses the wallet (such as
`validateaddress`) it is easy to forget that global pointer `pwalletMain` `validateaddress`) it is easy to forget that global pointer `pwalletMain`
can be NULL. See `test/functional/disablewallet.py` for functional tests can be nullptr. See `test/functional/disablewallet.py` for functional tests
exercising the API with `-disablewallet` exercising the API with `-disablewallet`
- Include `db_cxx.h` (BerkeleyDB header) only when `ENABLE_WALLET` is set - Include `db_cxx.h` (BerkeleyDB header) only when `ENABLE_WALLET` is set

8
src/qt/macdockiconhandler.mm
View file

@ -18,7 +18,7 @@
extern void qt_mac_set_dock_menu(QMenu *); extern void qt_mac_set_dock_menu(QMenu *);
#endif #endif
static MacDockIconHandler *s_instance = NULL; static MacDockIconHandler *s_instance = nullptr;
bool dockClickHandler(id self,SEL _cmd,...) { bool dockClickHandler(id self,SEL _cmd,...) {
Q_UNUSED(self) Q_UNUSED(self)
@ -34,7 +34,7 @@ void setupDockClickHandler() {
Class cls = objc_getClass("NSApplication"); Class cls = objc_getClass("NSApplication");
id appInst = objc_msgSend((id)cls, sel_registerName("sharedApplication")); id appInst = objc_msgSend((id)cls, sel_registerName("sharedApplication"));
if (appInst != NULL) { if (appInst != nullptr) {
id delegate = objc_msgSend(appInst, sel_registerName("delegate")); id delegate = objc_msgSend(appInst, sel_registerName("delegate"));
Class delClass = (Class)objc_msgSend(delegate, sel_registerName("class")); Class delClass = (Class)objc_msgSend(delegate, sel_registerName("class"));
SEL shouldHandle = sel_registerName("applicationShouldHandleReopen:hasVisibleWindows:"); SEL shouldHandle = sel_registerName("applicationShouldHandleReopen:hasVisibleWindows:");
@ -53,7 +53,7 @@ MacDockIconHandler::MacDockIconHandler() : QObject()
setupDockClickHandler(); setupDockClickHandler();
this->m_dummyWidget = new QWidget(); this->m_dummyWidget = new QWidget();
this->m_dockMenu = new QMenu(this->m_dummyWidget); this->m_dockMenu = new QMenu(this->m_dummyWidget);
this->setMainWindow(NULL); this->setMainWindow(nullptr);
#if QT_VERSION < 0x050000 #if QT_VERSION < 0x050000
qt_mac_set_dock_menu(this->m_dockMenu); qt_mac_set_dock_menu(this->m_dockMenu);
#elif QT_VERSION >= 0x050200 #elif QT_VERSION >= 0x050200
@ -69,7 +69,7 @@ void MacDockIconHandler::setMainWindow(QMainWindow *window) {
MacDockIconHandler::~MacDockIconHandler() MacDockIconHandler::~MacDockIconHandler()
{ {
delete this->m_dummyWidget; delete this->m_dummyWidget;
this->setMainWindow(NULL); this->setMainWindow(nullptr);
} }
QMenu *MacDockIconHandler::dockMenu() QMenu *MacDockIconHandler::dockMenu()

2
src/qt/macnotificationhandler.mm
View file

@ -75,7 +75,7 @@ bool MacNotificationHandler::hasUserNotificationCenterSupport(void)
MacNotificationHandler *MacNotificationHandler::instance() MacNotificationHandler *MacNotificationHandler::instance()
{ {
static MacNotificationHandler *s_instance = NULL; static MacNotificationHandler *s_instance = nullptr;
if (!s_instance) { if (!s_instance) {
s_instance = new MacNotificationHandler(); s_instance = new MacNotificationHandler();

2
src/random.cpp
View file

@ -242,7 +242,7 @@ void GetOSRand(unsigned char *ent32)
} }
#elif defined(HAVE_GETENTROPY_RAND) && defined(MAC_OSX) #elif defined(HAVE_GETENTROPY_RAND) && defined(MAC_OSX)
// We need a fallback for OSX < 10.12 // We need a fallback for OSX < 10.12
if (&getentropy != NULL) { if (&getentropy != nullptr) {
if (getentropy(ent32, NUM_OS_RANDOM_BYTES) != 0) { if (getentropy(ent32, NUM_OS_RANDOM_BYTES) != 0) {
RandFailure(); RandFailure();
} }