class MyClass { String? instanceVar; static String? staticVar; void checkInstanceVar() { if (instanceVar == null) { print('Instance variable is not initialized.'); } else { print('Instance variable is initialized to: $instanceVar'); } } static void checkStaticVar() { if (staticVar ...
employees variable is declared, but not initialized. Another example is, the map is declared with empty values literal syntax. Map<int, String>? employees={}; #How to check if the given map is null or empty In this below, the map is declared and not assigned with value, So Map alway...
线程锁使用 C++ 11 提供的 std::condition_variable cv_，配合 std::mutex mutex_ 一起使用。Thread Local 存储对应线程的 Message Loop，这样在同一个线程的不同函数中都能拿到 Message Loop。/path/to/flutter/engine/src/flutter/fml/message_loop.cc FML_THREAD_LOCAL ThreadLocalUniquePtr<MessageLoop> tls_...
so.1(pthread_cond_timedwait+188)(52b2e6ee8840614f4d0c73ac6831f6fd) #02pc 0000000002084ce0/data/storage/el1/bundle/libs/arm64/libflutter.so(19a6e9edf855e6f34e4d8d6b11a2bba1483ae0b3) #03pc 00000000020849f0/data/storage/el1/bundle/libs/arm64/libflutter.so(std::_fl::condition_variable:...
Ensure that the message loop is // initialized. fml::MessageLoop::EnsureInitializedForCurrentThread(); _threadHost = {threadLabel.UTF8String, // label flutter::ThreadHost::Type::UI | flutter::ThreadHost::Type::GPU | flutter::ThreadHost::Type::IO}; ... return _shell != nullptr; } ...
dev/guides/language/effective-dart/usage#avoid-late-variables-if-you-need-to-check-whether-they-...
线程锁使用 C++ 11 提供的 std::condition_variable cv_,配合 std::mutex mutex_ 一起使用。 Thread Local 存储对应线程的 Message Loop,这样在同一个线程的不同函数中都能拿到 Message Loop。 /path/to/flutter/engine/src/flutter/fml/message_loop.cc ...
Variables are updated automatically when server values are received. If you want to receive feedback when a specific variable is updated, use the individual callback: CleverTapPlugin.onValueChanged('flutter_var_string', (variable) {print("onValueChanged: "+variable.toString()); }); ...
When condition is too long in action editor, it cuts off and becomes hard to see #5003 opened Nov 29, 2024 list variable can't be accessed in conditional to see if list is empty in a component? maybe? #5002 opened Nov 29, 2024 Custom fonts do not get imported when using proje...
SKIP_ANDROIDorSKIP_IOSenvironment variable helps to skip these checks. # skip Android check SKIP_ANDROID=1 appium driver doctor flutter # skip iOS check SKIP_IOS=1 appium driver doctor flutter Note Flutter context does not support page source ...