As said by others, only one signal handler can be set, which is the last one. You would then have to manage calling two functions yourself. The sigaction function can return the previously installed signal handler which you can call yourself. Something like this (untested code): /* other signal handlers */ static void (*lib1_sighandler)(int) = … Read more
I recommend that you not think of this as “using async within LINQ”. Keep in mind what’s in-between the two: delegates. Several LINQ operators take delegates, and async can be used to create an asynchronous delegate. So, when you have an asynchronous method BazAsync that returns a Task: Task BazAsync(TBar bar); then this code results … Read more
You should be able to mock up the interface and create an instance of the options class for the test. As I am unaware of the nested classes for the options class I am making a broad assumption. Documentation: IOptionsSnapshot //Arrange //Instantiate options and nested classes //making assumptions here about nested types var options = … Read more
There are precedents for using a noun in the Framework, e.g. Enumerable.Average<TSource>(this IEnumerable<TSource> source, Func<TSource, decimal?> selector) Enumerable.Count<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate) Enumerable.GroupBy<TSource, TKey, TElement>(this IEnumerable<TSource> source, Func<TSource, TKey> keySelector, Func<TSource, TElement> elementSelector) ConcurrentDictionary<TKey,TValue>.GetOrAdd(TKey key, Func<TKey, TValue> valueFactory); The noun is often an appropriate verb with an agentive suffix. In your example I would … Read more
In CellContentDoubleClick event fires only when double clicking on cell’s content. I used this and works: private void dgvUserList_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { MessageBox.Show(e.RowIndex.ToString()); }
After some peeking at reflector, the interesting methods here (GetFieldValueAsync<T>, IsDBNullAsync, and the internal method GetBytesAsync) only do “interesting” code for the CommandBehavior.SequentialAccess scenario. So: if you’re not using that: don’t bother – the row data is already buffered in memory, and Task<T> is pure overhead (although it will at least be an already-completed task … Read more
Turns out you can assign an event callback from C# code like this: this.ProgressManager.UpdateNotification = new EventCallback(this, (Action)Refresh); void Refresh() {} It also works with async methods, e.g.: this.ProgressManager.UpdateNotification = new EventCallback(this, (Func<ValueTask>)RefreshAsync); ValueTask RefreshAsync() {} UPDATE You can also use EventCallbackFactory to more conveniently create event callback objects, e.g.: new EventCallbackFactory().Create(this, Refresh)
ios::out opens the file for writing. ios::binary makes sure the data is read or written without translating new line characters to and from \r\n on the fly. In other words, exactly what you give the stream is exactly what’s written.
Casting of infinity to integer is undefined. The behavior is undefined if the truncated value cannot be represented in the destination type. Says it all. Since truncation removes precision but not magnitude, a truncated infinity is still infinity and integers cannot represent infinity.