Reusing thread in loop c++

The easiest way is to use a waitable queue of std::function objects. Like this: #include <iostream> #include <thread> #include <mutex> #include <condition_variable> #include <queue> #include <functional> #include <chrono> class ThreadPool { public: ThreadPool (int threads) : shutdown_ (false) { // Create the specified number of threads threads_.reserve (threads); for (int i = 0; i < … Read more

How to use ui:include with parameters?

You need to nest <ui:param> inside <ui:include> to pass parameters to the included file. <ui:include src=”https://stackoverflow.com/questions/5291181/general.xhtml”> <ui:param name=”action” value=”actionOne” /> </ui:include> and in the include: <h:commandButton action=”#{action}” /> Note that this only supports strings, not action methods. For the latter you would need to upgrade to JSF 2.0 and use composite components.

Reuse of a LINQ query

You can store it in a variable. If you are working with IQueryable then use: System.Linq.Expressions.Expression<Func<Foo, bool>> selector = x => x.Contains(“”); If you are using IEnumerable then use: Func<Foo, bool> selector = x => x.Contains(“”); And use it in your query: query.Where(selector);

WCF Service Reference generates its own contract interface, won’t reuse mine

“Reuse types in referenced assemblies” only allows you to reuse Data Contracts, not Service Contracts. If you want to share Service Contracts, you don’t need to use “Add Service Reference” at all. You can just use ChannelFactory directly. // Supply the binding and address in code Binding binding = new BasicHttpBinding(); EndpointAddress address = new … Read more

Why can a string be assigned to a char* pointer, but not to a char[] array?

Why it works with pointers: When you say char * str1 in C, you are allocating a pointer in the memory. When you write str1 = “Hello”;, you are creating a string literal in memory and making the pointer point to it. When you create another string literal “new string” and assign it to str1, … Read more

Is there any way to reuse a Stream? [duplicate]

If you want to have the effect of reusing a stream, you might wrap the stream expression in a Supplier and call myStreamSupplier.get() whenever you want a fresh one. For example: Supplier<Stream<String>> sup = () -> someList.stream(); List<String> nonEmptyStrings = sup.get().filter(s -> !s.isEmpty()).collect(Collectors.toList()); Set<String> uniqueStrings = sup.get().collect(Collectors.toSet());

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)