local-variables

So starting in Java 9, we can use var to declare local variables: var s = "cool"; is there a way to use a similar construct when declaring fields? class Container { final var s = "cool"; // does not compile tmk } doesn't seem like it from what I can tell. Jacob G. is there a way to use a similar construct when declaring fields? No. According to JEP 286: Local-Variable Type Inference : This treatment would be restricted to local variables with initializers, indexes in the enhanced for-loop, and locals declared in a traditional for-loop; it would not be available for method formals, constructor

When getting a stacktrace as error report from an application that is already deployed, it would be helpful to also get the actual variable values to reconstruct the system's state at the point before the exception was thrown. Is anything like that feasible in Java and how could one do that? Cheers, Max I'm pretty sure you cannot get the local variables in the stacktrace as the output is built from instance of StackTraceElement which only contains, the class, the file, the method and the line number (see http://download.oracle.com/javase/6/docs/api/java/lang/StackTraceElement.html ). Have a

Variables of built-in types can be value-initialized like this : int var = int(); this way I get the default value of int without hardcoding the zero in my code. However if I try to do similar stuff for a pointer: int* ptr = int*(); the compiler (Visual C++ 10) refuses to compile that (says type int unexpected ). How do I value-initialize a pointer in similar manner? How do I value-initialize a Type* pointer using Type()-like syntax? You cannot. The syntax T() is defined in 5.2.3/1,2 (C++03, slightly different wording in C++11 FDIS). In particular the second paragraph states: The expression T(

def method a = 3 b = 4 some_method_that_gives # [a, b] end Nakilon local_variables It outputs array of symbols, presenting variables. In your case: [:a, :b] local_variables lists local variables but it lists them before they are defined. See this: p local_variables a = 1 p local_variables this outputs [:a] [:a] which may not be what you expect. Contrast with defined? p defined? a a = 1 p defined? a which outputs the more anticipated nil "local-variable" 来源： https://stackoverflow.com/questions/4487326/how-to-list-local-variables-in-ruby

I am trying to have a function grab an object from a php file on another page. I'm using the jQuery ajax function to to do the json grab, which is working correctly. The issue is when I try to return that object from the function. The first time I log the object (from within the success function) it is correct in the console, but the returned object from the function getGantt() logs as "undefined". How do I get this object out of the function? My code: function getGantt(requestNumber){ var ganttObject; $.ajax({ type: "POST", url: "get_gantt.php", data: {request_number: requestNumber}, success: