global

问题 I am using the code from this article : private const int WH_KEYBOARD_LL = 13; private const int WM_KEYDOWN = 0x0100; private static LowLevelKeyboardProc _proc = HookCallback; private static IntPtr _hookID = IntPtr.Zero; public static void Main() { _hookID = SetHook(_proc); //Application.Run(); //UnhookWindowsHookEx(_hookID); } private static IntPtr SetHook(LowLevelKeyboardProc proc) { using (Process curProcess = Process.GetCurrentProcess()) using (ProcessModule curModule = curProcess

问题 I'm having trouble modifying global variables between different files in Python. For example: File1.py: x = 5 File2.py: from File1 import * def updateX(): global x x += 1 main.py: from File2 import * updateX() print x #prints 5 回答1: There are several important things to note here. First, global isn't global. The really global things, like built-in functions, are stored in the __builtin__ module, or builtins in Python 3. global means module-level. Second, when you import * , you get new

问题 I suppose this is a specific question, but for some reason, when I create a Thread like this: require_once(__DIR__.'/myotherfile.php'); class StreamBufferInput extends Thread { public function run(){ global $max_buffer_size; global $data_source; echo "DATA:" . $max_buffer_size; ... } } myotherfile.php has those two variables declared in it (and they can be accessed from other classes, but my echo statement here prints DATA: and nothing else. I couldn't find much on doing global variables

问题 The documentation for rpy2 states that the robjects.r object gives access to an R global environment. Is there a way to "refresh" this global environment to its initial state? I would like to be able to restore the global environment to the state it was in when the rpy2.robjects module was imported but not yet used. In this manner, I don't have to worry about memory leaks on long running jobs or other unexpected side effects. Yes, refreshing the environment could introduce a different

问题 I'm new to programming, and I'm looking for some advice on what to do. The program I'm trying to write will need several numbers from the user. I want to use a function to test if the user input a number or not for each of the values entered. If the input isn't a number, I want the function to keep asking for a number until one is entered. I want to know if there is a better way to pass the value into a global variable other than explicitly declaring each variable in the function as global. I

问题 I know this question has been asked a million times because I have done some research and have found many threads on this. I have tried to use the answers in those threads but I am having a bit of trouble. I am looking to set a few variables that I can use across all of my activities. I created a GlobalVariables.java class which looks like the following (the value in there is just for testing purposes as of now): import android.app.Application; public class GlobalVariables extends Application

问题 I'm using Twilio.js library on my application (not Twilio Node) and there's no module nor typings for this library available. There's only a Twilio global variable available that one can use. The simplest ambient declaration one can have to avoid errors in the IDE is this: declare const Twilio: any; But I want to go a little bit further and for that I've been reading TypeScript handbook and few other resources. I've taken especially attention to this link. And here's what I have so far:

问题 I have a global variable: var x = document.getElementById("Node").value; Where the value is determined by a text box with the ID of "Node". I have two functions that don't same thing if creating preset notes based on values entered into text and drop downs. How do I call the above global variable into those functions and have it added to the created statement. Both functions look the same: This works for one function but not when there is two. What I have is several text boxes and drop downs.

问题 My aim is to retrieve some data from a global array which is defined in another PHP file. My code is running inside "database.php" file and the array I want to use is inside "config.php" file. My code is as below: config.php $CONFIG = array(); // ... $CONFIG["DATABASE"] = array(); $CONFIG["DATABASE"]["USERNAME"] = "user"; $CONFIG["DATABASE"]["PASSWORD"] = "pass"; $CONFIG["DATABASE"]["HOSTNAME"] = "127.0.0.1"; $CONFIG["DATABASE"]["DATABASE"] = "my_db"; // ... database.php require('config.php')

问题 Is there a way to declare a variable so it is available in all functions. Basically I want to call: Global $varName; automatically for every function. And no, I can't use a constant. I don't think its possible but wanted to ask anyway. Thanks! :D 回答1: That's pretty oldschool and not recommended. If you want to use variables whereever you want consider using sessions of passing through variables if you're on an object oriented tour ;) 回答2: There is a $GLOBALS variable and a globals keyword