global

问题 I have a problem. I have defined some global variables and namespaced it into an object called "app". Example: window.app : { foo : null, bar : null, } Well, the idea is that I want to be able to modify those variables from any module by calling app.foo = "baz" or app.bar = "baz", but I don't want the user to be able to modify those variables from the browser console (element inspector). Is it possible? PD: Well, I have a Backbone.js collection which is sinchronized with the server. I don't

问题 Here is the window : so now, when I scroll down (the children appear in the same fashion as displayed above, all way long), I see what I want: but I just fail to access it. Why? Here the code, in a function that lies in a js folder: function update_match(slot, match, s) { $("#match" + slot + " i").text(match); console.log(window); console.log(window.saves1); // undefined console.log(window.external.saves1); // undefined (slot == 1) ? window.saves1.item = s : window.saves2.item = s; } The

问题 How can I make scope of a String variable(In Java) global.So that it is accessed from another function Eg //String b="null"; I don't want to do this... because if i do this, fun2 will print Null public int func1(String s) { String b=s; } public int func2(String q) { System.out.println(b);//b should be accessed here and should print value of s } Any Help... Thanks 回答1: One of the fundamental concepts in OOP is the concept of scope: in almost all cases it is wise to reduce the scope of a

问题 I'm trying to make a program like AutoHotKey, but with a graphical interface. I'm using java.awt.Robot Now I want to make the code for checking the state from a key (In AHK: getKeyState) Of course somthing like a KeyListener without having focus. I read already something with JNI and C++, but.... I can't find some information. Can somebody help me?? 回答1: There are lot of good JNI resources for starting out with JNI Programming like the Sun JNI Tutorial. Almost all Tutorials assume a good

问题 I'm trying to find a similar record between two data sets in a dictionary with which to do further comparisons. I've confirmed with a print statement that it is finding a matching data set (so all of the code before the final if statement is working). However it is not setting the matchingSet2Record for some reason. This causes the final if statement to always run even though it is finding a match. Declaring the variable as being in the global variable scope does not work. What is causing

问题 I know this has already been discussed multiple times here but I would like to further and clear understanding why it's bad practice to use global variables. Does it becomes dangerous on the concurrent http requests? if this is the code: <?php $variable1 = $_REQUEST['userinput']; sleep(3000); echo $variable1; ?> if there are users like user1, user2.. if user1's input is 'request1' and user2's input is 'request2' that is passed to $_REQUEST['userinput'] variable, then concurrent sending of

问题 I have an application that displays a list of photo albums and then, once an album is selected, displays photos in that album. I am using the memory cache/disk cache implementation from one of the google examples (since the photos are loaded from a website). Everything is working fine, but the disk cache initialization takes place every time an album is chosen, and the initialization takes considerable amount of time. I'd like to declare the disk cache "globally" and use it for all albums. I

问题 A quick question I hope. I would like to know why the line commented out below causes an error when placed at the global level while it works fine when placed inside the main function? Many Thanks #include <iostream> using namespace std; bool compare(const int &v1, const int &v2) { if (v1 < v2) { return true; } else { return false; } } bool (*pf5)(const int &v1, const int &v2); //pf5 = compare; int main() { int v1 = 5; int v2 = 6; pf5 = compare; bool YesNo1 = compare(v1, v2); cout << YesNo1 <

问题 I was trying to implement simple authentication in R that would store credentials outside of the source code under revision control. I'm aware of the approach using options() and getOption() , but using it would force me to remove project-level .Rprofile from revision control. I prefer to use another approach, based on exporting credentials' environment variables via .bashrc of an R-associated Linux user ( ruser ) and then reading these credentials in project-specific .Rprofile into global

问题 I have written the following code for a project however it fails a singular test asking for two variables to not be global, and instead be local to main() . Modify structexample1.c so that the variables student and anotherStudent are not global but are local to main. I vaguely understand the local and global concept but I am unsure how to implement what the question is asking into the code I have written. #include <stdio.h> #include <stdlib.h> struct student_s { char* name; int age; double