super global variable

super global variable

A.政 2018-10-09 10:17:54 0  2  1131

c++ - How to store global variables?

First of all, I ask a question. It is said in books and online that after adding static to a variable, the scope is the current file. Without adding scope, it is the entire project. Does it mean that the variable with static can only be used in this file? I use a file to store the global Variable, I...

怪我咯 2017-07-03 11:42:03 0  1  1339

Calling a global variable cannot change the value of X

<?phpheader("Content-type:text/html;charset=utf-8");$x=5; // Global variable function myTest(){ $y=10; // Local variable global $x; echo " <p>Variables within the test function:<p>"; echo "changes

蓝翔特级** 2018-08-12 20:01:09 0  2  1182

How to assign global variables as parameters inside functions?

I want to directly use a global variable as a parameter of a function, and then assign a value to the parameter inside the function, instead of directly assigning a value to the global variable inside the function, so that it will not be hard-coded, but the test cannot assign a value. s = 1; a(s); f...

按键盘手指磨破皮 2017-09-02 15:15:41 0  2  2032

objective-c - How to change block variables into global variables

There is an external global variable self.array dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC); {code...} }NSlog(@"%@",self.array); //self.array here is empty. Please ask. How to give self.arra...

巴扎黑 2017-05-02 09:28:36 0  0  411

When JavaScript declares a variable in the global object, it will become a property of the same name of the global object, but when it is declared in a function, it will not. Why?

In JavaScript, after a global variable is declared globally, it becomes a property of the global object with the same name. However, after a local variable is declared in a function, it will not become an attribute of the function (object). Instead, it must be declared using "function name.attr...

仅有的幸福 2017-06-26 10:58:35 0  7  931

About global variables in PHP

Hello everyone, I read online the difference between the $_GLOBALS superglobal array and the global variables defined by global. The differences are as follows: $GLOBALS['var'] is the external global variable itself. global $var is the reference to the external $var variable of the same name. Refere...

高洛峰 2016-10-21 13:47:25 0  2  1214

javascript - variable scope issue

{Code...} Is name a global variable? Why is it undefined in the immediate execution function?

伊谢尔伦 2017-05-19 10:07:17 0  2  448

What is the scope of variables in JavaScript?

What is the scope of variables in JavaScript? Do they have the same scope inside and outside the function? Or does it matter? Also, if variables are defined globally, where are they stored?

P粉696891871 2023-08-21 15:35:39 0  2  563

Vim uses tern-for-vim and there is no way to avoid all global variables

Use tern-for-vim to complete js code, but there is no way to complete some global variables, such as: setTimeout, setInterval, document and other objects. As shown in the figure below, the completion of ordinary variables is normal.

ringa_lee 2017-05-16 16:37:48 0  2  697

A confusion about JavaScript global variables

The following code: {code...} I thought it would print out undefined. According to my understanding, b = 2 does not use var, so it declares a global variable. Since the variable is declared, there will be variable declaration promotion. Why is there ReferenceError: b is not defined? and...

ringa_lee 2017-05-18 10:56:05 0  5  602

How to get the global variable of an element to avoid being polluted?

var ele=document.getElementById('btn'); When writing native js, you need to obtain a large number of page elements. Now that there are too many global variables, how do you avoid being polluted?

曾经蜡笔没有小新 2017-05-19 10:11:18 0  4  604

Python global variable release?

Global variables need to be used in the project to store a large amount of data. This project will generally not be stopped, so this part will not be recycled. I have been tracking it for a while now, and I feel that this part of the memory is occupied, which greatly affects subsequent operations. S...

大家讲道理 2017-05-24 11:35:10 0  2  689

python - About global variables in Flask

Q: I watched a simple tutorial on Flask, but there is a question I don’t understand. Will the global variables of the app in Flask not go wrong when multiple clients access it? For example, will the tasks list in the code below not go wrong when multiple clients access it at the same time? When I us...

漂亮男人 2017-06-12 09:25:35 0  1  1113

Sass global variables and mixins not working

I have set up a project using Vue3.2.33 and Vite2.9.5 When I try to access any global variable or mixin from any vue component I get an undefined error. This problem does not occur in scss files. The import itself seems to work fine, as any css rules in it are valid. vite.config.ts：import{fileURLToP...

P粉722521204 2024-03-19 16:04:11 0  2  443

What is the meaning and function of setting $sum in function dir_size() to a global variable?

What is the meaning and function of setting $sum as a global variable in the last function dir_size() in function.php?

孙痴慢 2018-10-18 21:09:02 0  0  800

Where are the global initialization variables of an application similar to ASP generally set?

May I ask where the global initialization variables of an application similar to ASP are generally set? If so, and what are the references? Thank you.

stock2 2019-04-27 20:06:27 0  1  997

javascript - How to implement static variables in js

{Code...} Requirement: Click the button variable to increase by 1. Find the best way to achieve it. By the way, there are many ways to achieve this. Save directly to global variables - pollutes the global namespace. Use a global array to save the global variables of the current app - does not confor...

天蓬老师 2017-06-26 10:58:14 0  5  834

angular.js - About the problem of calling and using global variables after defining them in angularjs

The following is the method I found to define global variables (please point out if there is any misunderstanding): 1, myApp.run(function($rootScope) { {code...} }); 2.&lt;div ng-app= "myApp" ng-init="haha='test';"&gt; 3.app.value(key, value) 4.app.consta...

黄舟 2017-05-15 17:00:20 0  1  637

javascript - bcrypt.compare is used to verify passwords in Meteor. How to modify global variables in the callback function?

For example, in the process of reinventing the wheel, I use bcrypt.compare on the server side for password verification. I want to modify the global variable info in the callback function. How to achieve this? The code I wrote is as follows: {code...} console.log(info); the printed content is undefi...

过去多啦不再A梦 2017-05-16 13:45:27 0  1  875