local-variables

global or local variables in a jquery-plugin

由 拥有回忆 提交于 2019-12-03 09:57:27
问题 How is it possible to give a jquery-plugin individual local variables, that are accessable in different plugin-functions? My script shows an alert with the content '123', but I am expecting 'abc'. So variable 't' exists only once and not twice for each plugin. So for each plugin-instance there should be also an instance of variable 't'. <html> <head> <title></title> <script type="text/javascript" src="jquery/jquery-1.7.min.js"></script> <script src="http://ajax.googleapis.com/ajax/libs

How to declare a variable in SQL Server and use it in the same Stored Procedure

由 可紊 提交于 2019-12-03 08:06:32
问题 Im trying to get the value from BrandID in one table and add it to another table. But I can't get it to work. Anybody know how to do it right? CREATE PROCEDURE AddBrand AS DECLARE @BrandName nvarchar(50), @CategoryID int, @BrandID int SELECT @BrandID = BrandID FROM tblBrand WHERE BrandName = @BrandName INSERT INTO tblBrandinCategory (CategoryID, BrandID) VALUES (@CategoryID, @BrandID) RETURN 回答1: What's going wrong with what you have? What error do you get, or what result do or don't you get

Create Html local variable programmatically with Angular2

由 谁都会走 提交于 2019-12-03 08:04:48
I need to know if there is a way to create HTML local variables programmatically. I am developing a web app where I have an NgFor loop and I want to be able to assign a local variable to each sub element created by the NgFor. ie : <div *ngFor="#elt of eltList" > <span #setLocalVariable(elt.title)></span> </div> setLocalVariable(_title : string){ let var = do some stuff to _title; return var; } The exemple above shows you what I am trying to accomplish and obviously does not work. Is there a way to achieve this ? Thank you in advance. Edit: After seeing the answers I got (and i thank everyone

Why can a local variable be accessed in another thread created in the same class?

由 。_饼干妹妹 提交于 2019-12-03 03:54:44
问题 I couldn't really find anything on this exact topic, so please lead me toward the right direction, if a question already exists. From what I have learned about .NET, it is not possible to access variables across different threads (please correct me if that statement is wrong, it's just what I have read somewhere). Now in this codesample, however, it then seems that it shouldn't work: class MyClass { public int variable; internal MyClass() { Thread thread = new Thread(new ThreadStart

What is the difference between a threadvar and a local variable

由 泄露秘密 提交于 2019-12-03 03:45:58
In my threads, I always declare local variables "normally", thus: procedure TMyThread.Execute ; var i : integer ; begin i := 2 ; etc, If I declare them thus: procedure TMyThread.Execute ; threadvar j : integer ; begin j := 2 ; how does execution/code generation/speed/thread-safety alter? Well for a start the code with the threadvar is invalid syntax. A threadvar needs to have unit scope rather than local scope. Local variable Each invocation (including from different threads, and re-entrant calls) of a function results in different instances of that function's local variables. Thread local

Why are local variables accessed faster than global variables in lua?

由 偶尔善良 提交于 2019-12-03 02:06:24
So I was reading Programing in Lua 2nd Ed and I came across this paragraph here: It is good programming style to use local variables whenever possible. Local variables help you avoid cluttering the global environment with unnecessary names. Moreover, the access to local variables is faster than to global ones . Could anyone explain why this is? And is this "feature" only in Lua, or is it in other languages aswell? (e.g. C, C++, Java) antonakos The difference in running time is due to the difference between hash table lookup and array lookup. An interpreter might be able to place a local

Returning an address of local variable behaviour [duplicate]

由 一个人想着一个人 提交于 2019-12-02 22:39:30
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Can a local variable's memory be accessed outside its scope? input: #include <stdlib.h> #include <stdio.h> int func2(void); int* func1(void); int func2(void) { int* b; b = func1(); printf("%d", *b); printf("%d", *b); printf("%d", *b); } int* func1() { int a = 13; return &a; } int main() { func2(); } Output: 13 -1077824828 -1077824828 Can someone explain what happened in the stack and OS? Why the result changed

Can i declare a static variable inside static member function in Java?

由 老子叫甜甜 提交于 2019-12-02 21:16:50
private static int Fibonoci(int n) { static int first=0; static int second=1; static int sum; if(n>0) i am getting a error "Illegal Modifier" and if i remove static keyword there is no error and i need those variables to be static You can not declare varibale as static inside a method. Inside method all variables are local variables that has no existance outside this method thats why they cann't be static. static int first=0; static int second=1; static int sum; private static int Fibonoci(int n) { //do somthing } You are trying to write code for fibonacci series and for that you don't need

Can a local variable be used out of a method?

由 為{幸葍}努か 提交于 2019-12-02 17:42:00
问题 I've got stuck in a problem about local variables. The following is not my original code but I use a simple example to present my question: import java.util.Scanner; public static void main(String[] args) { Scanner userScan=new Scanner(System.in); do{ int input1=userScan.nextInt(); }while(input1>10); } My purpose is to let a user type in an integer which is in my intended range. If the typed number does not meet the rule, I hope the user can type again until it does. However, the "input1" is

Why can a local variable be accessed in another thread created in the same class?

由 北城以北 提交于 2019-12-02 17:18:10
I couldn't really find anything on this exact topic, so please lead me toward the right direction, if a question already exists. From what I have learned about .NET, it is not possible to access variables across different threads (please correct me if that statement is wrong, it's just what I have read somewhere). Now in this codesample, however, it then seems that it shouldn't work: class MyClass { public int variable; internal MyClass() { Thread thread = new Thread(new ThreadStart(DoSomething)); thread.IsBackground = true; thread.Start(); } public void DoSomething() { variable = 0; for (int
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