global-variables

问题 I have a page named ChangeApprovalInfo.php - It has a function called Row_Rendered as follows; function Row_Rendered() { // To view properties of field class, use: //var_dump($this-><FieldName>); $RecordOwner = $this->RequestUser->CurrentValue; echo $RecordOwner; } Echoing $RecordOwner gets me the data I will need for a sql query on another page.... I have another page called ChangeApprovalEdit.php - This page has <?php include_once "ChangeApprovalinfo.php" ?> at the top of the file.

问题 I have a page named ChangeApprovalInfo.php - It has a function called Row_Rendered as follows; function Row_Rendered() { // To view properties of field class, use: //var_dump($this-><FieldName>); $RecordOwner = $this->RequestUser->CurrentValue; echo $RecordOwner; } Echoing $RecordOwner gets me the data I will need for a sql query on another page.... I have another page called ChangeApprovalEdit.php - This page has <?php include_once "ChangeApprovalinfo.php" ?> at the top of the file.

问题 I have two external Javascript files. I declared a variable in one file and I am trying to access the variable from other. When I try to access it, it returns undefined . <script src="script1.js"></script> <script src="script2.js"></script> script1 : $(function(){ var myvar=35; }); script2 : $(function(){ alert(myvar); //this line causing error undefined. }); 回答1: Your variable isn't global. You've declared it inside a function so it is local to that function. You need to move the var

问题 Very new to python and wanted to create a GUI window that i plan to use for a Query tool later. I keep getting global name root not defined error. I am trying to create a user interface that has a window. I probably am missing Object concepts. Need some help. Thanks. Here is my code: from Tkinter import * class GUI(Frame): """A Graphical User Interface Class for building a GUI Frame. Attributes: master : """ def __init__(self,master): Frame.__init__(self,master) self.grid() self.menubar()

问题 I get this out put =============================== RESTART: Shell =============================== >>> Warning (from warnings module): File "E:/Python/Roy Progs/test.py", line 2 global x SyntaxWarning: name 'x' is assigned to before global declaration >>> ==================== RESTART: E:/Python/Roy Progs/test.py ==================== 10 >>> when I run this code. x=5 global x x=10 print x Yes I know that defining a variable after assigning it a value is absurd, however python seems to understand

问题 Let's say I got a global variable called myData. It was declared as myData = 1; at the beginning of a script. Goal: I want to create a single module that will not have access this myData in any way. myData must remain global in other modules. Note: Yes, I already do know that I could require myData in every page where I need it but that's not what I'm looking for. Attempts: To do that, at the very beginning of the module, I wrote: var myData; . The module could no longer access myData

问题 Is it possible to use one variable in Excel VBA across multiple workbooks? Without using Add-in approach? as mentioned in here. For e.g I am saving Windows User name in var sysUser and want to use this variable in multiple workbooks, how can I do that? Thanks and best regards Ahmed 回答1: http://www.cpearson.com/excel/trulyglobalvariables.htm This link contains two great solutions to this problem. Be sure to drill down to the "hidden name" technique's link which is short and sweet. Here's the

问题 I declared a global static pointer out of main function in main.cpp file. Do I need to initialize it in each cpp file it is used? // main.cpp ... static int *levels; ... int main() ... Then, if I have to initialize it in some other files rather than main.cpp, then what is the usage of global static variable? I can declare separate pointers in each cpp file. 回答1: I would not generally advise to use singleton classes is good style, but here's what I would do: MySingleton.hpp: class MySingleton

问题 This question already has answers here : Javascript function scoping and hoisting (16 answers) Closed 5 years ago . why does the following code segment generate the following output? code segment: var a = 10; function(){ console.log(a); var a = 5; } output: undefined 回答1: Because variable is hoisted at top and in your function you have declared the variable var a = 5 which is same as following: var a = 10; function(){ var a; // a = undefined console.log(a);//a is not defined so outputs

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