|
| |
| | Global variable - Wikipedia, the free encyclopedia |
 | | In computer programming, a global variable is a variable that does not belong to any subroutine in particular and can therefore can be accessed from any context in a program. | | | They are usually considered bad practice precisely because of their nonlocality: a global variable can potentially be modified from anywhere, and any part of the program may depend on it. | | | A global variable therefore has an unlimited potential for creating mutual dependencies, and adding mutual dependencies increases complexity. |
|
http://en.wikipedia.org/wiki/Global_variable
(192 words)
|
|
| |
| | The Old Joel on Software Forum - Global Variable Subtlety |
| | Global Variables are said to be bad for all the reasons given previous, they are hard to debug, they make functions have hidden dependencies (the function definition doesn't tell you what it does, without reading it's entire source), they make it impossible to easily extract and re-use some code. | | | One problem with a global variable is that to know who is reading/writing it you must know the entire program. | | | In Java, for example, the System variable is global and every time you use System.out.println() you are using it. |
|
http://discuss.fogcreek.com/joelonsoftware?cmd=show&ixPost=43421
(2026 words)
|
|
| |
| | Lab 9 - Scope, Lifetime, and More on Functions |
| | A static variable is similar to a global variable in that its memory remains for the lifetime of the entire program. | | | A local variable that is declared as static causes the program to keep the variable and its latest value even when the function that declared it is through executing. | | | Thus other functions in the program can not modify a static variable's value because only the function in which it is declared can access the variable. |
|
http://www.mtsu.edu/~csci117/manual/lab9/lab9.html
(1851 words)
|
|
| |
| | Global variable diagnostic script |
| | Global variables are one of the key objects for building flexible and dynamic packages, so obviously the value of a variable at run-time is very important. | | | This script will highlight the presence of both variables, the original one defined when you created the package and the new one that is created implicitly when you call the package with the incorrect variable name. | | | When trying to debug a package and isolate the problem, it is not always practical to use a full debugger, and sometimes it is just simpler to use a more manual approach to isolating problems. |
|
http://www.sqldts.com/default.aspx?303
(312 words)
|
|
| |
| | Namespaces |
| | You should avoid using global variables because it can be hard to be sure that no two parts of the program are using one another's variables by mistake. | | | Global means that package variables are always visible everywhere in every program. | | | That turned out to be a problem, so language designers invented local variables, which were visible in only a small part of the program. |
|
http://perl.plover.com/FAQs/Namespaces.html
(3002 words)
|
|
| |
| | Globalization @ Globalists.com |
| | In general, critics claim that the results of globalization have not been what was predicted when the attempt to increase free trade began, and that many institutions involved in the system of globalization have not taken the interests of poorer nations, the working class, and the environment into account. | | | In the field of software, globalization is a technical term that combines the development processes of internationalization and localization. | | | The other aspect of globalization is the revolutionary change in technology, particularly in transport and communication, which ostensibly creates a global village. |
|
http://www.globalists.com
(5758 words)
|
|
| |
| | PHP: Variable scope - Manual |
| | The variable is static with respect to the function and not the class. | | | It should be noted that a static variable inside a method is static across all instances of that class, i.e., all objects of that class share the same static variable. | | | Even if the included file seems to define global variables, they might not be defined as such. |
|
http://us3.php.net/global
(4457 words)
|
|
| |
| | Global and satic variables |
| | We could have made x a global variable, and that would work too, but this could be one of those cases where it is bad style. | | | As we have seen, variables that are declared in a function cannot be shared with other functions. | | | Any function you put in a program with a global variable can use it, just as if it where its own. |
|
http://home.earthlink.net/~azraelle/Cweb/statglob.htm
(735 words)
|
|
| |
| | Proc Chart Locals |
| | The CPU executes the output command in show, printing out first the value of the local variable y (which we can see from local context #140 is 3), and then the value of the global variable x (which can be seen to be 20 from the PAC). | | | The value in the uninitialized variable is whatever was left over in that memory space by the last allocation. | | | A final feature lies in the fact that the local variable x belonging to the main procedure's context #100 is not initialized. |
|
http://core.ecu.edu/csci/wirthj/ProcActiv/ParametersA-c.html
(1453 words)
|
|
| |
| | Global variable solution - LAVA Forums |
| | We have been doing some optimizing of some existing monster code and we have found that instances of global variables is a problem. | | | Basically the solution is this: At the top level, we have one instance of one of the global variables just to ensure that the vi is in the heirarchy and in memory. |
|
http://forums.lavag.org/index.php?showtopic=1063
(916 words)
|
|
| |
| | CleanCode::Code::Variables (VR1) |
| | You create a variable in one file and you use it only in that file... | | | But, of course, that depends on how you define "global variable". | | | The class is the fundamental entity within a file; in fact, a file can only contain classes, everything else is defined inside classes. |
|
http://cleancode.sourceforge.net/wwwdoc/codingRules/vr1.html
(892 words)
|
|
| |
| | Javascript: Global variable declaration |
| | But when you assign a value while you're creating a variable, as in example 3, var is optional (except in recursive functions). | | | However it is considered good pratice to always use var as it makes it easier to see where you have declared your variables. | | | Should `var` be used outside or inside functions? |
|
http://experts.about.com/q/1520/430463.htm
(243 words)
|
|
| |
| | Global Variables In COBOL |
| | The same module provides a form of environmental variable: it loads variables from a file, and thereafter treats them as simulated global variables. | | | You use global variables to pass detailed information about fatal error conditions back up to the main program. | | | Since an EXTERNAL variable cannot have a VALUE clause, it can be initialized only in the PROCEDURE DIVISION. |
|
http://home.swbell.net/mck9/cobol/tech/globals.html
(773 words)
|
|
| |
| | Using Data Transformation Services: Capture Recordset with a Global Variable |
| | The input and output parameters of a query were mapped to the input and output global variables using the Execute SQL Task, a frequently used DTS task. | | | In a previous tutorial we have seen how input and output global variables can be set up, and how they can be manipulated using Activex script. | | | In this tutorial, we will be looking at a number of rows (rowsets) returned by a select query against the SQL 2000 database and assigning them to a single global variable. |
|
http://www.aspfree.com/c/a/MS-SQL-Server/Using-Data-Transformation-Services-Capture-Recordset-with-a-Global-Variable
(494 words)
|
|
| |
| | WebDeveloper.com - global variable |
| | so as posted above the scope of a variable is,indeed, determined by the use of var keyword.A variable inside the function with the var keyword is a local variable a variable without var key word inside of a function will have a global scope | | | In my code, i declare "actual", "base", "score" as global variables. | | | 1) A variable defined inside a function without var is in the global scope. |
|
http://www.webdeveloper.com/forum/printthread.php?t=4180
(272 words)
|
|
| |
| | Redstone's Eggplant Community :: View topic - how to use global variable |
| | The only way to access global or universal variables is to declare them as such in each handler where you need access to them. | | | Each step of the way, you can examine the current contents of any of the variables by typing "put var1" or "put global var2" in the Ad-Hoc Do Box at the bottom of the Run window. | | | global var1, var2 -- declare 2 global variables |
|
http://www.redstonesoftware.com/phpbb2/viewtopic.php?t=184
(854 words)
|
|
| |
| | AskTom "Global variable across different session..." |
| | We are currently in the process of upgrading to 9i, and was thinking of using the global context feature to do that. | | | What would your solution in Java be if all of your java processes needed to access the same variable -- you'd have to write some OS dependent stuff and use shared memory, a memory mapped file or an OS file. | | | Well, thats not like a static variable in a java program -- the analogy would be that if I changed a static variabe in java -- every program running out there would see the same value! |
|
http://asktom.oracle.com/pls/ask/f?p=4950:8:11620629241111430689::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:1578344046713
(1302 words)
|
|
| |
| | Keyword Dim / Global / Local / Const |
| | To erase an array (maybe because it is a large global array and you want to free the memory), simply assign a single value to it: | | | Declare a variable, a constant, or create an array. | | | Once created you cannot change the value of a constant. |
|
http://www.hiddensoft.com/autoit3/docs/keywords/Dim.htm
(339 words)
|
|
| |
| | HOW to access global variable - dBforums |
| | how do I access global in the function where local of the same name is defined.. | | | There are ways to access the file scope variable using extern as detailed elsewhere | | | > > how do I access global in the function where local of the same name is defined.. |
|
http://www.dbforums.com/t387341.html
(1288 words)
|
|
| |
| | MusicWonk Global Variable Module |
| | Global variables exist in two parts, the variable data base which is global and accessible at any macro level, and the local variable module that accesses the global variable, which only exists at the local macro level. | | | Global variables may contain either values or text. | | | Global variables are not the same as the local Const and LocVar modules, which are regular modules that are only accessible at the local macro level. |
|
http://algoart.com/help/musicwonk/globalvariable.htm
(579 words)
|
|
| |
| | Excel global variable? :: MrExcel Message Board |
| | The reason I dislike global variables is that they take up unnecessary space and they are notoriously difficult to control since anything can change them. | | | There may be other workbooks open, such as a file search (excel file), or one of many others which i dont want to do anything with | | | Is this not the correct way to do this? |
|
http://www.mrexcel.com/archive2/5200/5786.htm
(1463 words)
|
|
| |
| | [No title] |
| | To use it declare $dbi as global and be sure your database queries looks like: $result = sql_query("select uid from nuke_users", $dbi); list($uid) = sql_fetch_row($result, $dbi); pretty easy and transparent to use and implement, valid for fetch arrays, numrows, object, row, etc. You can take a look at sql_layer.php file in /includes/ directory. | | | September 2002: Version 6.0 =========================== - Almost all config.php variables are now stored in the database. | | | Remember to edit the config.php file and set $subscription_url variable with the subscription information page on your site. |
|
http://phpnuke-uk.net/changelog.txt
(4063 words)
|
|
| |
| | global variable : Java Glossary |
| | Java avoids polluting the namespace by making you refer to such "globals" by preceding them with a class name, e.g. | | | Math.PI, or MyClass.useCount, unless of course your class inherits or implements the class or interface that defines the "global". | | | You can get the same sorts of effects with classes that have static variables, static {.. |
|
http://mindprod.com/jgloss/globalvariable.html
(188 words)
|
|
| |
| | vars - Perl pragma to predeclare global variable names |
| | While the vars pragma cannot duplicate the effect of package lexicals (total transparency outside of the package), it can act as an acceptable substitute by pre-declaring global symbols, ensuring their availability to the later-loaded routines. | | | Packages such as the AutoLoader and SelfLoader that delay loading of subroutines within packages can create problems with package lexicals defined using | | | vars - Perl pragma to predeclare global variable names |
|
http://www.xav.com/perl/lib/vars.html
(142 words)
|
|
| |
| | [No title] |
| | 5); for z from 1 to 5 do a := a + 2*z; od end; Output: p:= proc(a) local b; global x,y,z; b := seq(2*y, y = 0.. | | | end; This next example adds a global statement to the procedure. | | | The program reads from command line files or from standard input and writes to standard output. |
|
http://zephyr.rice.edu/comp.res/software/unix/manpages/updtsrc.html
(470 words)
|
|
| |
| | Global Variable - Excel Help/VBA Help: |
| | In the module i am checking the status of boolean variable based on that value generate option will enable/disables. | | | In form module I am trying to assign true to the variable if the user enter correct information else false then i am unloading the form to return to calling module. | | | But the boolean variable is not retaining its value when the form unloads. |
|
http://www.ozgrid.com/forum/showthread.php?t=33208
(457 words)
|
|
| |
| | FreeVBCode.com Forum: Re:Global variable |
| | In this example, I tend to think of classes and collection objects but you may not want to take the time right now to familarize yourself with these concepts. | | | Actually, there are several ways you can do this. | | | It is a good practice to declare your variables at the lowest level possible this will protect your variable from being overwritten and maintain the integrity of the variable. |
|
http://www.freevbcode.com/ShowMessage.asp?ID=44735
(117 words)
|
|
| |
| | global variable. - ActionScript.org Forums |
| | // This variable will only exist within the scope it was defined // If it was decalred in a for loop, as long as that for..loop is // looping it will exist var VariableName = "string"; //This variable exists within the timeline (or movieclip) in which it was defined. | | | the variable name of the input box being "mytext_eng" | | | I have on the first frame an input box and a dynamic box. |
|
http://www.actionscript.org/forums/showthread.php3?t=44065
(536 words)
|
|
| |
| | Interrupt and global variable |
| | Note that the 'data' word forces the var into the DATA area, the fastest RAM after registers on the 8051. | | | value of the variable to 0 in the "main" function, but in the Interrupt | | | The g_ prefix is a quick and ugly reminder that this variable is global and can be destroyed by any function in any file that externs it. |
|
http://www.keil.com/discuss/docs/thread57.htm
(315 words)
|
|
| |
| | WebDeveloper.com - Global variable |
| | I have a function in a class doing something and I want function in another class to see the same variable. | | | Each php file which will be run as part of the session needs a | | | 12-08-2004 09:03 AM An even better solution would be to redesign it so that you don't need to use global variables (which are always a maintenance nightmare). |
|
http://www.webdeveloper.com/forum/printthread.php?t=50858
(351 words)
|
|
| |
| | RE: global variable and position() once more |
| | > So far the descPos variable gets a wrong value, always 1 and > the mentioned text node has > a position 30 or more on some other input documents. | | | > I can't manage to store in the descPos global variable the > position of the node that > starts with 'Description', when I try > select="//text()[starts-with(normalize-space > (),'Description')position()] or try to get the position > function somewhere in that XPath > expression I get errors. | | | My problem is that > I need to select the text nodes after a text node that starts > with the > word 'Description'. |
|
http://www.stylusstudio.com/xsllist/200308/post41220.html
(424 words)
|
|
| |
| | Define global variable - LinuxQuestions.org |
| | The question is that instead of having to always do this and open my app from a shell i'd like to permanently define this enviromental variable (for all users) in a scope that will allow me to open the app from, say, a desktop icon or launch menu. | | | I can then open my application from the shell without errors. | | | It must be a Debian quirk because that procedure works on every other distro that I have tried. |
|
http://www.linuxquestions.org/questions/showthread.php?p=2138998#post2138998
(474 words)
|
|
| |
| | EPOCH Global Variable Utilities |
| | - returns the maximum number of variables in a global segment. | | | Before retrieving the value of a global variable, you must initiate updates to the variable's value. | | | The GV_UTIL package takes a different approach: rather than requiring a local global server and shared memory, the GV utilities communicate directly with the home global server of the target global segment in order to get information about the variables and to retrieve or store the values of variables. |
|
http://www.geonius.com/software/epoch3/gv_util.html
(551 words)
|
|
| |
| | The PHP Global Statement - PHP |
| | As you can see, this statement ends with a semicolon. | | | This is the global statement that will make the value to the $first_name variable available to the function. | | | Inside the opening { and closing } is the code for the body of the function. |
|
http://www.bellaonline.com/ArticlesP/art28412.asp
(260 words)
|
|
| |
| | PHPBuilder.com - Global Server Variable |
| | May be you can just create a file at the first time, somewhere in the filesystem and | | | Is there a way I can create a global variable | | | that everyone can see but nothing on creating a real global variable. |
|
http://www.phpbuilder.com/board/printthread.php?t=630002
(262 words)
|
|
| |
| | Global Variable for passing argument - Dev Shed |
| | Viewing: Dev Shed Forums > Programming Languages > PHP Development > Global Variable for passing argument | | | Is there some global variable that would hold the value of "value" in it? | | | PHP is an open source scripting language that has taken the web development industry by storm. |
|
http://forums.devshed.com/php-development-5/global-variable-for-passing-argument-4429.html
(197 words)
|
|
| |
| | Global Variable Namespaces |
| | creates a new namespace; the flag-symbols are options that determine the kinds of global names that are initially bound in the new namespace. | | | d, the global variable references in the compiled expression are permanently attached to a particular namespace, so the current namespace at the time that the code is executed is not used as the namespace for referencing global variables in the expression. | | | Any number of flag-symbolss can be specified, where each flag-symbol is one of the following symbols: |
|
http://www.cs.rice.edu/CS/PLT/packages/101/doc/mzscheme/node95.htm
(273 words)
|
|
| |
| | Declaring Global Variable in JSP |
| | You can place objects in the application object. | | | But Java doesn't have the concept of global variable. | | | Can you suggest a wayout of how I can declare a Global variable in JSP which can be accessed by various methods, like we do in init() method of Servlets ? |
|
http://www.theserverside.com/discussions/thread.tss?thread_id=2588
(651 words)
|
|
| |
| | MATLAB Central - Newsreader - Global variable in Function |
| | An open exchange for the MATLAB and Simulink user community | | | MATLAB Central - Newsreader - Global variable in Function | | | I think all variabls in the base workspace are global. |
|
http://newsreader.mathworks.com/WebX?14@54.C1A6apAuY2h.0@.ef0acae
(343 words)
|
|
| |
| | Global Specialties Variable Power Supply AC/DC Model 1315 |
| | Input surge suppressor input fuse protected and output overload trip | | | Rugged general purpose supply offering either AC or DC variable outputs of 0-25V @ 0-5 amps. | | | This unique power supply is a low-cost space-saving solution for applications requiring both AC and DC voltages, covering a wide range of testing situations. |
|
http://www.elexp.com/tst_1315.htm
(191 words)
|
|
| |
| | Novemberborn: Externally Declared Global Variable Leak |
| | Declaring the circular reference variable – which is global as well – in the iframe window has no effect. | | | As you can see in the tests the leak occurs if the global variable is declared in the main window. | | | For fun I’ve added a ~ 20 MB object to the tests, so the leaking will be rather obvious. |
|
http://novemberborn.net/javascript/edgvl
(240 words)
|
|
| |
| | passing XML tag as global variable within XSL StyleSheet - Dev Shed |
| | Also as far as i know variables are only available to the document in which they reside. | | | I'm new to ultrashock, and I am unfamiliar to the environment, and I was hoping I could turn to some of the shockers with XML/XSL experience. | | | WHats the appropriate way to declare a variable like this one? |
|
http://forums.devshed.com/xml-programming-19/passing-xml-tag-as-global-variable-within-xsl-stylesheet-70775.html
(512 words)
|
|
| |
| | [No title] |
| | w ó ¨ Auto Storage class ¨á Formal parameters and local variables of functions are variables that are automatically allocated on the stack when a function is called and automatically deallocated when the function returns. | | | i n t s q u a r e ( i n t ) ; / / F u n c t i o n p r o t o t y p e i n t m a i n ( ) { i n t x ; / / l o c a l v a r i a b l e f o r ( x = 1 ; x |
|
http://grail.cba.csuohio.edu/~sanchita/cis260/classnotes/Scope.ppt
(1251 words)
|
|
| |
| | INF: @@TRANCOUNT Global Variable Detects Rollback |
| | Please note that when writing a DB-Library (DB-Lib) program, @@TRANCOUNT is global to one dbproc. | | | This global variable can be used in the middle of a BEGIN TRANSACTION... | | | @@TRANCOUNT is a global variable that contains the number of currently active transactions for the current user connection. |
|
http://support.microsoft.com/default.aspx?scid=kb;en-us;68938
(305 words)
|
|
| |
| | Global Variable? - ActionScript.org Forums |
| | Is it possible to create a global variable? | | | Basically, i have my script load an image at runtime, and then when they click it, it would be full size, but change, i need a way to put the url into a variable at runtime, and be able to use that variable in another frame, and be able to change it.. |
|
http://www.actionscript.org/forums/showthread.php3?t=30965
(131 words)
|
|
|
