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• Checking for a variable in the executable

  - by rboorgapally

  Is there a way to know whether a variable is defined, by looking at the executable. Lets say I declare int i; in the main function. By compiling and linking I get an executable my_program.exe. Now, by looking inside my_program.exe, can I say if it has an int eger variable i ?

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• one variable for all the sql output

  - by kdev

  hi everyone myRs=myStmt.executeQuery("select i_col,col_name from tab_col") i=0 while (myRs.next()): list= myRs.getString("I_COL")+','+myRs.getString("COL_NAME") i have a jython code to run a sql statement i want to store all the row of the sql into a single variable. I used to list to store the value but its always storing only the single line , so is there is way to append all the rows and keep adding to single variable. Thanks so much for your help.

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• Open a save file dialog for a js variable

  - by Constructor

  In my web app I need to give the user the option to save a js variable as a file (when the user clicks download, the app offers him to save a file, preffereably as .js file). Similarly as google docs offers you to save a file. Is it possible for javascript to pass it's variable this way?

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• powershell function output to variable

  - by tommy

  I have a function in powershell 2.0 named getip which gets the IP address(es) of a remote system. function getip { $strComputer = "computername" $colItems = GWMI -cl "Win32_NetworkAdapterConfiguration" -name "root\CimV2" -comp $strComputer -filter "IpEnabled = TRUE" ForEach ($objItem in $colItems) {Write-Host $objItem.IpAddress} } The problem I'm having is with getting the output of this function to a variable. The folowing doesn't work... $ipaddress = (getip) $ipaddress = getip set-variable -name ipaddress -value (getip) any help with this problem would be greatly appreciated.

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• return the variable used for using inside the using C#

  - by di3go

  Hello, I am returning the variable I am creating in a using statement inside the using statement (sounds funny): public DataTable foo () { using (DataTable properties = new DataTable()) { // do something return properties; } } Will this Dispose the properties variable?? After doing this am still getting this Warning: Warning 34 CA2000 : Microsoft.Reliability : In method 'test.test', call System.IDisposable.Dispose on object 'properties' before all references to it are out of scope. Any Ideas? Thanks

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• alert a variable value

  - by muqtar

  How do I display the value of a variable in javascript in an alert box? For example I've got a variable x=100 and alert(x) isn't working.

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• Find out what variable is throwing a NullPointerException programatically

  - by Hectoret

  I know I can find out if a variable is null in Java using these techniques: if (var==null) - too much work try { ... } catch (NullPointerException e) { ...} - it tells me what line is throwing the exception using the debugger - by hand, too slow Consider this line of code: if (this.superSL.items.get(name).getSource().compareTo(VIsualShoppingList.Source_EXTRA)==0) { I would like to know if there's a generic way to find out programatically what variable (not just the line) is throwing the NullPointerException in a certain area of code. In the example, knowing that

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• default values for variable argument list in Python

  - by deamon

  Is it possible to set a default value for a variable argument list in Python 3? Something like: def do_it(*args=(2, 5, 21)): pass I wonder that a variable argument list is of type tuple but no tuple is accepted here.

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• Why does subshell not inherit exported variable (PS1)?

  - by amn

  After some debugging I finally narrowed down the problem as to why my X session xterm prompt does not appear according to my PS1 setting. If I run sh -c env, it doesn't even show PS1 in the list. Why? export PS1='test' sh -c env # No PS1 in the list, default prompt appearance (shell name + version) Substituting sh with bash yields same result, alas the behavior appears to be the same for both shells/modes. As far as I understood from man bash, the environment resulting from command run by shell with -c should include the exported variables. And it does - exporting FOOBAR results in FOOBAR listed in env run by subshell. It appears that the story is different if the variable is PS1 however. What is going on? I want my prompt propagated throughout the process tree and system. For matters sake, it is set in /etc/profile.d/user.sh (a file I created myself) with the following: PS1='\u@\H \w \$ ' export PS1 I am running Arch Linux (updated yesterday.)

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• assigning a specific record in a ResultSet to a variable

  - by kilhra

  Hi I want to retrieve a set of records from a database, do a rs.next() and then assign the result of this to a variable to pass to a method that will use this record, in the same way that I would without assigning it to a variable and passing it to a method is there any way to do this? I'm using JAVA (1.5)

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• Using a array variable in a foreach loop

  - by Jess McKenzie

  I am having an issue trying to work out how to use a function variable in a foreach loop so that I can do the following but its not working. $var = array(7) { [0]=> array(3) { ["listingId"]=> int(532712629) } [1]=> array(3) { ["listingId"]=> int(532712202) } Works but not right: foreach($var as $varr) { var_dump($varr['id']); { Goal - Having the array variable as the foreach value foreach($var['id'] as $item) { if($item === $foo) { } }

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• Environment variable for volume names in Windows?

  - by Shinrai

  I'm trying to write a batch file that will look at the volume label of the current drive and report if it's not equivalent to a certain string. Is there a default variable in the shell for this? Can I define one? Am I SOL and I'll actually have to do some (shudder) programming? EDIT: If this is possible in PowerShell that would work fine. (For the curious, we ship our machines with software cloning as a rapid bootable backup solution since most of our customers are daytraders and aren't interested in RAID due to urgency of getting-the-hell-back-to-work-right-away if there's a software corruption problem, and we want to make it immediately obvious if they're booting to the backup drive unintentionally, like say the primary failed entirely. The hope was just to write a simple batch file that would autostart on boot and throw a warning in the event of a problem.)

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• If a variable has getter and setter, should it be public?

  - by Oni

  I am an about to graduate Computer Science student so probably this is a stupid question. If I have a class with a variable that is private and the class have getter and setter for that variable. Why don't make that variable public? The only case I think you have to use getters and setters is if you need to do some operation besides the set or the get. Example: void my_class::set_variable(int x){ /* Some operation like updating a log */ this->variable = x; } Thanks in advance!

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• PATH variable recently changed

  - by Dan

  $ loopy Command 'loopy' is available in '/usr/games/loopy' The command could not be located because '/usr/games' is not included in the PATH environment variable. loopy: command not found Every answer I've found just says to add it to my .profile... but this should be be in the PATH for all users, and was up until recently (I have no idea what would have caused it to change). How can I solve this on my system for all users? What could have caused this to change? Thanks.

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• collect the value returned by netstat into a variable

  - by Kimi

  netstat -an | grep hypen echo $variable hypen | wc -l How to collect the value of netstat -an | grep echo $variable | wc -l to a varibale conn_count.

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• Read file contents into variable in batch file

  - by Faisal

  I want to read the contents of an external file in a variable inside a batch file. The contents of file contains multiple lines. I found a couple of ways but it either reads the first line or last line or its too complex. I want all content in one variable. Any easier way?

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• puppet propagate variable from node to erb tamplate?

  - by picca

  Is it possible to declare variable in node and than propage it way down to the erb template? Example: node basenode { $myvar = "bar" # default include myclass } node mynode extends basenode { $myvar = "foo" } class myclass { file { "/root/myfile": content => template("myclass/mytemplate.erb") ensure => present, } } Source of mytemplate.erb: myvar has value: <%= myvar %> I know that my example might be complicated. But I'm trying to propagate file on (almost) all my nodes and I want its content to be altered depending on the node which requests the file. The $myvar = "bar" statement should be default when node does not override its value. Is there a solution to my problem? I'm using puppet 0.24.5

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• Perl replace slash in variable

  - by cc96ai

  How can I replace the slash inside the variable? $string = 'a\cc\ee'; $re = 'a\\cc'; $rep = "Work"; #doesnt work in variable $string =~ s/$re/$rep/og; print $string."\n"; #work with String $string =~ s/a\\cc/$rep/og; print $string."\n"; output: a\cc\ee Work\ee

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• system() function in PHP prints variable 2 times.

  - by maxorq

  Stupid question, this code: <?php $variable = system("cat /home/maxor/test.txt"); echo $variable; ?> with file test.txt: blah prints: blah blah What can I do with system() function to not print nothing so I get 1 "blah"???

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• ServeletException, Property <variable name> not found

  - by k9yosh

  What i'm trying to do is add a new variable to this previously created Managed Bean Hello.java and use it in my xhtml file binding to a text field. But it seems that it is not being found when i run it on the server. So it throws a "ServeletException" and says that the "property 'lname'(my variable) is not found". How do i solve this and why is this happening? This is my managed bean, package stack.tute.malinda.model; import javax.faces.bean.ManagedBean; import javax.faces.bean.RequestScoped; @ManagedBean @RequestScoped public class Hello { private String fname; private String message; private String lname; //trying to add this new variable and use it in my xhtml file in a text field. public String getLname() { return lname; } public void setLname(String lname) { this.lname = lname; } public String getName() { return fname; } public String createMessage() { message="Hello " + fname + ""+ lname +"!"; return null; } public void setName(String fname) { this.fname=fname; } public String getMessage() { return message; } } This is my xhtml code, <h:body> <fieldset style="padding: 1em; float:left; margin-right:0.5em; padding-top:0.2em; text-align:left; border:1px solid green; font-weight:bold;"> <legend>Personal Details</legend> <h:form> <h:outputLabel for="name" value="First Name :" required="true"/> <h:inputText id="name" value="#{hello.name}"/> <br/> //Trying to access that variable here. <h:outputLabel for="name1" value="Last Name :" required="true"/> <h:inputText id="name1" value="#{hello.lname}"/> <h:message for="name"/> <br/> <h:commandButton value="Say hello" action="#{hello.createMessage}"> <f:ajax execute="@form" render="@form"/> </h:commandButton> <br/> <h:outputText value="#{hello.message}"/> </h:form> </fieldset>

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• Variable reference in a Groovy GString

  - by Maurits Rijk

  From the book "Groovy and Grails recipes" I'm using the following code snippet: String HelloLanguage = "def hello(language) {return \"Hello $language\"}" However, I get a compiler error "You attempted to reference a variable in the binding or an instance variable from a static context." because language can't be bound. What is wrong?

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• Is it possible to use jsp variable value to initialize JQUERY variable?

  - by Param-Ganak

  Hello Friends! I have some questions which are as follows: 1. How can I use the JSP variable/array in JQUERY code? Here what ever the JQUERY code we have is stored in separate .js file and that file is included in the JSP file. 2. Actually I want to initialize the JQUERY array with the JSP variable. So please guide me to achieve this task. Thank You

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• Does python have a session variable concept???

  - by gizgok

  I have a datetime.date variable in python.I need to pass it to a function do operations according to the date given and then increment the date for the next set of operations.The problem is I have to do the operations in diff pages and hence I need the date as a variable which can go from page to page. Can we do this in python.......

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• Environment variable expansion in persistence.xml (JPA)

  - by user342495

  I am developing a Eclipse RCP plugin which uses JPA. I tried to specify the database path via a variable give to the JVM on runtime. The property is set correctly but the database is created in a folder named after the variable name (here: ${DBHOME}). <property name="javax.persistence.jdbc.url" value="jdbc:derby:${DBHOME};create=true"/> Is there a possibility to fix this? Thx

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• Variable type for Application on Time Events [on hold]

  - by user2931226

  Been Trying to figure out how to go about setting a Variable for some Application On Time events, But still not confident to do it. These events (Macro's) get called by another Macro then they wait for 10 - 20 minutes, then they don't Run. So have read that (EarliestTime argument) should be assigned to a variable to store it other wise it looses it when other things are running Help appreciated Thanks Sub settimers() Application.OnTime TimeValue(Range("$X$9").Text), "StartBlink" Application.OnTime TimeValue(Range("$W$11").Text), "StopBlink" End Sub

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