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• [Python] - Getting data from external program

  - by Kenny M.

  Hey, I need a method to get the data from an external editor. def _get_content(): from subprocess import call file = open(file, "w").write(some_name) call(editor + " " + file, shell=True) file.close() file = open(file) x = file.readlines() [snip] I personally think this is a very ugly way. You see I need to interact with an external editor and get the data. Do you know any better approaches/have better ideas?

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• JSF Ajax refresh issue

  - by johnip

  In my JSF page, I have a dropdown that needs to be populated onload of the page which is set in request scope, now I have a Ajax call that refreshes a part of the page. The Ajax piece works fine but the issue is on refresh it also calls the getter for the Dropdown and returns null ( because its in request scope). To me it makes no sense to call the getter for a component that's not part of the Ajax refresh. Am I doing it correct , please suggest.

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• Showing a Captcha popup after failed login.

  - by thinker07

  I have created two asp.net pages, if x times the login fails, I want to call the captcha page (second page) in a popup window. How do I automatically call the second page as a popup window in the first page without using a hyperlink button? Are there any tutorials?

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• How to 'convert' char to function in C

  - by Tim van Elsloo

  Hi, void someFunction() { char *function = "anotherFunction"; const char *params[] = {"aVal","bVal","cVal"}; // How can I call the *function with the *params? } void anotherFunction(char *aKey, char *bKey, char *cKey) { // Do something with *aKey, *bKey and *cKey; } Does someone know how to call the *function with the *params? Thanks in advance, Tim

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• Problem with Bash output redirection

  - by Aman Jain

  I was trying to remove all the lines of a file except the last line but the following command did not work, although file.txt is not empty. $cat file.txt |tail -1 > file.txt $cat file.txt Why is it so?

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• Set the title of a UIButton with a single method invocation?

  - by Greg Maletic

  I'd like to set the title of a UIButton via code. I find myself having to call -[UIButton setTitle:forState:] for UIControlStateNormal, UIControlStateHighlighted, UIControlStateDisabled, UIControlStateSelected. And that doesn't even take into account all of the combinations of these states together. Needless to say, this is tiresome. Is there a single call I can make that will set one string as the title for all of the states? (Since, I assume that in 95% of the cases, that's the desired behavior?)

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• Get JS file via HTTPS from a HTTP page

  - by Mike

  Okay, so what are the ramifications of getting a JS file via an HTTPS call while on a HTTP page. I assume it would just be a little bit of extra overhead. Would there be any warnings about this call from any certain browser? Don't ask why. It's just hypothetical.

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• in python: can i pass class method as and a default argument to another class method

  - by alex

  i want to to pass class method as and a default argument to another class method, so that i can re-use the method as a @classmethod @classmethod class foo: def func1(self,x): do somthing; def func2(self, aFunc = self.func1): # make some a call to afunc afunc(4) this why when the method func2 is called within the class aFunc defaults to self.func1, but i can call this same function from outside of the class and pass it a different function at the input. i get NameError: name 'self' is not defined

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• variables in assembler

  - by stupid_idiot

  hi, i know this is kinda retarded but I just can't figure it out. I'm debugging this: xor eax,eax mov ah,[var1] mov al,[var2] call addition stop: jmp stop var1: db 5 var2: db 6 addition: add ah,al ret the numbers that I find on addresses var1 and var2 are 0x0E and 0x07. I know it's not segmented, but that ain't reason for it to do such escapades, because the addition call works just fine. Could you please explain to me where is my mistake?

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• struct and arguments

  - by jay

  I am trying to modularize a function that used to add values to multiple structures in one call. Now I want to do one value addition per call, but I am not sure how to make a less specific argument reference. func ( [?] *val ) { }

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• android java memory management

  - by mixm

  how are static method calls handled by the JVM? does it still allocate memory when a call is made? if yes, how does garbage collection treat this allocation after the method call?

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• hook_user not being called for 'login' operation

  - by Allain Lalonde

  I've read in the drupal documentation that hook_user should be invoked for the login operation. To test this I've added a call to drupal_set_message at the top of my modules hook implementation and the only message I'm receiving is a call with 'load' as the $op. I've confirmed that drupal_set_message can be called multiple times and it doesn't erase the previous message, so I'm confident that hook_user is only being invoked the one time. Any good reasons for why hook_user isn't being invoked with 'login' as an operation when I'm logging in?

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• Calling a function in an iframe from a parent in firefox

  - by wyatt

  I'm trying to call a function, test(), of an iframe from the parent document using the code subframe.test(); subframe refers correctly to the iframe, alert(subframe) returns [object HTMLIFrameElement], and the function runs in both IE7 and opera (9.23), but not firefox (3.0), chrome (3.0) or safari (3.03 beta windows). I assume these browsers support the functionality, so wondering if perhaps I'm using an incorrect call which IE and Opera support anyway, which wouldn't surprise me.

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• Why might the Large Object Heap grow rather than throw an exception?

  - by Unsliced

  In a previous question I asked possible programatic ways of maximising the largest block allocatable on the LOH. I'm still seeing the problems, but now I'm trying to get my head around why the LOH seems to grow and shrink in size, yet I'm still seeing OutOfMemoryExceptions that tally with what others have reported as being due to LOH fragmentation. Why might one call to, for example, StringBuilder.EnsureCapacity throw an OutOfMemoryException for me, but another call from somewhere else result in the LOH expanding in size (according to the performance counters, it is growing and shrinking)?

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• Creating a list in Python- something sneaky going on?

  - by GlenCrawford

  Apologies if this doesn't make any sense, I'm very new to Python! From testing in an interpreter, I can see that list() and [] both produce an empty list: >>> list() [] >>> [] [] From what I've learned so far, the only way to create an object is to call its constructor (__init__), but I don't see this happening when I just type []. So by executing [], is Python then mapping that to a call to list()?

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• Difference between arguments in setInterval calls

  - by Martin Janiczek

  What's the difference between these setInterval calls and which ones should be used? setInterval("myFunction()",1000) setInterval("myFunction",1000) setInterval(myFunction(),1000) setInterval(myFunction,1000) My guess is that JS uses eval() on the first two (strings) and calls the latter two directly. Also, I don't understand the difference between the calls with and without parentheses. The ones with parentheses call it directly and then periodically call its return value?

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• Need some help with constructor

  - by mousey

  you have a class A, where you set ctor to be private, so a client can't call "A a;" to create obj on stack. But someday another developer add a new ctor: "A(int)" and try to call "A a(1);" inside main(). So this will create a obj on stack. How do you prevent that?

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• How to add values dynamically to I18n?

  - by Dima Goltsman

  I have many ymls in my rails app, and i want to put some of them in other service, so that i can call this from multiple places. the response of this call will be a hash. {"en" : {"test" : {"text1" : "hi english"}, {"text2" : "mambo number %{num}"} }, "es" : {"test" : {"text1" : "hi espaniol"}, {"text2" : "mamboes numeros %{num}"} } } is there a way i can load that hash into I18n translations like I18n.add_translations(some_hash) so i can access them with I18n.t("test.text1") I18n.t("test.text2", :num => 5) how can i achieve it?

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• Shaders with pygtkglext

  - by qba

  Do someone know how to get glsl shaders work in gtk-opengl window? With glut all glCreateProgram etc. functions works, but when I tried to put the same gl code into pygtkglext window, its complaining about NullReference: OpenGL.error.NullFunctionError: Attempt to call an undefined function glCreateProgram, check for bool(glCreateProgram) before calling So then I from OpenGL.GL.ARB.shader_objects import *, but the result is similar: OpenGL.error.NullFunctionError: Attempt to call an undefined function glCreateProgramObjectARB, check for bool(glCreateProgramObjectARB) before calling Any idea will be useful.

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• why restoring database never finishes?

  - by LingAi

  Hi all, I have really wired problems here. I am using MS 2008 sql server at the moment. After I did a tail-log backup, the target database is automatically restoring and keeping on restoring. Does anyone know what's the problem? Thanks, Ling

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• Fibonacci Code Golf

  - by Claudiu

  Generate the Fibonacci sequence in the fewest amount of characters possible. Any language is OK, except for one that you define with one operator, f, which prints the Fibonacci numbers. Starting point: 25 characters in Haskell: f=0:1:zipWith(+)f(tail f)

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• why retain of delegate is wrong what are all alternatives...?

  - by jeeva

  Hi, I have one problem let assume A and B are 2 view controller from A user push to B view controller,In B user starts some download by creating object C(which is NSObject class) and sets B as delegate to C(assign),now user want go back to A then dealloc of B calls object releases, C delegate fails to give call back(crashes).I want to get call and allow user to move to other view controller thats way i am retain the delegate in C class but retain of delegate is wrong ... what are all solutions ... Thanks in Advance.

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• Understanding this matrix transposition function in Haskell

  - by dmindreader

  This matrix transposition function works, but I'm trying to understand its step by step execurtion and I don't get it. transpose:: [[a]]->[[a]] transpose ([]:_) = [] transpose x = (map head x) : transpose (map tail x) with transpose [[1,2,3],[4,5,6],[7,8,9]] it returns: [[1,4,7],[2,5,8],[3,6,9]] I don't get how the concatenation operator is working with map. It is concatenating each head of x in the same function call? How?

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• How can I write this as a JavaScript function?

  - by Haluk

  I have the following code snippet embedded into some of my divs so when those divs get clicked a certain radio button gets checked. onclick="document.g1.city[0].checked=true;" However I would like to convert the above call to a function call like below: onclick="checkRadioButton(city[0]);" And the function will be something like this function checkRadioButton(input){ document.g1.input.checked=true; } Is there a way I can accomplish this?

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• How to store a function pointer in C#

  - by Joshua

  Let's say I want to store a group of function pointers in a List<(*func), and then later call them, perhaps even with parameters... Like if I stored in a Dict<(*func), object[] params could I call the func with the parameters? How would I do this?

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