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  • static NSStrings in Objective-C

    - by MikeyWard
    I frequently see a code snippet like this in class instance methods: static NSString *myString = @"This is a string."; I can't seem to figure out why this works. Is this simply the objc equivalent of a #define that's limited to the method's scope? I (think) I understand the static nature of the variable, but more specifically about NSStrings, why isn't it being alloc'd, init'd? Thanks~

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  • VC++ Debugger expression

    - by user85917
    In debug | Immediate window, why do i get this error: szTemp is a local variable at {,,Util.dll}MySock.Write("%s",szTemp) CXX0017: Error: symbol "szTemp" not found int SomeFunction( ..) { char* szSQL = new char[1024]; . . ---> Breakpoint.. Trying to run the expression here.. . . }

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  • Is this technically thread safe despite being mutable?

    - by Finbarr
    Yes, the private member variable bar should be final right? But actually, in this instance, it is an atomic operation to simply read the value of an int. So is this technically thread safe? class foo { private int bar; public foo(int bar) { this.bar = bar; } public int getBar() { return bar; } } // assume infinite number of threads repeatedly calling getBar on the same instance of foo.

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  • How to enable a Web portal-based enterprise platform on different domains and hosts without customization

    - by S.Jalali
    I work at Coscend, a cloud and communications software product company. We have built a Web portal-based collaboration platform that we would like to host on five different Windows- and Linux-based servers in different hosting environments that run Web servers. Each of these Windows and Linux servers have a different host name and domain name (and IP address). Out team would appreciate your guidance on: (1) Is there a way to implement this Web portal-based platform on these Linux servers without customizing the host name, domain name and IP address for each individual instance? (2) Is there a way to create some variables using JavaScript for host name and domain name and call them from the different implementations? (3) Can these JavaScript modules be made portable and re-usable object modules for different environments and instances? The portal is written in JavaScript that is embedded in HTML5 and padded with CSS3. Other technologies include Flash, Flex. Databases used are PostgreSQL and MySQL.

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  • selenium, get text from id

    - by user3766148
    on the following url - http://www.filestube.to/26frq-Buffalo-Clover-Test-Your-Love-2014-9Jai9TJFukAS9fq9sWngAD.html I am trying to copy the; Direct links: turbobit.net/9mrb0eu9eksx/26frq.Buffalo.Clover..Test.Your.Love.2014.rar.html via css path or xpath and unable to retrieve the information and store it to a variable. firebug gives me html body div.cnt div.rH.no-js.fd div.rl div.fgBx pre span#copy_paste_links but when I apply css=html.body.div.cnt.div.rH.no-js.fd.div.rl.div.fgBx.pre.span#copy_paste_links/text() to the target, I get error not found http://i.imgur.com/KdBmDHE.png

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  • tomcat startup.sh trouble finding JAVA_HOME

    - by peter
    I am a bit puzzled by this strange behavior on CentOs 5.4 when starting Tomcat 6.0 as a service I've added a script at /etc/init.d/tomcat that can start/stop/restart Apache Tomcat 6.0 with user 'tomcat', and registered it as service. The problem with the service is that I am getting a 'Neither the JAVA_HOME nor the JRE_HOME environment variable is defined'. But when type 'sudo -u tomcat echo $JAVA_HOME' I get '/usr/java/jdk1.5.0_22' which is correct since I am using that JDK. What can I do about this?

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  • Passing data to overridden base method in C#

    - by UpTheCreek
    Bit of a dumb question, but I'm wondering what the accepted way of passing data from back to an overridden base method is in c#. e.g. I guess I could do: class A { int x; public virtual void DoStuff() { Console.WriteLine(x); } } class B : A { public override void DoStuff() { x = 1; base.DoStuff(); } } But is there a better method that for example doesn't require the use of a member variable?

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  • apache mod_rewrite making permanent url problem

    - by Yc Zhang
    In file .htaccess <IfModule mod_rewrite.c> RewriteEngine on RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^\/*get_post\/(.*)$ get_post.php?slug=$0 [L] </IfModule> If I type http://example.com/get_post/abcde, I get an empty array of $_GET variable. How can I achieve the effect like this: http://example.com/get_post?slug=abcde

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  • Drupal print module: controlling layout in PDF files?

    - by WhyKiki
    So I'm trying to fix the layout of the PDF files for a specific content type. I'm messing around in the tpl.php file and can't find a way to modify individual fields. There's just the massive $print['content'] variable that contains all of the page content. So, is there a way to access each field?

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  • Merging Two Matrixes... in LISP

    - by abidikgubidik
    (defun merge-matrix (matrix-1 matrix-2) (if (not (or (eql (matrix-rows matrix-1) (matrix-rows matrix-2)) (null matrix-1) (null matrix-2))) (error "Invalid dimensions.")) (cond ((null matrix-1) (copy-tree matrix-2)) ((null matrix-2) (copy-tree matrix-1)) (t (let ((result (copy-tree matrix-1))) (dotimes (i (matrix-rows matrix-1)) (setf (nth i result) (nconc (nth i result) (nth i matrix-2)))) result)))) (merge-matrix '((3 1) (1 3)) '((4 2) (1 1))) * - EVAL: variable NULL has no value I receive an error like that how I can fix the problem, thanks

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  • Can I Call a Child Page From a Master Page?

    - by MemphisDeveloper
    My problem is this I have a base page that creates content dynamically. There are buttons on my Master Page that fire events that my base page needs to know about. But the OnLoad function on my base page fires before my Button_Command function on my master page. So I either need to figure out a way to load my base page after the Button_Command function has had the chance to set a variable or I must call a function in my base page from the Button_Command function.

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  • C# underlying types of enums

    - by Marlon
    What is the point of having enum SomeEnum : byte // <---- { SomeValue = 0x01, ... } when you have to make a cast just to assign it to the same type of variable as the enums underlying type? byte b = (byte)SomeEnum.SomeValue;

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  • Random Number Generator

    - by skinni
    - (IBAction)randomnum{ int randomNumber1 = 1+ arc4random() %(49); label1.text = [NSString stringWithFormat:@"d", randomNumber]; Local declaration of randomNumber hides instance variable. How can i get round this warning? thanks

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  • How can I get model names from inside my app?

    - by Cameron
    I have a bunch of models in a sub-directory that inherit from a model in the models root directory. I want to be able to set a class variable in another model that lists each inherited model class. i.e @@groups = sub_models.map do { |model| model.class.to_s } Not sure how to get at this info though...

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  • Can I rent exclusive time on a powerful server running linux? [closed]

    - by Mark Borgerding
    My company is involved in a proposal that requires speed estimates of our software on a server with the latest & greatest processors. This is not the first time we've been in this situation. The servers themselves are too expensive to buy a new one every time, so we end up extrapolating from what we have. There are so many variables: processor generation & speed, memory speed, memory channels, cache configurations; it makes extrapolation difficult and error-prone. Is there a business that rents time on the newest servers? At least part of the time we'd need exclusive access to an otherwise quiescent system either via ssh shell access or unattended batch jobs. I am not looking for general cloud computing services. I don't need much time on the server, but it needs to be exclusive. And the server needs to be pretty cutting edge for a solid basis of estimate.

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  • How should I lay-out my PHP login class?

    - by ThinkingInBits
    So, there is going to be one login form; however 1 of 3 types of members will be signing in member_type_a, member_type_b, member_type_c all of whom have some of the same properties, and some whom may have specific methods and/or properties to them. I want the class to be saved to a session variable for use with member area pages. Any suggestions on applicable design patterns?

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  • Why are member constants available even if there are no instances of a its class?

    - by flockofcode
    1) Why are member constants available even if there are no instances of a its class? 2) Is the only reason why constant expressions need to be fully evaluated at compile time due to compiler replacing constant variable with literal value? 3) Since string is also an object, I would think the following would produce an error, but it doesn’t. Why? class A { const string b = “it works”; } thank you

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