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  • Setting alias for DynDNS domain

    - by metalball
    Hey all, I've created DynDNS domain for testing my local sites, and i'm having trouble with pointing to root domain. From my registrar (GoDaddy) I've created a CNAME for www to point my example.dyndns.com so going to url www.example.com I'm reaching my site. But if I'm going to example.com I'm reaching to the IP of the A record. I can't set the IP for the A record to be my IP because I have dynamic IP, and it changes constatly, and I can't point the A record to domain, only IP. When trying to create CNAME record @ to point example.dyndns.com I'm getting error "A record of a different type exists for the hostname @, could not create CNAME" The only record using the '@' host are NS record, which I can't delete, and when tried to set another NS record with @ point to example.dyndns.com, I've lost connection to my site :) So what can I do to get example.com url reach my site? Thanx!

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  • What are the most common SQL anti-patterns?

    - by le dorfier
    All of us who work with relational databases have learned (or are learning) that SQL is different. Eliciting the desired results, and doing so efficiently, involves a tedious process partly characterized by learning unfamiliar paradigms, and finding out that some of our most familiar programming patterns don't work here. What are the most common antipatterns you've seen (or your self committed), whether generic or product-specific, whether in SQL statements directly, or in the ways applications build and apply them?

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  • Should websites live in /var/ or /usr/ according to recommended usage?

    - by nbolton
    According to a guide on the Linux directory structure, /usr/ is for application files, and /var/ is for files that change (I assume this means "files that belong to the applications"). Is this correct? If this is the case then I'm a little torn between using either. A website is an application (if it's dynamic, so to speak), but in other cases it is just a collection of files used by Apache. The default www dir lives in /var/www/, so should we follow suit by using /var/websites/ (or something similar), or choose /usr/websites/ since they could be applications? This is a very trivial question, but it's bugging me nonetheless. For our case, I'm leaning toward /usr/web or something like that, since our websites are all applications. Update: This is for our company websites; it's not a shared hosting server, so we don't need to worry about separating them in /home/ or anything like that.

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  • How to configure LAN IP Filter on Huawei E586 UMTS Modem

    - by Mose
    I need to prevent clients of an Huawei E586 UMTS to WiFi modem from downloading much data from specific servers eg. Windows update or OSX update. On the config page of the device there's an "LAN IP Filter" which seems pretty good but I can't figure out the right settings. The mask looks like this: The help pages states the following: My problem with this is, I want some wildcard for the local ip and port. In my opinion the help page can not be correct by "lan port: enter 80" because the source port is normally dynamic. I tried to set it up like stated there but as expected it doesn't work. As wildcards I tried * and "ALL" but nothing worked as it prevents me from saving settings with an "wrong value" error. Any suggestions? Thanks in advance!

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  • blocking url using firefox extension

    - by user272483
    how can i control access to webpages in firefox. i'm going to develope a new addon for this but colud you tell me what should i do? can firefox extension programming allows this. or should i develop a desktop application to control access. thx in advance.

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  • Video Game Bots?

    - by cam
    Something I've always wondered, especially since it inspired me to start programming when I was a kid, was how video game bots work? I'm sure there are a lot of different methods, but what about automation for MMORPGs? Or even FPS-type bots?

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  • Differnce between linux write and sendfile syscall

    - by JosiP
    Hi Im programming webserver (C), which should send big files. My question is: What are the main differneces in two syscalls: write and sendfile. Does sendfile depends on size of socket system buffer ? I noticed that write often writes less then i requested. For example, if got many requests for one file: should i open it, copy into memory and use 'write', or maybe i can do 'sendfile' for each client ? thx in advance for all answers

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  • NGINX + PHP FPM connect() failed (110: Connection timed out) while connecting to upstream

    - by Leonard Teo
    We're running a fairly large site using nginx and PHP-FPM and we're getting a lot of errors as the site load is quite high. We're getting "connect() failed (110: Connection timed out) while connecting to upstream"...upstream: "fastcgi://127.0.0.1:9000" Here's my config file for PHP-FPM. PHP-FPM: [www] listen = 127.0.0.1:9000 listen.allowed_clients = 127.0.0.1 user = nginx group = nginx pm = dynamic pm.max_children = 100 pm.start_servers = 20 pm.min_spare_servers = 5 pm.max_spare_servers = 35 pm.max_requests = 100 slowlog = /var/log/php-fpm/www-slow.log php_admin_value[error_log] = /var/log/php-fpm/www-error.log php_admin_flag[log_errors] = on What's the recommended config/number of servers/children for a high traffic site? We tried using Unix Sockets instead of TCP and got no noticeable improvements. Right now the errors are: connect() to unix:/var/run/php-fcgi.sock failed (11: Resource temporarily unavailable) while connecting to upstream...upstream: "fastcgi://unix:/var/run/php-fcgi.sock:"... Thanks, Leonard

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  • mysql remote connection [closed]

    - by Fel
    I spoke with my host supporter to find what is my sql hostname. He said that the only way is add permissions in mysql remote (cpanel) to my actual ip. So the config in heidiSQL for example will be localhost userxxx passxxx But i have a dynamic ip, so i need to change the permissions every time, correct? Add the flag % probably is not a good idea, so how can I solve this problem? Why I dont have something like mysql.something.com ? Sorry, if this question is too basic.

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  • How to use prettify with blogger/blogspot?

    - by billpg
    Hi everyone. I'm using blogger.com to host some texts on programming, and I'd like to use prettify (same as stackoverflow) to nicely colour the code samples. How do I install the prettify scripts into the blog domain? Would it be better (if indeed its possible) to link to a shared copy somewhere? I have webspace on a different domain. Would that help? Many thanks.

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  • Design Patters in Rails

    - by Winston
    I remember, I have a GoF book back in college about design patterns which helped me a lot with my C and C++ programming, since my jump ship to Rails I was trying to use those design patterns I learned previously, Rails is a relatively new paradigm to me, plurals, verbs, REST, DRY.. Can you give me a recommended book for Rails that I can easily understand what I previously learned back in College. P.S. I suspect Matz knew about the GoF book, and applied it on Ruby... :-)

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  • Succinct introduction to C++/CLI for C#/Haskell/F#/JS/C++/... programmer

    - by Henrik
    Hello everybody, I'm trying to write integrations with the operating system and with things like active directory and Ocropus. I know a bunch of programming languages, including those listed in the title. I'm trying to learn exactly how C++/CLI works, but can't find succinct, exact and accurate descriptions online from the searching that I have done. So I ask here. Could you tell me the pitfalls and features of C++/CLI? Assume I know all of C# and start from there. I'm not an expert in C++, so some of my questions' answers might be "just like C++", but could say that I am at C#. I would like to know things like: Converting C++ pointers to CLI pointers, Any differences in passing by value/doubly indirect pointers/CLI pointers from C#/C++ and what is 'recommended'. How do gcnew, __gc, __nogc work with Polymorphism Structs Inner classes Interfaces The "fixed" keyword; does that exist? Compiling DLLs loaded into the kernel with C++/CLI possible? Loaded as device drivers? Invoked by the kernel? What does this mean anyway (i.e. to load something into the kernel exactly; how do I know if it is?)? L"my string" versus "my string"? wchar_t? How many types of chars are there? Are we safe in treating chars as uint32s or what should one treat them as to guarantee language indifference in code? Finalizers (~ClassName() {}) are discouraged in C# because there are no garantuees they will run deterministically, but since in C++ I have to use "delete" or use copy-c'tors as to stack allocate memory, what are the recommendations between C#/C++ interactions? What are the pitfalls when using reflection in C++/CLI? How well does C++/CLI work with the IDisposable pattern and with SafeHandle, SafeHandleZeroOrMinusOneIsInvalid? I've read briefly about asynchronous exceptions when doing DMA-operations, what are these? Are there limitations you impose upon yourself when using C++ with CLI integration rather than just doing plain C++? Attributes in C++ similar to Attributes in C#? Can I use the full meta-programming patterns available in C++ through templates now and still have it compile like ordinary C++? Have you tried writing C++/CLI with boost? What are the optimal ways of interfacing the boost library with C++/CLI; can you give me an example of passing a lambda expression to an iterator/foldr function? What is the preferred way of exception handling? Can C++/CLI catch managed exceptions now? How well does dynamic IL generation work with C++/CLI? Does it run on Mono? Any other things I ought to know about?

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  • Succinct introduction to C++/CLI for C#/Haskell/F#/JS/C++/... programmer

    - by Henrik
    Hello everybody, I'm trying to write integrations with the operating system and with things like active directory and Ocropus. I know a bunch of programming languages, including those listed in the title. I'm trying to learn exactly how C++/CLI works, but can't find succinct, exact and accurate descriptions online from the searching that I have done. So I ask here. Could you tell me the pitfalls and features of C++/CLI? Assume I know all of C# and start from there. I'm not an expert in C++, so some of my questions' answers might be "just like C++", but could say that I am at C#. I would like to know things like: Converting C++ pointers to CLI pointers, Any differences in passing by value/doubly indirect pointers/CLI pointers from C#/C++ and what is 'recommended'. How do gcnew, __gc, __nogc work with Polymorphism Structs Inner classes Interfaces The "fixed" keyword; does that exist? Compiling DLLs loaded into the kernel with C++/CLI possible? Loaded as device drivers? Invoked by the kernel? What does this mean anyway (i.e. to load something into the kernel exactly; how do I know if it is?)? L"my string" versus "my string"? wchar_t? How many types of chars are there? Are we safe in treating chars as uint32s or what should one treat them as to guarantee language indifference in code? Finalizers (~ClassName() {}) are discouraged in C# because there are no garantuees they will run deterministically, but since in C++ I have to use "delete" or use copy-c'tors as to stack allocate memory, what are the recommendations between C#/C++ interactions? What are the pitfalls when using reflection in C++/CLI? How well does C++/CLI work with the IDisposable pattern and with SafeHandle, SafeHandleZeroOrMinusOneIsInvalid? I've read briefly about asynchronous exceptions when doing DMA-operations, what are these? Are there limitations you impose upon yourself when using C++ with CLI integration rather than just doing plain C++? Attributes in C++ similar to Attributes in C#? Can I use the full meta-programming patterns available in C++ through templates now and still have it compile like ordinary C++? Have you tried writing C++/CLI with boost? What are the optimal ways of interfacing the boost library with C++/CLI; can you give me an example of passing a lambda expression to an iterator/foldr function? What is the preferred way of exception handling? Can C++/CLI catch managed exceptions now? How well does dynamic IL generation work with C++/CLI? Does it run on Mono? Any other things I ought to know about?

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  • uWSGI and Nginx python file handling

    - by user133507
    I've been trying to figure out how to propertly utilize uWSGI with Nginx and have hit a bit of a design roadblock. I'm trying to figure out how my python files should be accessed via uWSGI. I've been able to find 3 different ways to do so: Create a uWSGI process for each python file and then create locations in nginx that pass to each uWSGI process. Create one instance of uWSGI and create a master python file that handles all the different requests. Create one instance of uWSGI and setup dynamic applications I'm coming from LightTPD where I simply setup rewrites to point at the different python files. I feel like 3 is the closest to that but uWSGI says that it is not the recommended way of going about it.

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  • Column variables in Excel?

    - by Ryan
    Let's say I have column A and Column B. Cells in Column A contain either "Y" or "N". How can I set the value of the cell in the corresponding row in Column B with a formula that detects if the cell's value = "N"? Not new to programming logic but to Excel formulas, thanks for your help. -Ryan

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  • wmi not available for some time after reboot

    - by Alex Okrushko
    I'm having the problem with the WMI availability on logon. Right after reboot I open cmd and with python interpreter: >>> import wmi >>> c = wmi.WMI() >>> c.Win32_OperatingSystem() Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Python27\lib\site-packages\wmi.py", line 1147, in __getattr__ return getattr (self._namespace, attribute) File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 516, in __getattr__ raise AttributeError("%s.%s" % (self._username_, attr)) AttributeError: winmgmts:.Win32_OperatingSystem >>> 5 minutes later I open another cmd and python interpreter: Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win 32 Type "help", "copyright", "credits" or "license" for more information. >>> import wmi >>> c = wmi.WMI() >>> c.Win32_OperatingSystem() [<_wmi_object: \\W520-ALEX-WIN7\root\cimv2:Win32_OperatingSystem=@>] >>> NOTE: the first cmd still keeps saying AttributeError even 5 minutes later. NOTE 2: if I logout and login wmi is available, so it is somehow effected by reboot with process explorer I check the environmental variables and they are the same for both cmds What could that be? Please help. UPDATE: Apparently the problem is connecting to the wbem services: >>> import win32com.client >>> win32com.client.Dispatch('WbemScripting.SWbemLocator') <COMObject WbemScripting.SWbemLocator> >>> wmi_service= win32com.client.Dispatch('WbemScripting.SWbemLocator') >>> wbem_service = wmi_service.ConnectServer('.','root/cimv2') >>> wbem_service <COMObject <unknown>> >>> items = wbem_service.ExecQuery('Select * from Win32_OperatingSystem') Traceback (most recent call last): File "<stdin>", line 1, in <module> File "<COMObject <unknown>>", line 3, in ExecQuery File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 282, in _ApplyTypes_ result = self._oleobj_.InvokeTypes(*(dispid, LCID, wFlags, retType, argTypes ) + args) pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, u'SWbemServicesEx ', u'Generic failure ', None, 0, -2147217407), None) >>> NOTE 3: wmic os always worked. NOTE 4: re-installing pywin32 package didn't help. Neither did Re-registering/re-compiling the WMI components and resetting of the WMI database (as recommended here) NOTE 5: my 4 Other laptops don't have this problem. Also wmiprov.log has: (Mon Oct 29 11:40:07 2012.248587) : *************************************** (Mon Oct 29 11:40:07 2012.248587) : Could not get pointer to binary resource for file: (Mon Oct 29 11:40:07 2012.248587) : C:\Windows\system32\drivers\ndis.sys[MofResourceName](Mon Oct 29 11:40:07 2012.248587) : (Mon Oct 29 11:40:07 2012.248587) : *************************************** (Mon Oct 29 11:40:07 2012.248587) : *************************************** (Mon Oct 29 11:40:07 2012.248587) : Could not get pointer to binary resource for file: (Mon Oct 29 11:40:07 2012.248587) : C:\Windows\system32\drivers\en-US\ndis.sys.mui[MofResourceName](Mon Oct 29 11:40:07 2012.248587) : (Mon Oct 29 11:40:07 2012.248587) : *************************************** (Mon Oct 29 11:40:07 2012.248603) : *************************************** (Mon Oct 29 11:40:07 2012.248603) : Could not get pointer to binary resource for file: (Mon Oct 29 11:40:07 2012.248603) : C:\Windows\system32\DRIVERS\wmiacpi.sys[MofResource](Mon Oct 29 11:40:07 2012.248603) : (Mon Oct 29 11:40:07 2012.248603) : *************************************** (Mon Oct 29 11:40:07 2012.248603) : *************************************** (Mon Oct 29 11:40:07 2012.248603) : Could not get pointer to binary resource for file: (Mon Oct 29 11:40:07 2012.248603) : C:\Windows\system32\DRIVERS\monitor.sys[MonitorWMI](Mon Oct 29 11:40:07 2012.248603) : (Mon Oct 29 11:40:07 2012.248603) : *************************************** NOTE 6: the WMIDiag tool report is at my dropbox

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  • How to reuse layouts in WPF

    - by Ingó Vals
    I'm trying to create a application that will be tabbed where each tab will have a button area and a view area. Now each tab will essentially have the same layout just different things in the layout and I wanted to be able to reuse the same layout so that I won't have to change at many places ( it's just not good programming ). Can I accomplish this using resources or perhaps Styles. Please supply a light code example if possible.

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  • What parts of this book are outdated? "Design of the UNIX Operating System" by Maurice Bach, 1986

    - by blee
    I learned programming on the job via high-level languages. I'm trying to gain a better understanding of the lower-level workings of computing and picked up "Design of the UNIX Operating System" by Maurice Bach. What do I need to know in terms of which topics in this book may not be relevant to understanding Linux nuts and bolts? Is there a newer book or Linux-specific book that I should read instead? I really like the clarity of this particular book, though.

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  • Flash in Python

    - by iamgopal
    I was exploring possibilities of Rich Internet applications using Python. The most awesome possibility I found was of programming in IronPython and running it as a Silverlight. Is there something similar available for Adobe AIR? I.e. programing in Python and run in Adobe AIR (Flash, that is).

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  • in flashbuilder (flex 4) select enclosing element

    - by core07
    Seems Adobe ignores strong movement now towards the productive programming. E.g. flash builder ide lacks keyboard shortcuts that are very useful in eclipse. If code templates, extract method, extract local variables are covered by some not-free plugins (and not cheap) like source mate, expanding selection to enclosing element I cannot find how to enable. Maybe you guys know some plugins doing that? Usually in eclipse it is Alt Shift Up to select enclosing block.

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