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  • using Awk inside Perl script

    - by papoyan
    My first question in stackoverflow! I'm having trouble using the following code inside my perl script, any advise is really appreciated, how to correct the syntax? # If I execute in bash, it's working just fine bash$ whois google.com | egrep "\w+([._-]\w)*@\w+([._-]\w)*\.\w{2,4}" |awk ' {for (i=1;i<=NF;i++) {if ( $i ~ /[[:alpha:]]@[[:alpha:]]/ ) { print $i}}}'|head -n1 [email protected] #----------------------------------- #but this doesn't work bash$ ./email.pl google.com awk: {for (i=1;i<=NF;i++) {if ( ~ /[[:alpha:]]@[[:alpha:]]/ ) { print }}} awk: ^ syntax error # Here is my script bash$ cat email.pl ####\#!/usr/bin/perl $input = lc shift @ARGV; $host = $input; my $email = `whois $host | egrep "\w+([._-]\w)*@\w+([._-]\w)*\.\w{2,4}" |awk ' {for (i=1;i<=NF;i++) {if ( $i ~ /[[:alpha:]]@[[:alpha:]]/ ) { print $i}}}'|head -1`; print my $email; bash$ Thank you in advance !

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  • Cython Speed Boost vs. Usability

    - by zubin71
    I just came across Cython, while I was looking out for ways to optimize Python code. I read various posts on stackoverflow, the python wiki and read the article "General Rules for Optimization". Cython is something which grasps my interest the most; instead of writing C-code for yourself, you can choose to have other datatypes in your python code itself. Here is a silly test i tried, #!/usr/bin/python # test.pyx def test(value): for i in xrange(value): i**2 if(i==1000000): print i test(10000001) $ time python test.pyx real 0m16.774s user 0m16.745s sys 0m0.024s $ time cython test.pyx real 0m0.513s user 0m0.196s sys 0m0.052s Now, honestly, i`m dumbfounded. The code which I have used here is pure python code, and all I have changed is the interpreter. In this case, if cython is this good, then why do people still use the traditional Python interpretor? Are there any reliability issues for Cython?

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  • Strong name validation failed on VB.NET Assembly

    - by Matt Baker
    I have a VB.Net 1.1 application works just fine after compiling in Visual Studio. However, I want to use ILMerge to combine all the referenced assemblies into a single executable just to make it easier to move around. After I send it through ILMerge and try to run it I get the error "Strong name validation failed for .exe" ..... But none of my stuff is strong named! I saw this post here: http://stackoverflow.com/questions/403731/strong-name-validation-failed and tried running it through 'sn.exe -Vr .exe' but that gives me this error: ".exe does not represent a strongly named assembly" Has anyone else had this problem before? How do I fix it?

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  • Absolute path of a file object

    - by Morgoth
    This has been discussed on StackOverflow before - I am trying to find a good way to find the absolute path of a file object, but I need it to be robust to os.chdir(), so cannot use f = file('test') os.path.abspath(f.name) Instead, I was wondering whether the following is a good solution - basically extending the file class so that on opening, the absolute path of the file is saved: class File(file): def __init__(self, filename, *args, **kwargs): self.abspath = os.path.abspath(filename) file.__init__(self, filename, *args, **kwargs) Then one can do f = File('test','rb') os.chdir('some_directory') f.abspath # absolute path can be accessed like this Are there any risks with doing this?

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  • How to generate all variations with repetitions of a string?

    - by Svenstaro
    I want to generate all variations with repetitions of a string in C++ and I'd highly prefer a non-recursive algorithm. I've come up with a recursive algorithm in the past but due to the complexity (r^n) I'd like to see an iterative approach. I'm quite surprised that I wasn't able to find a solution to this problem anywhere on the web or on StackOverflow. I've come up with a Python script that does what I want as well: import itertools variations = itertools.product('ab', repeat=4) for variations in variations: variation_string = "" for letter in variations: variation_string += letter print variation_string Output: aaaa aaab aaba aabb abaa abab abba abbb baaa baab baba babb bbaa bbab bbba bbbb Ideally I'd like a C++ program that can produce the exact output, taking the exact same parameters. This is for learning purposes, it isn't homework. I wish my homework was like that.

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  • Eclipse Search Only Specific Folders

    - by Craig
    Hello, I already saw the answers for a question almost identical to this: http://stackoverflow.com/questions/443169/eclipse-exclude-folders-from-search. However I am looking for a resolution that would allow me to say look at 10 of my 200 folders and those 10 change all the time. Is there a way I can search through just 1 folder and avoid any other folders that are not inside it? I don't want to create a different project as I am using SVN and I have had cases with mxml files and other files that adding a file that we moved from one project to another caused problems for other developers.

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  • How does Alpha Five Version 10 Rate for Web App Development

    - by Gary B2312321321
    I came across this RDMS via the advert on stackoverflow. Seems to be in the vein of MS Access / Filemaker / Apex database development tools but focused on web based applications. It quotes rave reviews from EWeek and a favourable mention from Dr Dobbs regarding its ability to create AJAX web applications without coding. The Eweek review, apparently written by an ASP.NET programmer, goes on to proclaim the ease at which apps can be extended using the inbuilt XBasic language and how custom javascript can easily be added without wading through code. Has anyone here built a web app with Alpha 5? Does anyone have comments on the development process, the speed of it or limitations they encountered along the way? To me it seems Oracle APEX comes closest to the feature set, has anyone programmed in both and have any comments?

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  • WPF Editable Combobox IsFocused problem

    - by Rey
    I am developing a Watermarked Combobox by modifying Combobox Control template. everything is fine when combo box is not in editable mode. but when i change edit mode to True, isFocused property never set to True. this is because in edit mode, combo box is using a Text Box. This is exact copy of this StackOverflow question: . there are no responces to that question. please drop a line if you know how to solve this. or please point me to links that provide Watermark Combobox implementation. Thanks, Rey.

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  • Resuming File Downloads in Ruby on Rails

    - by jaycode
    Hi, this has been asked here: http://stackoverflow.com/questions/1840413/resuming-file-downloads-in-ruby-on-rails-range-header-support But there was no answer. I am having similar problem, could anybody help, please? Thanks before. Alright I am getting close. Seems like I need to setup header Content-Length or Content-Range, as described here: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13. Haven't got an idea how. Anybody knows? Jay response.header["Content-Range"] = "20000-#{size}" send_file "#{Dir.pwd}/products/filename.zip", :type => 'application/zip', :size => (size - 20000) doesn't work

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  • Prefilling large volumes of body text in GMAIL compose getting a Request URI too long error

    - by Ali
    Hi guys this is a followup from the question: http://stackoverflow.com/questions/2583928/prefilling-gmail-compose-screen-with-html-text Where I was building a google apps application - I can call a gmail compose message page from my application using the url: https://mail.google.com/a/domain/?view=cm&fs=1&tf=1&source=mailto&to=WHOEVER%40COMPANY.COM&su=SUBJECTHERE&cc=WHOEVER%40COMPANY.COM&bcc=WHOEVER%40COMPANY.COM&body=PREPOPULATEDBODY However when I try to pass in the body parameter a very long line of text eg as a reply message body I get this error from GMAIL stating the REQUEST URI is too long. Is there a better way to do this as in a way to fillin the text body box of gmail compose section. Or some way to open the page and have it prefilled with javascript some how...

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  • How to set classpath in manifest file , while creating JAR from eclipse?

    - by Hippo
    I am trying to creat JAR file through eclipse. I read some of the threads from stackoverflow as well as other forums. But nothing is helping. I have created a separate manifest file like this one. `Manifest-Version: 1.0 Main-Class: Main Class-Path: gnujaxp.jar iText-2.1.5.jar jcalendar.jar jcommon-1.0.16.jar jfreechart-1.0.13.jar jfreechart-1.0.13-experimental.jar jfreechart-1.0.13-swt.jar junit.jar servlet.jar swtgraphics2d.jar tinyos.jar ` I have put all this jars in same project folder. While exporting i am exporting all resources (meants this jar files also.) But still i am getting noclassdeffound error when my application tries to load any one of the jar included. M i wrong anywhere .. Thanks in advance.

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  • Is the Silverstripe CMS as easy to deploy, maintain, and develop on as it appears?

    - by Thomas Owens
    Although I haven't thought about deploying it on my own site, someone I know sent me a link to a CMS called SilverStripe that I've never heard of before. I read their site, looked at and played around with their demo, and so on. It looks like it's a CMS backed by a custom PHP framework that they call Sapphire. And from what I can gather on their website and using their demo, it potentially might be as good and easy as they say (once you get past any learning curve, which appears to be small, considering it looks a lot like other PHP frameworks and CMSes). Has anyone here ever deployed, maintained, or developed a CMS using SilverStripe? If so, could you shed some light on it, from a developer's point-of-view? I also found this earlier question about SilverStripe here on StackOverflow, but I'm more interested from a development point of view than a user or administrator point of view.

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  • The speed of .NET in numerical computing

    - by Yin Zhu
    In my experience, .net is 2 to 3 times slower than native code. (I implemented L-BFGS for multivariate optimization). I have traced the ads on stackoverflow to http://www.centerspace.net/products/ the speed is really amazing, the speed is close to native code. How can they do that? They said that: Q. Is NMath "pure" .NET? A. The answer depends somewhat on your definition of "pure .NET". NMath is written in C#, plus a small Managed C++ layer. For better performance of basic linear algebra operations, however, NMath does rely on the native Intel Math Kernel Library (included with NMath). But there are no COM components, no DLLs--just .NET assemblies. Also, all memory allocated in the Managed C++ layer and used by native code is allocated from the managed heap. Can someone explain more to me? Thanks!

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  • Get user-inputed file name from JFileChooser Save dialog box

    - by Anya
    This answer to this question may seem obvious, but I'm actually struggling with it quite a bit. I've searched through JFileChooser methods in the API, and I've looked at some of the questions already asked and answered here on stackoverflow. My question is this. In my program, I am to allow the user to type in a file name which I will then use to create a brand new file that I will write on. How do you get the text the user has entered in the textfield next to the label "Save As:" on the Save dialog box provided by JFileChooser? Is there a JFileChooser method that would allow me to get that user-inputed text? Or would I have to go through another class, or do something else to get that text? Thank you so much, to anyone who answers. It's very late for me now, and this program is due in a few hours (meaning I'll be having another sleepless night). Desperate may be too strong a word, but I'm something close enough.

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  • OOP Design Question - Where/When do you Validate properties?

    - by JW
    I have read a few books on OOP DDD/PoEAA/Gang of Four and none of them seem to cover the topic of validation - it seems to be always assumed that data is valid. I gather from the answers to this post (http://stackoverflow.com/questions/1651964/oop-design-question-validating-properties) that a client should only attempt to set a valid property value on a domain object. This person has asked a similar question that remains unanswered: http://bytes.com/topic/php/answers/789086-php-oop-setters-getters-data-validation#post3136182 So how do you ensure it is valid? Do you have a 'validator method' alongside every getter and setter? isValidName() setName() getName() I seem to be missing some key basic knowledge about OOP data validation - can you point me to a book that covers this topic in detail? - ie. covering different types of validation / invariants/ handling feedback / to use Exceptions or not etc

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  • The .NET ActiveX component with WPF content can't be loaded by non MFC app

    - by lonelyflyer
    I have a legacy delphi program and want to add some content implemented with WPF. So I encapsulate the WPF control with a .NET/ActiveX interop technology. That means something like: [ComRegisterFunction()] public static void RegisterClass(string key); [ComUnregisterFunction()] public static void UnregisterClass(string key); The activeX component is a WinForms User Control and the WPF materials are attached to an ElemenHost in this User Control. It works fine if the host app of this ActiveX is a MFC program even without /clr switch. But my legacy app is a delphi program, and it always throw a stackoverflow exception within the constructor of my WPF user control as the program be started. I have no clue, Google is no help. and it has puzzled me for days.

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  • How to convert a PCRE to a POSIX RE?

    - by David M
    This interesting question http://stackoverflow.com/questions/2837267/ concerned how to do a negative look-ahead in MySQL. The poster wanted to get the effect of Kansas(?! State) because MySQL doesn't implement look-ahead assertions, a number of answers came up the equivalent Kansas($|[^ ]| ($|[^S])| S($|[^t])| St($|[^a])| Sta($|[^t])| Stat($|[^e])) The poster pointed out that's a PITA to do for potentially lots of expressions. Is there a script/utility/mode of PCRE (or some other package) that will convert a PCRE (if possible) to an equivalent regex that doesn't use Perl's snazzy features? I'm fully aware that some Perl-style regexes cannot be stated as an ordinary regex, so I would not expect the tool to do the impossible, of course!

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  • How can I extract URLs from plain text with Perl?

    - by Russell C.
    I need the Perl regex to parse plain text input and convert all links to valid HTML HREF links. I've tried 10 different versions I found on the web but none of them seen to work correctly. I also tested other solutions posted on StackOverflow, none of which seem to work. The correct solution should be able to find any URL in the plain text input and convert it to: <a href="$1">$1</a> Some cases other regular expressions I tried didn't handle correctly include: URLs at the end of a line which are followed by returns URLs that included question marks URLs that start with 'https' I'm hoping that another Perl guy out there will already have a regular expression they are using for this that they can share. Thanks in advance for your help!

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  • Not see my view helper

    - by Alexandr
    I create my view helper it located in /library/My/View/helpers/SpecialPurpose.php the class name is My_View_Helper_SpecialPurpose it have public function specialPurpose() it return some HTML i register this path in bootstrap.php $view = Zend_Layout::getMvcInstance()-getView(); $view-addBasePath('/my/view/helpers',"My_View_Helper"); when i tring specialPurpose();? in any view .phtml it trow exeption Message: Plugin by name 'SpecialPurpose' was not found in the registry; used paths: My_View_Helper_Helper_: /my/view/helpers\helpers/ Zend_View_Helper_: Zend/View/Helper/;D:/WWW/zends/application/modules/default/views\helpers/ P.S I read many post in stackoverflow but not one solutions not helped If it possible weácan how do this task with bootstrap and application.ini zf version 1.10.3

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  • How can I throttle user login attempts in PHP

    - by jasondavis
    I was just reading this post http://stackoverflow.com/questions/549/the-definitive-guide-to-website-authentication-beta#477585 on Preventing Rapid-Fire Login Attempts. Best practice #1: A short time delay that increases with the number of failed attempts, like: 1 failed attempt = no delay 2 failed attempts = 2 sec delay 3 failed attempts = 4 sec delay 4 failed attempts = 8 sec delay 5 failed attempts = 16 sec delay etc. DoS attacking this scheme would be very impractical, but on the other hand, potentially devastating, since the delay increases exponentially. I am curious how I could implement something like this for my login system in PHP?

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  • Any Java library for address extraction from emails?

    - by Hans Klock
    I'm looking for an Java open-source library which is able to extract address information from a (German) email (signature). The library should find name street city, city code/postal code email tel/fax address-parser.com is an commercial product, but a free (albeit simple) library would be great. stackoverflow.com/questions/16413/parse-usable-street-address-city-state-zip-from-a-string is asking for something similar, but my problem is broader because the address information is hidden in a complete email. And there isn't a solution either... Any ideas?

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  • Can't get to Pex download (or visual studio 2010)

    - by Vaccano
    I know this is probably not a "True" stackoverflow question, but here it is anyway: Is anyone able to get to the MSDN Download of Visual Studio 2010? I just get "Your search did not match any products." when I click on the New Downloads-Visual Studio 2010 link. I was able to download Visual Studio on Monday. But it is gone now. That is not really my issue though. That page is also where the pex download is. With that page down I can't download pex either. (I checked with a co-worker (who is having the same issue) before posting. So I know it is not just me.)

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  • NSFetchedResultsControllerDelegate in a second view controller (not firing?)

    - by MTBPatriot
    I am running into an issue similar to the one described here: http://stackoverflow.com/questions/1319940/nsfetchedresultscontrollerdelegate-not-firing (the delegate for my NSFetchedResultsControllerDelegate are not being called on my second view controller) I can't seem to get the proposed solutions to work. I have a main view that loads information from Core Data just fine, but when it pushes a separate controller (and passes the managed object to it), the delegate methods won't fire. I've read about 'mergeChangesFromContextDidSaveNotification' but I don't understand how to synchronize the two manage objects and/or get the delegate methods to be called. Any help would be greatly appreciated. Thank you, Mike

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  • Determine file creation date in Java

    - by Todd
    Hello, There is another similar question to mine on StackOverflow (How to get creation date of a file in Java), but the answer isn't really there as the OP had a different need that could be solved via other mechanisms. I am trying to create a list of the files in a directory that can be sorted by age, hence the need for the file creation date. I haven't located any good way to do this after much trawling of the web. Is there a mechanism for getting file creation dates? Thanks, Todd BTW, currently on a Windows system, may need this to work on a Linux system as well. Also, I can't guarantee that a file naming convention would be followed where the creation date/time is embedded in the name.

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  • Cron job for list of urls

    - by mathew
    Duplicate http://stackoverflow.com/questions/2968918/how-do-i-do-cron-job-for-list-of-urls-closed sorry for the confusion... Ho do I do cron job using a list of urls?? actually the search path is mention below www.mydomain.com/search?url=www.google.com after google.com another url which is in the urllist.txt should be the next. so at the end of the day the whole list of urls in urllist.txt will be completed and saved in my database. what I need is how do I array urls in search path from urllist.txt.....and put it in cron job rest I can handle Thanks Mathew

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