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  • Perl throws an error message about syntax

    - by Ben Dauphinee
    So, building off a question about string matching (this thread), I am working on implementing that info in solution 3 into a working solution to the problem I am working on. However, I am getting errors, specifically about this line of the below function: next if @$args->{search_in} !~ /@$cur[1]/; syntax error at ./db_index.pl line 16, near "next " My question as a perl newbie is what am I doing wrong here? sub search_for_key { my ($args) = @_; foreach $row(@{$args->{search_ary}}){ print "@$row[0] : @$row[1]\n"; } my $thiskey = NULL; foreach $cur (@{$args->{search_ary}}){ print "\n" . @$cur[1] . "\n" next if @$args->{search_in} !~ /@$cur[1]/; $thiskey = @$cur[0]; last; } return $thiskey; }

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  • Custom login in Django

    - by alpgs
    Django newbie here. I wrote simplified login form which takes email and password. It works great if both email and password are supplied, but if either is missing i get KeyError exception. According to django documentation this should never happen: By default, each Field class assumes the value is required, so if you pass an empty value -- either None or the empty string ("") -- then clean() will raise a ValidationError exception I tried to write my own validators for fields (clean_email and clean_password), but it doesn't work (ie I get KeyError exception). What am I doing wrong? class LoginForm(forms.Form): email = forms.EmailField(label=_(u'Your email')) password = forms.CharField(widget=forms.PasswordInput, label=_(u'Password')) def clean_email(self): data = self.cleaned_data['email'] if not data: raise forms.ValidationError(_("Please enter email")) return data def clean_password(self): data = self.cleaned_data['password'] if not data: raise forms.ValidationError(_("Please enter your password")) return data def clean(self): try: username = User.objects.get(email__iexact=self.cleaned_data['email']).username except User.DoesNotExist: raise forms.ValidationError(_("No such email registered")) password = self.cleaned_data['password'] self.user = auth.authenticate(username=username, password=password) if self.user is None or not self.user.is_active: raise forms.ValidationError(_("Email or password is incorrect")) return self.cleaned_data

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  • Linking to external file in Ruby on Rails

    - by Maestro1024
    Linking to external file in Ruby on Rails I have a file I want to share as a link in my rails app. I create a link to it in the .erb file like this <li><a href="somefile.pdf">Some File</a> </li> When I select the link I get the following error. Routing Error No route matches "/pages/somefile.pdf" with {:method=:get} Do I really need a route for this? I really just want the save as dialog to popup. Just a link to a file that the user can open or download. What is the rails way to do this (rails newbie here)?

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  • How to check file exists and rename in perl

    - by Disco
    I'm kinda newbie to perl and looking for a script that will handle file moving. #!/usr/bin/perl -w $filename = 'DUMBFILE'; $destination = '/some/location/'; if (-e $destination + $filename) { print "File Exists ! Renaming .."; move ('/tmp/' + $filename, $destination + $filename + '.1'); } else { move ('/tmp/' + $filename, $destination + $filename); } I'm able to rename it to 1, but i want to be renamed incrementally, like if file.1 exists, rename to .2, and .3 if .2 exists. That should be easy to do, but i'm kinda lost ..

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  • argv[1] loadImage problem xcode 3.2 and snow leopard

    - by ignacionieto
    Hi Im on mac snow leopard and test these code on xcode3.2 of the Learning OpenCV everything works fine but the image doesnt appear and in the windows. I had try to understand searching for two days what does argv[1] means, but Im still no clear. Im a newbie en C++. I had the image in the same directory where the main.cpp is #include <OpenCV/cv.h> #include <OpenCV/highgui.h> int main(int argc, char** argv) { IplImage* interest_img; CvRect interest_rect; if( argc == 7 && ((interest_img= cvLoadImage( argv[1],1) ) != 0 )) { A more easy example is here: http://books.google.cl/books?id=seAgiOfu2EIC&pg=PA17&lpg=PA17&dq=cvLoadImage%28argv[1]&source=bl&ots=hRJ5bhkAOf&sig=gyYAqZBnS6lCCXJz9Fz7vzOsF-U&hl=es&ei=dvdvS-fWG8eWtgePy_WCBg&sa=X&oi=book_result&ct=result&resnum=6&ved=0CBwQ6AEwBTgK#v=onepage&q=cvLoadImage%28argv[1]&f=false both I have test it but they dont work. Please help me

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  • Storm Trident 'average aggregator

    - by E Shindler
    I am a newbie to Trident and I'm looking to create an 'Average' aggregator similar to 'Sum(), but for 'Average'.The following does not work: public class Average implements CombinerAggregator<Long>.......{ public Long init(TridentTuple tuple) { (Long)tuple.getValue(0); } public Long Combine(long val1,long val2){ return val1+val2/2; } public Long zero(){ return 0L; } } It may not be exactly syntactically correct, but that's the idea. Please help if you can. Given 2 tuples with values [2,4,1] and [2,2,5] and fields 'a','b' and 'c' and doing an average on field 'b' should return '3'. I'm not entirely sure how init() and zero() work. Thank you so much for your help in advance. Eli

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  • loading files in prolog

    - by cubearth
    hey guys, am a bit of a newbie in Prolog. And am going thru this tutorial on line and it is telling me i can load other prolog files by typing: [filename]. but ever time I try this am getting ERROR: load_files/2: Arguments are not sufficiently instantiated. What am i doing wrong? P.S. the file is in the same directory as the one am working in. and here is a copy of the entire query and error. 12 ?- [KB5]. ERROR: load_files/2: Arguments are not sufficiently instantiated

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  • Which PHP session settings are incorrect here?

    - by Greg McNulty
    I see the savepath has no value but does it default to something? Are the other values OK? I have access to the server and PHP files but how and what do I change? The specific issue - On page 1: session_start(); $_SESSION['uType']=$row['usertype']; //save user type to session print_r($_SESSION); //Prints the user type successfully On page 2: session_start(); print_r($_SESSION); //BLANK?? Observed: Page 1 displays the session data. However, there are NO cookies created anywhere on the browser? Page 1 does a require to display page 2. Page 2 does not contain the session data. Using FireFox as the target browser (looking at cookies with web developer add-in) How do I get the session to work across all pages? Thank You and yes I am a newbie at this.

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  • Inline Form Validation in Django

    - by allanhenderson
    Newbie request that seems difficult to implement. I would like to make an entire inline formset within an admin change form compulsory.. so in my current scenario when I hit save on an Invoice form (in Admin) the inline Order form is blank. I'd like to stop people creating invoices with no orders associated. Anyone know an easy way to do that? Normal validation like (required=True) on the model field doesn't appear to work in this instance. Thanks!!

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  • Multiplying Block Matrices in Numpy

    - by Ada Xu
    Hi Everyone I am python newbie I have to implement lasso L1 regression for a class assignment. This involves solving a quadratic equation involving block matrices. minimize x^t * H * x + f^t * x where x 0 Where H is a 2 X 2 block matrix with each element being a k dimensional matrix and x and f being a 2 X 1 vectors each element being a k dimension vector. I was thinking of using nd arrays. such that np.shape(H) = (2, 2, k, k) np.shape(x) = (2, k) But I figured out that np.dot(X, H) doesn't work here. Is there an easy way to solve this problem? Thanks in advance.

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  • Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

    - by Fotis
    I am a newbie programmer, so I will need your help! Locally the webapp works ok with the db on it! When I uploaded the application on the cloudcontrol, it comes up with the following error: CDbConnection failed to open the DB connection: SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)! I suppose I have not uploaded the db. This is the very first time I upload a webapp on a server so I do not know the exact steps that I have to follow in order to upload the db on a server. Cloudcontrol has documentation about mysql! I did follow the steps but the webapp comes with the same error! Could you please tell me what steps I have to follow in order to make it working? I am sure that this error is due to lack of knowledge!

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  • Need help with homework(very short code)

    - by b3y4z1d
    I have a code, and I need to have it done until friday or so.I'd say 95% of it is finished,but the functions and the function-calling could use some grooming. It is really simple for anyone who knows C++ pretty well, but I'm a newbie and I just can't seem to get through this with the functions so if anyone could take a look and correct the few mistakes or add a line or two if needed I'd be very grateful. Here is the link to the full code, you'll understand the purpose of the code once you see it. I use Borland C++ by the way if it helps. Thanks in advance!

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  • On ocamlyacc, function application grammar and precedence

    - by Amadan
    I'm OCaml newbie and I'm trying to write a simple OCaml-like grammar, and I can't figure this out. My grammar allows something like this: let sub = fun x -> fun y -> x - y;; However, if I want to use the function so defined, I can write: (sub 7) 3 but I can't write sub 7 3, which really bugs me. For some reason, it gets interpreted as if I wrote sub (7 3) (which would treat 7 as a function with argument 3). The relevant sections are: /* other operators, then at the very end: */ %left APPLY /* ... */ expr: /* ... */ | expr expr %prec APPLY { Apply($1, $2) } Thanks!

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  • How to add/use an AJAX control in a non-AJAX enabled website in ASP.NET?

    - by Kuroro
    Hi guys! I have started a simple website using ASP.NET but it is not an AJAX-enabled project. Now what I need is to use an AJAX control (specifically Autocomplete) but I do not know how to add it to my website. What I should do guys? Do I need to add something in my library? What should I do in order to see it in the toolbox..? Please help me I'm just a newbie... Thanks in advance...

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  • How to navigate through folders without opening a new buffer in Emacs?

    - by Vivi
    (I don't know if it is important, but I am using Aquamacs - and yeah, I am a newbie) When I want to open a file I use C-x C-f and usually just chose my home folder. From there I go clicking on folders until I find the file I want. I really don't like thought that each new file I open creates a new buffer. This is especially annoying because I am using Aquamacs with the window (tab) option enabled. I know I could simply get rid of the window option, but I quite like it, except of course for when I open a file and a zillion tabs are created. So my question is: is there a way to disable the new buffer creation when "navigating" through folders? Thanks :)

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  • Creating New Objects in JavaScript

    - by Ken Ray
    I'm a relatively newbie to object oriented programming in JavaScript, and I'm unsure of the "best" way to define and use objects in JavaScript. I've seen the "canonical" way to define objects and instantiate a new instance, as shown below. function myObjectType(property1, propterty2) { this.property1 = property1, this.property2 = property2 } // now create a new instance var myNewvariable = new myObjectType('value for property1', 'value for property2'); But I've seen other ways to create new instances of objects in this manner: var anotherVariable = new someObjectType({ property1: "Some value for this named property", property2: "This is the value for property 2" }); I like how that second way appears - the code is self documenting. But my questions are: Which way is "better"? Can I use that second way to instantiate a variable of an object type that has been defined using the "classical"way of defining the object type with that implicit constructor? If I want to create an array of these objects, are there any other considerations? Thanks in advance.

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  • Avoid copying of data between user and kernel space and vice-versa

    - by bala1486
    Hello, I am developing a active messaging protocol for parallel computation that replaces TCP/IP. My goal is to decrease the latency of a packet. Since the environment is a LAN, i can replace TCP/IP with simpler protocol to reduce the packet latency. I am not writing any device driver and i am just trying to replace the TCP/IP stack with something simpler. Now I wanted to avoid copying of a packet's data from user space to kernel space and vice-versa. I heard of the mmap(). Is it the best way to do this? If yes, it will be nice if you can give links to some examples. I am a linux newbie and i really appreciate your help.. Thank you... Thanks, Bala

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  • C++ - dynamic pointer of array

    - by Eagle
    Hi to all, first i would like to say i am Newbie in C++. As part of my master thesis i am writing a program in C++ which also get as parameters the variables m and d (both integers). Were d is the power of 2 (this means 2^d elements). Parameter m define the number of possible interactions between one element and the total group (2^d elements). The number of possible interactions is computed as following: \kappa = \sum_{i=0}^m\binom{d}{i} (at present i generate vector of vectors for 2^d x \kappa, but my Prof. would like me to create different statistics to different m's. My first though was to to generate a dynamic array of m arrays of different sizes... Then i though of defining a 3-dim array with the biggest needed 2d array, but also program speed is important (e.g d = 20). i would like to ask for your advice how to define such kind of dynamic array that will also be fast. Regards

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  • iphone using 2 tableview

    - by Anonymous
    Hi, I 'm a iphone programming newbie. I m trying to implement an app with multi-level tableviews. The idea is if someone selects something on the first screen say then a new view opens(tableview) car make> list of models Honda > Acura, S2000,accord ... My challenge is to show the list of models in a new tableview & secondly change the size of hte list depending on the car selected. I have programmed so that when i select 'Honda' a new tableview opens. How do i populate data for the second table?? Any suggestions on how to proceed? thanks

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  • Create an own "OpenID-like system" Provider

    - by user502052
    I know that Facebook use their own OpenID-like system called "Facebook connect", which you can use to authenticate users on your site, among other features. In my case I have multiple Ruby on Rails applications: users.example.com profiles.example.com photos.example.com ... I would like to use 'users.example.com' as a web service that allows users to authenticate to all my other applications the same way as works "Facebook connect" or OpenID. In few words, 'users.example.com' must works as a "OpenID-like system" for my applications in 'example.com'. Can anyone give me tips and links to some useful resources? P.S.: since I am a newbie in this matter, I do not know if I'm saying things that make sense. So someone could help me to understand (if I am wrong) ...

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  • Convert void* representation of a dword to wstring

    - by graham.reeds
    I am having dumb monday so my apologies for posting such a newbie-like question. I am using CRegKey.QueryValue to return a dword value from the registry. QueryValue writes the value into void* pData and the length into ULONG* pnBytes. Now there is a way of getting it from pData into a wstring probably via stringstream. The closest I came was getting the result as a hex string. I was about to work on converting the hex representation to a dword and then from there to a wstring when I decided that was just dumb and ask on here instead of wasting another hour of my life on the problem.

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  • Serving static content with Struts2: Tomcat error 404

    - by Nicolas Raoul
    With Struts2 I can't find a way to serve a static CSS :-/ Newbie question but I could not find any answer on the Internet: The CSS file is static/styles.css in my WAR file. Tomcat replies with 404 when I request http://server/myapp/static/styles.css But it works if I put styles.css at the root of the WAR and request http://server/myapp/styles.css I tried adding the following to my struts.xml in the only package but still 404: <action name="/static/*"> <result>/static/{1}</result> </action> Or as a second package: <package name="static" extends="struts-default" namespace="/static"> <action name="/static/*"> <result>/static/{1}</result> </action> </package>

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  • Xcode missing Command Line Utility section - can't start Foundation project template

    - by Liza
    I downloaded the iPhone SDK from the iPhone dev center a couple of days ago and installed it yesterday. I'm following the Stanford iPhone development tutorials available on iTunes U. On Assignment 1B, the first instruction is to open a new Foundation Project template. The screenshot shows several sections in Xcode which my version doesn't seem to have, including the Command Line Utility section which the Foundation Project template is shown to be in. Does this need to be installed manually? I tried searching on Google with no luck. The fact that I'm an OS X newbie doesn't really help any either. Thanks in advance!

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  • Dynamics AX 2009 - Modify insert into smmActivities from ProjTableWizard?

    - by core
    I am an AX newbie, and I need to make a modification to the ProjTableWizard form code and have not been able to locate where I need to make the change. Essentially what I need to do is modify the part of the Wizard process when creating a sub-project. I need to figure out how a line is inserted into the smmActivities table, so that I can modify the “Activity Purpose” field (prefix it with the Activity Purpose of its parent Project from the ProjTable Form) following the “Finish” button click on the ProjTableWizard form. So far I have been unable to figure out how the ProjTableWizard form is triggering this insert into smmActivities (and how the Purpose field is being populated from the Wizard). Any help would be greatly appreciated! Thanks

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  • How to set the content of the $script_for_layout in cakephp?

    - by sipiatti
    Hi, I am learning cakephp in an autodidact manner and I am a complete newbie :) I am creating a simple application. Some logic work so now I going to dive into designing views and layouts. I read the docs and the tutorial but I could not find where to set the content of $script_for_layout. Especially I want to set a $html-css to create link in pages to the stylesheet. I found out that I could do it in directly in the layout template but I would like to create the same link in all pages/views/layouts to the stylesheet so I hope there is a simple way, and avoid to do this in all layouts and/or controllers

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