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• Java HTML Parsing

  - by Richie_W

  Hello everyone. I'm working on an app which scrapes data from a website and I was wondering how I should go about getting the data. Specifically I need data contained in a number of div tags which use a specific CSS class - Currently (for testing purposes) I'm just checking for "div class = "classname"" in each line of HTML - This works, but I can't help but feel there is a better solution out there. Ie. - Is there any nice way where I could give a class a line of HTML and have some nice methods like: boolean usesClass(String CSSClassname); String getText(); String getLink(); Many many thanks!

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• F# Static Member Type Constraints

  - by Stephen Swensen

  I'm trying to define a function, factorize, which uses structural type constraints (requires static members Zero, One, +, and /) similar to Seq.sum so that it can be used with int, long, bigint, etc. I can't seem to get the syntax right, and can't find a lot of resources on the subject. This is what I have, please help. let inline factorize (n:^NUM) = ^NUM : (static member get_Zero: unit->(^NUM)) ^NUM : (static member get_One: unit->(^NUM)) let rec factorize (n:^NUM) (j:^NUM) (flist: ^NUM list) = if n = ^NUM.One then flist elif n % j = ^NUM.Zero then factorize (n/j) (^NUM.One + ^NUM.One) (j::flist) else factorize n (j + ^NUM.One) (flist) factorize n (^NUM.One + ^NUM.One) []

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• GDI+ is giving me errors

  - by user146780

  I want to use GDI + just to load a png. I included the headers and lib file then I do: Bitmap b; b.fromfile(filename); I get this from the compiler though. Error 1 error C2146: syntax error : missing ';' before identifier 'b' c:\users\josh\documents\visual studio 2008\projects\vectorizer project\vectorizer project\vectorizer project.cpp 23 Error 2 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\josh\documents\visual studio 2008\projects\vectorizer project\vectorizer project\vectorizer project.cpp 23 Error 3 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int c:\users\josh\documents\visual studio 2008\projects\vectorizer project\vectorizer project\vectorizer project.cpp 23 Error 4 error C2440: '=' : cannot convert from 'const char [3]' to 'WCHAR *' c:\users\josh\documents\visual studio 2008\projects\vectorizer project\vectorizer project\vectorizer project.cpp 172 Error 5 error C2228: left of '.FromFile' must have class/struct/union c:\users\josh\documents\visual studio 2008\projects\vectorizer project\vectorizer project\vectorizer project.cpp 179 What is the correct way to do this? Thanks

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• Can you return an assignable lvalue in Scala?

  - by Alex R

  (note, lvalue is actually a term from the C grammar, I don't know what it's called in Scala!) Trying to learn Scala... this evening I'm working on an internal DSL for a dynamically scoped language that might resemble PHP syntax. My REPL is: Welcome to Scala version 2.7.6.final (Java HotSpot(TM) Client VM, Java 1.6.0). I have some made-up example code: class $(any: Any) { def update(sym: Symbol, any: Any) { println("line 2 executed");} def -(sym: Symbol) : $ = { println("line 1 executed"); return this } def update(any: Any) { println("line 3 executed");} } The following works as expected: scala var a = new $(0) a: $ = $@19238ad scala a('x) = "blah" line 2 executed On the other hand, why does the following not invoke the 1-parameter update method? scala a = 1 :6: error: type mismatch; found : Int(1) required: $ a = 1 ^ Ultimately, I would like this to work: a-'x = "blah" Thanks

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• What to put as the Provider for a mocked IQueryable

  - by Vaccano

  I am working with Moles and mocking a System.Data.Linq.Table. I got it constructing fine, but when I use it, it wants IQueryable.Provider to be mocked (moled) as well. I just want it to use normal Linq To Objects. Any idea what that would be? Here is the syntax I can use: MTable<User> userTable = new System.Data.Linq.Moles.MTable<User>(); userTable.Bind(new List<User> { UserObjectHelper.TestUser() }); // this is the line that needs help MolesDelegates.Func<IQueryProvider> provider = //Insert provider here! ^ userTable.ProviderSystemLinqIQueryableget = provider | | | what can I put here? ----------------------------------------+

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• Double interpolation of regular expressions in Perl

  - by tomdee

  I have a Perl program that stores regular expressions in configuration files. They are in the form: regex = ^/d+$ Elsewhere, the regex gets parsed from the file and stored in a variable - $regex. I then use the variable when checking the regex, e.g. $lValid = ($valuetocheck =~ /$regex/); I want to be able to include perl variables in the config file, e.g. regex = ^\d+$stored_regex$ But I can't work out how to do it. When regular expressions are parsed by Perl they get interpreted twice. First the variables are expanded, and then the the regular expression itself is parsed. What I need is a three stage process: First interpolate $regex, then interpolate the variables it contains and then parse the resulting regular expression. Both the first two interpolations need to be "regular expression aware". e.g. they should know that the string contain $ as an anchor etc... Any ideas?

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• Pretty print code to PDF

  - by Joel

  I'm searching for a tool that will take a source directory and produce a single PDF containing the source code, preferably with syntax highlighting. I would like to read the PDF on my phone, in order to get familiar with a code-base, or just to see what I can learn by reading a lot of code. I will most often be reading Ruby. I would prefer if the tool ran on Linux. I don't mind paying for a tool if it is particularly good. Any suggestions?

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• Python Fabric error

  - by jwesonga

  I'm running fabric (Django deployment to apache) and everything seems to work fine until I get to the task for installing the site: def install_site(): "Add the virtualhost file to apache" require('release', provided_by=[deploy, setup]) sudo('cd %(path)/releases/%(release)/%(release); cp %(project_name)/%(virtualhost_path)/%(project_domain) /etc/apache2/sites-available/%(project_domain)s') sudo('cd /etc/apache2/sites-available; a2ensite %(project_domain)') I keep getting this error: [173.203.124.16] sudo: cd %(path)/releases/%(release)/%(release); [173.203.124.16] err: /bin/bash: -c: line 0: syntax error near unexpected token `(' [173.203.124.16] err: /bin/bash: -c: line 0: `cd %(path)/releases/%(release)/%(r elease);' Warning: sudo() encountered an error (return code 2) while executing 'cd %(path) /releases/%(release)/%(release);' I've gone through the fabfile.py over and over and I can't see why the error is coming...any ideas?

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• Dynamically load nib for iPhone/iPad within view controller

  - by qui

  Hello I have converted an iPhone application using the wizard like thing in XCode into a universal app. It builds fine but obviously looks a bit rubbish in some areas :) I need to load nibs according to which device is being used. I dont wish to create my view controllers using initWithNib as I already have code to create the controllers with some data (initWithMyLovelyData) which doesnt do anything to do with nib loading. I know to find out the device you use UI_USER_INTERFACE_IDIOT() so I tried overriding the initWithNibName within the actual view controllers themselves, assuming they get called internally somehow. But it's not working as I guess I am unsure of the syntax. I have tried if(ipad..) self = [super initWithNibName:@"MyIpadNib" bundle:nibBundleOrNil]; And that doesnt work :/ EDIT - I know I have massively edited this, made my question a bit more specific after doing some more research - apologies!

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• perl one liner alternative to this bash "chain"?

  - by Michael Mao

  Hello everyone: I am trying to comprehend Perl following the way describe in the book "Minimal Perl". I've uploaded all source txt files onto my own server : results folder I got the output from using several bash commands in a "chain" like this: cat run*.txt | grep '^Bank[[:space:]]Balance'| cut -d ':' -f2 | grep -E '\$[0-9]+' I know this is far from the most concise and efficient, but at least it works... As our uni subject now moves onto the Perl part, I'd like to know if there is a way to get the same results in one line? I am trying something like the following code but stuck in the middle: Chenxi Mao@chenxi-a6b123bb /cygdrive/c/eMarket/output $ perl -wlne 'print; if $n=~/^Bank Balance/' syntax error at -e line 1, near "if $n" Execution of -e aborted due to compilation errors.

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• Storing file permissions in Subversion repository

  - by graham.reeds

  How do you store file permissions in a repository? A few files need to be read-only to stop a third party program from trashing it but after checking out of the repository they are set to read-write. I looked on google and found a blog post from 2005 that states that Subversion doesn't store file-permissions. There are patches and hook-scripts listed (only one url still exists). Three years later does Subversion still not store file permissions and are hooks the only way to go about this? (I've never done hooks and rather use something that is native to Subversion.)

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• Python 3.1.1 Class Question

  - by Protean

  I'm a new Python programmer who is having a little trouble using 'self' in classes. For example: class data: def __init__(self): self.table = [] def add(self, file): self.table.append(file) data.add('yes') In this function I want to have table be a variable stored in the class data and use add to modify it. However, when I run this script it gives me the error: Traceback (most recent call last): File "/Projects/Python/sfdfs.py", line 7, in <module> data.add('yes') TypeError: add() takes exactly 2 positional arguments (1 given) I assume that I am trying to call the function the wrong way in this instance, as this syntax is very similar to an example in the python documentation: http://docs.python.org/3.1/tutorial/classes.html

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• Why is there no IronPerl (Perl for .Net)?

  - by Renaud Bompuis

  I'm a bit disappointed that there doesn't seem to be any effort to make Perl a first-class citizen of the .Net world. I've read a few 'reasons' in the past but I don't see why they can't be overcome (different garbage collectors, hard-to-parse syntax, part of CPAN modules couldn't be ported, different communities, ...). Activestate has a Perl.Net product but it's a hack (in the good sense) around a standard interpreter and some syntactic sugar to interoperate with .Net assemblies. A few years ago they stopped they visual studio integration of Perl citing lack of interest. That was a while ago, before all the changes to .Net to make it more 'dynamic'. Am I the only one who yearns for IronPerl?

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• Shopping Portal based on XML Data - XSLT or PHP?

  - by buggy1985

  For my bachelor thesis I want to implement a shopping (price comparison) portal prototype based on XML Data. The main requirement is to get a very clear and customizable HTML template, which should be hosted by the customer on his own webserver. I'm not very sure if XSLT meets this requirements, as it generates a lot of xsl-related code. It is not easy to understand for people with little HTML skills. I have some experience with the PHP templating engine Smarty. The syntax is much better, but I'm not sure if it's a good idea to parse the XML data with PHP, as it is very complex. Which language should I choose for a web application with high complexity? XSLT or PHP?

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• Remove characters after specific character in string, then remove substring?

  - by sah302

  I feel kind of dumb posting this when this seems kind of simple and there are tons of questions on strings/characters/regex, but I couldn't find quite what I needed (except in another language: http://stackoverflow.com/questions/2176544/remove-all-text-after-certain-point). I've got the following code: [Test] public void stringManipulation() { String filename = "testpage.aspx"; String currentFullUrl = "http://localhost:2000/somefolder/myrep/test.aspx?q=qvalue"; String fullUrlWithoutQueryString = currentFullUrl.Replace("?.*", ""); String urlWithoutPageName = fullUrlWithoutQueryString.Remove(fullUrlWithoutQueryString.Length - filename.Length); String expected = "http://localhost:2000/somefolder/myrep/"; String actual = urlWithoutPageName; Assert.AreEqual(expected, actual); } I tried the solution in the question above (hoping the syntax would be the same!) but nope. I want to first remove the queryString which could be any variable length, then remove the page name, which again could be any length. How can I get the remove the query string from the full URL such that this test passes?

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• jQuery datepicker getMinDate '+1d'

  - by Adrian Adkison

  Once I have set the minDate property of a datepicker with the convenient string syntax $(elem).datepicker('option','minDate','+1d +3m'); how can I get the date object of the minDate? To help illustrate, there is a method $(elem).datepicker('getDate'); which returns the date that is entered in the input in the format of a date object. I would like the same thing but for datepicker('getMinDate'). There is an option like this $(elem).datepicker('option','minDate'); but this returns '+1d +3m' which is not helpful. I need the actual date object to compare with another date object. Any ideas?

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• Batch file conversion to vbscript

  - by blademasterson

  I need to convert a batch file to vbscript but am unfamiliar with both. If I can understand what is going on in the batch file I can work out the vbscript easy enough. Problem is the batch file runs a few cscript commands which is supposed to have a syntax of cscript [script name] [host options] [script arguments] However whomever wrote the batch file doesn't use it in a standard manner so if someone could explain the use of the command I can work out the rest. Sample line: Filename and actual url's removed for safety sake cscript file.vbs -a -r url -h url -o raw

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• build .pyc prob

  - by Apache

  hi experts, i build .py as follow python /root/pyinstaller-1.4/Makespec.py test.py then python /root/pyinstaller-1.4/Build.py test.spec this working fine then i test to build with my .pyc as follow python /root/pyinstaller-1.4/Makespec.py test.pyc then python /root/pyinstaller-1.4/Build.pyc test.spec but its generating error as follow checking Analysis building because inputs changed running Analysis outAnalysis0.toc Analyzing: /root/pyinstaller-1.4/support/_mountzlib.py Analyzing: /root/pyinstaller-1.4/support/useUnicode.py Analyzing: test.pyc Traceback (most recent call last): File "/root/pyinstaller-1.4/Build.py", line 1160, in main(args[0], configfilename=opts.configfile) File "/root/pyinstaller-1.4/Build.py", line 1148, in main build(specfile) File "/root/pyinstaller-1.4/Build.py", line 1111, in build execfile(spec) File "test.spec", line 3, in pathex=['/root/test']) File "/root/pyinstaller-1.4/Build.py", line 245, in init self.postinit() File "/root/pyinstaller-1.4/Build.py", line 196, in postinit self.assemble() File "/root/pyinstaller-1.4/Build.py", line 314, in assemble analyzer.analyze_script(script) File "/root/pyinstaller-1.4/mf.py", line 559, in analyze_script co = compile(string.replace(stuff, "\r\n", "\n"), fnm, 'exec') TypeError: compile() expected string without null bytes why this error occur, cannot we build using .pyc, or there is other way to build it,

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• Assign table values to multiple variables using a single SELECT statement and CASE?

  - by Darth Continent

  I'm trying to assign values contained in a lookup table to multiple variables by using a single SELECT having multiple CASE statements. The table is a lookup table with two columns like so: [GreekAlphabetastic] SystemID Descriptor -------- ---------- 1 Alpha 2 Beta 3 Epsilon This is my syntax: SELECT @VariableTheFirst = CASE WHEN myField = 'Alpha' THEN tbl.SystemID END, @VariableTheSecond = CASE WHEN myField = 'Beta' THEN tbl.SystemID END, @VariableTheThird = CASE WHEN myField = 'Epsilon' THEN tbl.SystemID END FROM GreekAlphabetastic tbl However, when I check the variables after this statement executes, I expected each to be assigned the appropriate value, but instead only the last has a value assigned. SELECT @VariableTheFirst AS First, @VariableTheSecond AS Second, @VariableTheThird AS Third Results: First Second Third NULL NULL 3 What am I doing wrong?

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• MIDL2003 Error in VC6 project

  - by graham.reeds

  While bug fixing I tracked a problem to an old vc6 compiled dll that hasn't been touched in nearly 3 years. After checking out the most recent source I am getting the following error when trying to compile. Processing C:\PROGRAM FILES\MICROSOFT SDK\INCLUDE\msxml.idl msxml.idl .\ocidl.idl(1524) : error MIDL2003 : redefinition : IErrorLog .\ocidl.idl(1541) : error MIDL2003 : redefinition : IPropertyBag Google gives lots of suggestions regarding Visual Studio 2002 - 2003 errors but I can't find anything that relates to Visual Studio 6 or can be applied to my problem. I did find this page but following it's advice didn't fix my problem. Does anyone have any suggestions on how to fix this? (I am presuming that it did work once.) Other items of interest: I have the February 2003 Platform SDK installed, and looking at the add/remove program page I have Micrsoft XML Parser and SDK, MSXML 4.0 SP2 and MSXML 6.0 Parser too.

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• Handling two WebException's properly

  - by baron

  Hi Everyone, I am trying to handle two different WebException's properly. Basically they are handled after calling WebClient.DownloadFile(string address, string fileName) AFAIK, so far there are two I have to handle, both WebException's: The remote name could not be resolved (i.e. No network connectivity to access server to download file) (404) File not nound (i.e. the file doesn't exist on the server) There may be more but this is what I've found most important so far. So how should I handle this properly, as they are both WebException's but I want to handle each case above differently. This is what I have so far: try { using (var client = new WebClient()) { client.DownloadFile("..."); } } catch(InvalidOperationException ioEx) { if (ioEx is WebException) { if (ioEx.Message.Contains("404") { //handle 404 } if (ioEx.Message.Contains("remote name could not") { //handle file doesn't exist } } } As you can see I am checking the message to see what type of WebException it is. I would assume there is a better or a more precise way to do this? Thanks

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• How do I implement a dispatch table in a Perl OO module?

  - by Iain

  I want to put some subs that are within an OO package into an array - also within the package - to use as a dispatch table. Something like this package Blah::Blah; use fields 'tests'; sub new { my($class )= @_; my $self = fields::new($class); $self->{'tests'} = [ $self->_sub1 ,$self->_sub2 ]; return $self; } _sub1 { ... }; _sub2 { ... }; I'm not entirely sure on the syntax for this? $self->{'tests'} = [ $self->_sub1 ,$self->_sub2 ]; or $self->{'tests'} = [ \&{$self->_sub1} ,\&{$self->_sub2} ]; or $self->{'tests'} = [ \&{_sub1} ,\&{_sub2} ]; I don't seem to be able to get this to work within an OO package, whereas it's quite straightforward in a procedural fashion, and I haven't found any examples for OO. Any help is much appreciated, Iain

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• MIPS assembly: how to declare integer values in the .data section?

  - by Barney

  I'm trying to get my feet wet with MIPS assembly language using the MARS simulator. My main problem now is how do I initialize a set of memory locations so that I can access them later via assembly language instructions? For example, I want to initialize addresses 0x1001000 - 0x10001003 with the values 0x99, 0x87, 0x23, 0x45. I think this can be done in the data declaration (.data) section of my assembly program but I'm not sure of the syntax. Is this possible? Alternatively, in the .data section, how do I specify storing the integer values in some memory location (I don't care where, but I just want to reference them somewhere). So I'm looking for the C equivalent of "int x = 20, y=30, z=90;" I know how to do that using MIPS instructions but is it possible to declare something like that in the .data section of a MIPS assembly program?

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• how to echo data that we read with file_get_contents

  - by Ronnie Chester Lynwood

  hello. im trying to echo YH if $url contains http://yahoo.com/ ! how can i do it? I've tried something like this; $url = "'".$get['url']."'"; $needle = "http://yahoo.com/"; $contents = file_get_contents($url); if(stripos($contents, $needle) !== false) { $qqq = "YH"; } but it's not working. can anybody help me with true syntax? thanks..

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• PHP eval issue with PHP + HTML code

  - by i-CONICA

  Hi, I've got PHP and HTML code stored in a database table. When I get this data, I need to echo the HTML and process the PHP. I thought I could use eval() for this, which works, if I do this eval("echo 'dlsj'; ? EVALED "); I get dlsjEVALED printed out. The problem is, I get a fatal error when I run longer scripts. Things like: Parse error: syntax error, unexpected '<' in /home/content.php(18) : eval()'d code on line 1 Any advice = awesome. Thanks.

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