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• Simple PERL Problem

  - by Suezy

  I have an array of numbers: @numbers = 1,2,3,6,8,9,11,12,13,14,15,20 and I want to print it this way: 1-3,6,8-9,11-15,20 Any thoughts? Of course I tried using the most common "looping", but still didn't get it.

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• Why can't I access the instance.__class__ attribute in Python?

  - by froadie

  I'm new to Python, and I know I must be missing something pretty simple, but why doesn't this very, very simple code work? class myClass: pass testObject = myClass print testObject.__class__ I get the following error: AttributeError: class myClass has no attribute '__class__' Doesn't every object in Python have a __class__ attribute?

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• LUA: check if file is a directory

  - by PeterMmm

  If i have this code local f = io.open("../web/", "r") print(io.type(f)) -- output: file how can i know f points to a directory ?

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• How to get path to the installed GIT in Python?

  - by Vladimir Prudnikov

  I need to get a path to the GIT on Max OS X 10.6 using Python 2.6.1 into script variables. I use this code for that: r = subprocess.Popen(shlex.split("which git"), stdout=subprocess.PIPE) print r.stdout.read() but the problem is that output is empty (I tried stderr too). It works fine with another commands such as pwd or ls. Can anyone help me with that?

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• variables reference value of string

  - by xdevel2000

  How can I get the reference value of a string object? If I hava a class like class T() { } T t = new T(); System.out.println( t); print out T@a3455467 that is the reference value inside t but for string? maybe with method hashCode()??

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• A PDF viewer with a toolbar actions

  - by amirouche

  A want a Drupal who let me to the Adminintrator upload a pdf files and the users can read them in a viewer with a Toolbar that contains print, download and quit boutons like the link text website. The possibility to have statistics on user's Toolbar actions will be appreciated.

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• Count number of occurrences of a pattern in a file (even on same line)

  - by jrdioko

  When searching for number of occurrences of a string in a file, I generally use: grep pattern file | wc -l However, this only finds one occurrence per line, because of the way grep works. How can I search for the number of times a string appears in a file, regardless of whether they are on the same or different lines? Also, what if I'm searching for a regex pattern, not a simple string? How can I count those, or, even better, print each match on a new line?

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• Perl: reference to subroutine in external .pm file

  - by Pmarcoen

  I'm having some trouble figuring out how to make a reference to a subroutine in an external .pm file. Right now, I'm doing this : External file package settingsGeneral; sub printScreen { print $_[0]; } Main use settingsGeneral; my $printScreen = settingsGeneral::printScreen; &$printScreen("test"); but this result into an error: Can't use string ("1") as a subroutine ref while "strict refs" in use

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• Replace method doesn't work properly

  - by John Smith

  Hello I have a string and when i try to use replace method in for loop it doesn't work String phrase="hello friend"; String[] wordds=phrase.split(" "); String newPhrase="sup friendhello weirdo"; for (int g=0;g<2;g++) { finalPhrase+=newPhrase.replace(wordds[g],"");} } System.out.println(finalPhrase) It prints out "sup hello weirdo" and i expect it to print "sup weirdo". What am i doing wrong?

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• Google app engine How to count SUM from datestore?

  - by Alon

  Hey, Im wondering, how can i get a SUM of a rating entity i get from the datastore (python)? should i: ratingsum = 0 for rating in ratings: ratingsum + rating print ratingsum ?

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• Generating XPS document from a Windows Application

  - by suecnus

  I want to capture the html content in web browser and print to XPS Document. I am using a Windows application to do it since it is used in IE toolbar. Is there a way to capture the httpwebrequest to read the content of the webpage to to a FixedDocument object or other through other ways so that it can be converted to an XPSDocument?

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• Printing out variables and values in a Groovy object

  - by geejay

  How can I print out the (public and internal) variables and their values of a Groovy object? This has to be a dynamic solution, i.e at runtime.

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• What's the equivalent to "method reference" in Ruby

  - by Oscar Reyes

  for instance in python it is possible to assign a method to a variable: class MyClass def myMethod(self): return "Hi" x = MyClass() method = x.myMethod print method() # prints Hi I know this should be possible in Ruby, but I don't know what's the syntax.

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• Is there a way that I can force mod_perl to re-use buffer memory?

  - by Pavel Georgiev

  Hi, I have a Perl script running in mod_perl that needs to write a large amount of data to the client, possibly over a long period. The behavior that I observe is that once I print and flush something, the buffer memory is not reclaimed even though I rflush (I know this can't be reclaimed back by the OS). Is that how mod_perl operates and is there a way that I can force it to periodically free the buffer memory, so that I can use that for new buffers instead of taking more from the OS?

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• Adding an object to another module's globals in python

  - by noam

  I know this is very evil, but is it possible to add an object to another module's globals, something like: #module dog.py import cat cat.globals.addVar('name','mittens') and #module cat.py print name #mittens

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• How to change verbose code in Ruby to simpler using Metaprogramming?

  - by Jian Lin

  It is said that Ruby is a metaprogramming language. I wonder if the first 3 lines can be made less verbose using metaprogramming? RUBY_VERSION ||= "unknown version" RUBY_PATCHLEVEL ||= "unknown patchlevel" RUBY_PLATFORM ||= "unknown platform" print "Ruby ", RUBY_VERSION, " patch ", RUBY_PATCHLEVEL, " on ", RUBY_PLATFORM

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• Application security issues to consider

  - by user279521

  I am working on the design of a high security application (involving financial information, personal information etc). I need to identify what security measures (application level) will be implemented. The application will involve sending data to and from a database, user login, import export to csv, txt files, and print function. What security features do I need to consider for such an application. (SQL injection for starters) ?

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• Is it possible to log only one level messages with Log4J

  - by Ravi

  If I set the log level to DEBUG, All messages with log level = DEBUG will be logged/printed. But can I set log level to only DEBUG, such that messages with log level only with DEBUG will be printed. Or can give a range like print all messages whose log level is =DEBUG but < ERROR?

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• How can I quickly sum all numbers in a file?

  - by Mark Roberts

  I have a file which contains several thousand numbers, each on it's own line: 34 42 11 6 2 99 ... I'm looking to write a script which will print the sum of all numbers in the file. I've got a solution, but it's not very efficient. (It takes several minutes to run.) I'm looking for a more efficient solution. Any suggestions?

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• Does the java JFC hash table use seperate chaining resolution? Can I traverse each list in the table

  - by Matt

  I have written a program to store a bunch of strings in a JFC hash table. There are defiantly collisions going on, but I don't really know how it is handling them. My ultimate goal is to print the number of occurrences of each string in the table, and traversing the bucket or list would work nicely. Or maybe counting the collisions? Or do you have another idea of how I could get a count of the elements?

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• Two collections and a for loop. (Urgent help needed) Checking an object variable against an inputted

  - by Elliott

  Hi there, I'm relatively new to java, I'm certain the error is trivial. But can't for the life of me spot it. I have an end of term exam on monday and currently trying to get to grips with past papers! Anyway heregoes, in another method (ALGO_1) I search over elements of and check the value H_NAME equals a value entered in the main. When I attempt to run the code I get a null pointer exception, also upon trying to print (with System.out.println etc) the H_NAME value after each for loop in the snippet I also get a null statement returned to me. I am fairly certain that the collection is simply not storing the data gathered up by the Scanner. But then again when I check the collection size with size() it is about the right size. Either way I'm pretty lost and would appreciate the help. Main questions I guess to ask are: from the readBackground method is the data.add in the wrong place? is the snippet simply structured wrongly? oh and another point when I use System.out.println to check the Background object values name, starttime, increment etc they print out fine. Thanks in advance.(PS im guessing the formatting is terrible, apologies.) snippet of code: for(Hydro hd: hydros){ System.out.println(hd.H_NAME); for(Background back : backgs){ System.out.println(back.H_NAME); if(back.H_NAME.equals(hydroName)){ //get error here public static Collection<Background> readBackground(String url) throws IOException { URL u = new URL(url); InputStream is = u.openStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader b = new BufferedReader(isr); String line =""; Vector<Background> data = new Vector<Background>(); while((line = b.readLine())!= null){ Scanner s = new Scanner(line); String name = s.next(); double starttime = Double.parseDouble(s.next()); double increment = Double.parseDouble(s.next()); double sum = 0; double p = 0; double nterms = 0; while((s.hasNextDouble())){ p = Double.parseDouble(s.next()); nterms++; sum += p; } double pbmean = sum/nterms; Background SAMP = new Background(name, starttime, increment, pbmean); data.add(SAMP); } return data; } Edit/Delete Message

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• (Pivot) tables generation

  - by Yasir Arsanukaev

  Hello. We use Excel VBA to load data using SQL, process it and generate (pivot) tables. I wonder if there any other decent alternatives. I've been thinking on PDF generation but not sure if there are handy tools to construct pivot tables. Important requirement is the ability to print data correctly, so that everything fits on the page(s). Thanks.

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• This recursive function puzzles me, what is going on?

  - by Fred

  I was playing around with recursion and did this simple function. I was assuming that it would print out 9-0 to stdout, but, it prints 0-9. I can't see how that happens at all. int main() { rec(10); return 0; } int rec(int n){ if(n > 0) printf("%d\n", rec(n -1)); return n; }

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• Loop over fields in eclipse code template

  - by fastcodejava

  Can you do loops in code templates, e.g I want to print all the fields in a class. Is there a template for that?

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• How to hide all buttons in IE6 without hiding all inputs in a printing stylesheet?

  - by Dave

  Hi guys, Whats the easiest method of hiding all buttons but not all inputs (say drop down lists, text input boxes) in CSS that works with IE6. The purpose of this CSS file is for printing (using the media="Print" tag in the HTML).

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