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  • What must I learn to parse dynamic HTML sites with PHP?

    - by butteff
    What I must to learn to write php web-site grabber (parser)? It must collect information from other websites, such as as weather forecast, wiki "on this day", some news and other useful and interesting "every day" information! what i must to read for writing m3u player on php? sorry for my bad english

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  • RAKE won'tt create xml file

    - by user296507
    hi, i'm a bit lost here as to why my RAKE task will not create the desired XML file, however it works fine when i have the method 'build_xml' in the .RB file. require 'rubygems' require 'nokogiri' require 'open-uri' namespace :xml do desc "xml build test" task :xml_build => :environment do build_xml end end def build_xml #build xml docoument builder = Nokogiri::XML::Builder.new do |xml| xml.root { xml.location { xml.value "test" } } end File.open("test.xml", 'w') {|f| f.write(builder.to_xml) } end

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  • Code Golf: Countdown Number Game

    - by Noldorin
    Challenge Here is the task, inspired by the well-known British TV game show Countdown. The challenge should be pretty clear even without any knowledge of the game, but feel free to ask for clarifications. And if you fancy seeing a clip of this game in action, check out this YouTube clip. It features the wonderful late Richard Whitely in 1997. You are given 6 numbers, chosen at random from the set {1, 2, 3, 4, 5, 6, 8, 9, 10, 25, 50, 75, 100}, and a random target number between 100 and 999. The aim is to make use the six given numbers and the four common arithmetic operations (addition, subtraction, multiplication, division; all over the rational numbers) to generate the target - or as close as possible either side. Each number may only be used once at most, while each arithmetic operator may be used any number of times (including zero.) Note that it does not matter how many numbers are used. Write a function that takes the target number and set of 6 numbers (can be represented as list/collection/array/sequence) and returns the solution in any standard numerical notation (e.g. infix, prefix, postfix). The function must always return the closest-possible result to the target, and must run in at most 1 minute on a standard PC. Note that in the case where more than one solution exists, any single solution is sufficient. Examples: {50, 100, 4, 2, 2, 4}, target 203 e.g. 100 * 2 + 2 + (4 / 4) e.g. (100 + 50) * 4 * 2 / (4 + 2) {25, 4, 9, 2, 3, 10}, target 465 e.g. (25 + 10 - 4) * (9 * 2 - 3) {9, 8, 10, 5, 9, 7), target 241 e.g. ((10 + 9) * 9 * 7) + 8) / 5 Rules Other than mentioned in the problem statement, there are no further restrictions. You may write the function in any standard language (standard I/O is not necessary). The aim as always is to solve the task with the smallest number of characters of code. Saying that, I may not simply accept the answer with the shortest code. I'll also be looking at elegance of the code and time complexity of the algorithm! My Solution I'm attempting an F# solution when I find the free time - will post it here when I have something! Format Please post all answers in the following format for the purpose of easy comparison: Language Number of characters: ??? Fully obfuscated function: (code here) Clear (ideally commented) function: (code here) Any notes on the algorithm/clever shortcuts it takes.

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  • What's the PHP framework equivalent of jQuery?

    - by Cortopasta
    jQuery made javascript so easy for me, I was able to get up and running in a couple of hours doing most tasks. Which PHP framework has similar ease of use and rapid development/write less ability? Or am I stuck basically learning a new language no matter what framework I decide on?

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  • Intents? How to register to be alerted for incoming emails?

    - by Justin
    Extreme Android developer newbie here...well, new to Android development, not development in general. I want to write an application that gets notified when emails come into the device, and takes various actions based on data in the email (subject, sender, to, etc). I think what I have to do is create a BroadcastReceiver with an IntentFilter. The problem I'm having is figuring out what Intent(s) I need to "listen" for. Can anyone point me in the right direction? Thanks.

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  • Ant: Create directory containing file if it doesn't already exist?

    - by Benny
    Basically, I get a path like "C:\test\subfolder1\subfolder2\subfolder3\myfile.txt", but it's possible that subfolders 1-3 don't exist already, which means I'd get an exception if I try to write to the file. Is there a way to create the directory structure the target file is in, either by using some task that creates the structure when it outputs to the file and then deleting the file, or by parsing the directory part of the path and using the mkdir task first? Any help is appreciated. Thanks, B.J.

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  • Linked lists in Java - help with assignment

    - by user368241
    Representation of a string in linked lists In every intersection in the list there will be 3 fields : The letter itself. The number of times it appears consecutively. A pointer to the next intersection in the list. The following class CharNode represents a intersection in the list : public class CharNode { private char _data; private int _value; private charNode _next; public CharNode (char c, int val, charNode n) { _data = c; _value = val; _next = n; } public charNode getNext() { return _next; } public void setNext (charNode node) { _next = node; } public int getValue() { return _value; } public void setValue (int v) { value = v; } public char getData() { return _data; } public void setData (char c) { _data = c; } } The class StringList represents the whole list : public class StringList { private charNode _head; public StringList() { _head = null; } public StringList (CharNode node) { _head = node; } } Add methods to the class StringList according to the details : (I will add methods gradually according to my specific questions) (Pay attention, these are methods from the class String and we want to fulfill them by the representation of a string by a list as explained above) public int indexOf (int ch) - returns the index in the string it is operated on of the first appeareance of the char "ch". If the char "ch" doesn't appear in the string, returns -1. If the value of fromIndex isn't in the range, returns -1. Pay attention to all the possible error cases. Write what is the time complexity and space complexity of every method that you wrote. Make sure the methods you wrote are effective. It is NOT allowed to use ready classes of Java. It is NOT allowed to move to string and use string operations. Here is my try to write the method indexOf (int ch). Kindly assist me with fixing the bugs so I can move on. public int indexOf (int ch) { int count = 0; charNode pose = _head; if (pose == null ) { return -1; } for (pose = _head; pose!=null && pose.getNext()!='ch'; pose = pose.getNext()) { count++; } if (pose!=null) return count; else return -1; }

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  • Is using joins in select clause slow in Oracle?

    - by gniquil
    I would like to write a query like the following select username, (select state from addresses where addresses.username = users.username) email from users This works in Oracle (assuming the result from the inner query is unique). However, is there a performance penalty associated with this style of writing query?

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  • Parsing numbers at PreviewTextInput

    - by Nitin Chaudhari
    I have a WPF application in which I have a hook at PreviewTextInput, through that I get the currently entered character and I have the string already entered. Given this I need to write the following function : bool ShouldAccept(char newChar,string existingText) existingText can be comma seperated valid numbers(including exponential) and it should just return false when invalid characters are pressed. My code(if else based) currently has a lot of flaws, I wanted to know if there is any smart way to do it.

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  • directed unweighted graphs C

    - by fang_dejavu
    Hi, I'm planning to write a program in C that builds the adjacency list, performs the depth first search, performs the breadth first search, and performs the topological sort. Where can I get some info about this subject in C? Any help is appreciated

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  • a linq query to find something

    - by rap-uvic
    Hi, I have object A which contains multiple instances of object B, which in turn contains multiple instances of object C. I need to write a function which, given Object A needs search through instances of objects B and objects C and find a particular object C. How would I do this using LINQ?

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  • How to check WCF generated client is compatible with service at runtime

    - by Schneider
    I realise that WCF and services in general are meant to be loosely coupled. But I have a requirement that my client app can check whether an given WCF endpoint contains a service that matches its generated client code. In other words I need to check for a compatible service. Obviously I could have a method that returns a manually maintained version number, but I would prefer not to have to write my own meta data system if WCF can do something out of the box.

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  • How to do INSERT into a table records extracted from another table

    - by Martin
    I'm trying to write a query that extracts and transforms data from a table and then insert those data into another table. Yes, this is a data warehousing query and I'm doing it in MS Access. So basically I want some query like this: INSERT INTO Table2(LongIntColumn2, CurrencyColumn2) VALUES (SELECT LongIntColumn1, Avg(CurrencyColumn) as CurrencyColumn1 FROM Table1 GROUP BY LongIntColumn1); I tried but get a syntax error message. What would you do if you want to do this?

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  • Hooking entity creation in SQLAlchemy

    - by Dan Ellis
    I want to write a SessionExtension that fires a 'Foo-created' event or 'Bar-created' event every time a new Foo or new Bar is committed to the database. However, once inside the after_commit method, I don't know where to find which entities have been committed. Where do I get this information?

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  • How do I encode Unicode strings using pyodbc to save to a SAS dataset?

    - by Chris B.
    I'm using Python to read and write SAS datasets, using pyodbc and the SAS ODBC drivers. I can load the data perfectly well, but when I save the data, using something like: cursor.execute('insert into dataset.test VALUES (?)', u'testing') ... I get a pyodbc.Error: ('HY004', '[HY004] [Microsoft][ODBC Driver Manager] SQL data type out of range (0) (SQLBindParameter)') error. The problem seems to be the fact I'm passing a unicode string; what do I need to do to handle this?

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  • Using the framework of the problems encountered SharpArch

    - by livebean
    I try to test SharpArch frame, directly in the provided example code to write some code to add test data, but unsuccessful, do not have any information to me! ICustomerRepository customerRepository = new CustomerRepository(); Customer customer = new Customer("Jack Chen"); customer.SetAssignedIdTo("JACKK"); customerRepository.Save(customer); I just had an instance of CustomerRepository operation, do not understand why there is no new data on the data table

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  • Annotations present at compile time but absent at runtime

    - by deamon
    It is possible to use Java class files which includes annotations that are not present at runtime? Example: I want to write a class with the JPA @Embeddable annotation, which would be present at compile time (maven scope: "provided"). But the annoatation definition could be absent at runtime, if the class is used outside a JPA application.

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  • Structure for Django methods that span different models

    - by Duncan
    I have two models (say A and B) which are independent and have independent methods. I want to add some methods that operate on both models though. for example, addX() will create an object from both models A and B. What's the best way to structure code in this situation, since it doesnt make sense to have the method belong to either of the models methods. Is the standard to write a service for the kind of 'abstract' model?

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  • Load image from string

    - by zaf
    Given a string containing jpeg image data, is it possible to load this directly in pygame? I've tried using StringIO but failed and I don't completely understand the 'file-like' object concept. Currently, as a workaround, I'm saving to disk and then loading an image the standard way: # imagestring contains a jpeg f=open('test.jpg','wb') f.write(imagestring) f.close() image=pygame.image.load('test.jpg') Any suggestions on improving this so that we avoid creating a temp file?

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