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  • Concept of bit fields

    - by user1369975
    Whenever I read a code like this: struct node { int x : 2; int p : 4; }n; with bit fields involved, I get really confused, as to how they are represented in memory, what is sizeof(n) etc., how does it differ with normal members of structures? I tried referring K&R and http://en.wikipedia.org/wiki/Bit_field but they little to remove my confusion. What concepts of bit fields am I failing to grasp?

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  • How to stop Office 2010 changing " and ' to smart quotes

    - by fatherjack
    I have recently upgraded to Office 2010 at work and there are a few things that are a real problem for me. As a T-SQL developer and SQL Server DBA I copy and paste code to and from various applications and if Word gets involved it can has disastrous consequences. There is an option that appears to be defaulted to "on" that changes a straight quote to what Word describes as a smart quote - see the image below. Note - the single quote suffers from the same effect. Now, getting to the point that...(read more)

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  • Test Preparation Materials

    - by GavinPayneUK
    I wrote an article on my personal blog a few weeks ago about my preparation for my first Microsoft exam, 70-432.  ( link )  Since then I’ve been reading and demo’ing all the relevant features of SQL Server in the hope that if I get questions on them I’ll be prepared. I’ve learnt a few things in the last couple of weeks, some good, some bad which I’ll now share. The first thing I found is that learning about how SQL Server works is fun and interesting, far better than spending an evening...(read more)

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  • How to create conditional If / Else logic in a BizTalk map.

    How to create conditional logic in a BizTalk map using out of the box functoids. Example takes in a Xml file containing Films and their receipts and create a destination file whose structure id dependent on the incoming data.  read moreBy BiZTech KnowDid you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Is Running programs by address common?

    - by dgood1
    I have read some of the things posted here and I keep reading about people running stuff like /foldername/executable -cmd NAME (was reading about a programmer using Eclipse, so he was testing something he made) I don't see things like that when I run things here (Ubuntu 12.04) because of the launcher and the Ubuntu button at the very top. That and Eclipse indigo has a button for running and testing things it makes. Just asking how and why it's common? (assuming it's the Terminal[Ctrl+alt+T] but I'm not sure)

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  • Reading XML Content

    using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Xml.Linq; using System.Diagnostics; using System.Threading; using System.Xml; using System.Reflection; namespace XMLReading { class Program     { static void Main(string[] args)         { string fileName = @"C:\temp\t.xml"; List<EmergencyContactXMLDTO> emergencyContacts = new XmlReader<EmergencyContactXMLDTO, EmergencyContactXMLDTOMapper>().Read(fileName); foreach (var item in emergencyContacts)             { Console.WriteLine(item.FileNb);             }          }     } public class XmlReader<TDTO, TMAPPER> where TDTO : BaseDTO, new() where TMAPPER : PCPWXMLDTOMapper, new()     { public List<TDTO> Read(String fileName)         { XmlTextReader reader = new XmlTextReader(fileName); List<TDTO> emergencyContacts = new List<TDTO>(); while (true)             {                 TMAPPER mapper = new TMAPPER(); bool isFound = SeekElement(reader, mapper.GetMainXMLTagName()); if (!isFound) break;                 TDTO dto = new TDTO(); foreach (var propertyKey in mapper.GetPropertyXMLMap())                 { String dtoPropertyName = propertyKey.Key; String xmlPropertyName = propertyKey.Value;                     SeekElement(reader, xmlPropertyName);                     SetValue(dto, dtoPropertyName, reader.ReadElementString());                 }                 emergencyContacts.Add(dto);             } return emergencyContacts;         } private void SetValue(Object dto, String propertyName, String value)         { PropertyInfo prop = dto.GetType().GetProperty(propertyName, BindingFlags.Public | BindingFlags.Instance);             prop.SetValue(dto, value, null);         } private bool SeekElement(XmlTextReader reader, String elementName)         { while (reader.Read())             { XmlNodeType nodeType = reader.MoveToContent(); if (nodeType != XmlNodeType.Element)                 { continue;                 } if (reader.Name == elementName)                 { return true;                 }             } return false;         }     } public class BaseDTO     {     } public class EmergencyContactXMLDTO : BaseDTO     { public string FileNb { get; set; } public string ContactName { get; set; } public string ContactPhoneNumber { get; set; } public string Relationship { get; set; } public string DoctorName { get; set; } public string DoctorPhoneNumber { get; set; } public string HospitalName { get; set; }     } public interface PCPWXMLDTOMapper     { Dictionary<string, string> GetPropertyXMLMap(); String GetMainXMLTagName();     } public class EmergencyContactXMLDTOMapper : PCPWXMLDTOMapper     { public Dictionary<string, string> GetPropertyXMLMap()         { return new Dictionary<string, string>             {                 { "FileNb", "XFileNb" },                 { "ContactName", "XContactName"},                 { "ContactPhoneNumber", "XContactPhoneNumber" },                 { "Relationship", "XRelationship" },                 { "DoctorName", "XDoctorName" },                 { "DoctorPhoneNumber", "XDoctorPhoneNumber" },                 { "HospitalName", "XHospitalName" },             };         } public String GetMainXMLTagName()         { return "EmergencyContact";         }     } } span.fullpost {display:none;}

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  • How to Maintain Strong Search Engine Rankings

    Search engines rankings are very important for anyone who has a website and wants to attract free online traffic. By achieving and maintaining high rankings your site will receive a steady flow of search engine traffic. Read more to see 3 SEO tips that will help you maintain a high website rank with minimal time and effort.

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  • Online Content Distribution is a Valuable SEO Tool

    Online content distribution is quite possibly one of the best and easiest ways to boost your search engine rankings if done properly. It is quite common however to overlook the importance this strategy can play in our optimization efforts. Read on to see 5 ways in which using content can boost your SEO efforts leading to even more exposure and traffic.

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  • Linked lists in Java - Help with writing methods

    - 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) 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. 1) 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. Here is my try : public int indexOf (int ch) { int count = 0; charNode pos = _head; if (pos == null ) { return -1; } for (pos = _head; pos!=null && pos.getData()!=ch; pos = pos.getNext()) { count = count + pos.getValue(); } if (pos==null) return -1; return count; } Time complexity = O(N) Space complexity = O(1) EDIT : I have a problem. I tested it in BlueJ and if the char ch doesn't appear it returns -1 but if it does, it always returns 0 and I don't understand why... I am confused. How can the compiler know that the value is the number of times the letter appears consecutively? Can I assume this because its given on the question or what? If it's true and I can assume this, then my code should be correct right? Ok I just spoke with my instructor and she said it isn't required to write it in the exercise but in order for me to test that it indeed works, I need to open a new class and write a code for making a list so that the the value of every node is the number of times the letter appears consecutively. Can someone please assist me? So I will copy+paste to BlueJ and this way I will be able to test all the methods. Meanwhile I am moving on to the next methods. 2) public int indexOf (int ch, int fromIndex) - returns the index in the string it is operated on of the first appeareance of the char "ch", as the search begins in the index "fromIndex". If the char "ch" doesn't appear in the string, returns -1. If the value of fromIndex doesn't appear in the range, returns -1. Here is my try: public int indexOf (int ch, int fromIndex) { int count = 0, len=0, i; charNode pos = _head; CharNode cur = _head; for (pos = _head; pos!=null; pos = pos.getNext()) { len = len+1; } if (fromIndex<0 || fromIndex>=len) return -1; for (i=0; i<fromIndex; i++) { cur = cur.getNext(); } if (cur == null ) { return -1; } for (cur = _head; cur!=null && cur.getData()!=ch; cur = cur.getNext()) { count = count + cur.getValue(); } if (cur==null) return -1; return count; } Time complexity = O(N) ? Space complexity = O(1) 3) public StringList concat (String str) - returns a string that consists of the string that it is operated on and in its end the string "str" is concatenated. Here is my try : public StringList concat (String str) { String str = ""; charNode pos = _head; if (str == null) return -1; for (pos = _head; pos!=null; pos = pos.getNext()) { str = str + pos.getData(); } str = str + "str"; return str; } Time complexity = O(N) Space complexity = O(1)

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  • A more reliable and more flexible sp_MSforeachdb

    - by AaronBertrand
    I've complained about sp_MSforeachdb before. In part of my "Bad Habits to Kick" series in 2009-10, I described how I worked around its sporadic inability to actually process all of the databases on an instance: http://sqlblog.com/blogs/aaron_bertrand/archive/2010/02/08/bad-habits-to-kick-relying-on-undocumented-behavior.aspx I lumped this in a "Bad Habit" category of relying on undocumented behavior, since - while the procedure does have rampant usage - it is, in fact, both undocumented and unsupported....(read more)

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  • How does Google App Engine remote_api work

    - by EasilyBaffled
    As I understand it, and I may be wrong, but GAE's remote_api allows one application to access another application's datastore. I'll be blunt I don't understand how this works. I have read the article that everyone likes to point to, but I still don't understand how you can link two applications. Can someone explain it to me, perhaps with a small example or just point me to a tutorial that does this?

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  • Desktop is too big for my screen

    - by user2829148
    I have an acer widescreen monitor set at 1024x768 running Ubuntu 12.04.4 precise, I have adjusted the resolution to match in display settings however the ubuntu side bar and files are all enlarged. its like it has zoomed in. I have read through all other related posts and cannot come up with a fix. The desktop was fine up until 3 days ago then it changed and I have no idea why, can someone help? Thanks

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  • Top10 List before Migrating to the Cloud

    - by Webgui
    Everybody's talking about putting their apps on the Cloud these days. But what do they really need to know when considering such a project?! Chevy (Fleischman) Weiss & Itzik Spitzen of Visual WebGui have put together a list of the 10 most important things you need to know and check before you start migrating your apps to the Cloud. Read the list >

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  • SQL Server AlwaysOn - Part 2 - Availability Groups Setup

    SQL Server has produced some excellent High Availability options, but I was looking for an option that would allow me to access my secondary database without it being read-only or in restoring mode. I need the ability to see transactions occur and query the secondary database. Get smart with SQL Backup ProPowerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school. Discover why.

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  • New SQL Monitor Custom Metric: Database Autogrowth

    This metric for Red Gate SQL Monitor measures the number of database autogrowth events (data file or log file) in the last hour. Too many autogrowth events causes disk fragmentation which requires a change in the autogrowth settings of a database. ‘Disturbing Development’Grant Fritchey & the DBA Team present the latest installment of the Top 5 hard-earned lessons of a DBA – read it now

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  • T-SQL Tuesday #34: HELP!

    - by merrillaldrich
    I owe my career to the SQL Server community, specifically the Internet SQL Server community, so this month’s T-SQL Tuesday is especially poignant. I changed careers “cold” about eight years ago, and, while I had some educational background in computer science, I had relatively little real-world DBA experience. Someone gave me a shot in the form of an entry level job, for which I am grateful, but I also had to make the argument to him that I would figure out whatever I needed to do to be successful...(read more)

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  • By what methods can I check information about a DVD video disc?

    - by chobok
    I have some DVD video discs that I am intending to sell. I would like to get information such as region, language, subtitles. Some of the discs are in another language which I cannot read, and some are from small publishers and do not have such information on the disc or the boxes. What methods can I use to access this information? Please list command line options, as well as common GUI based tools (eg VLC player).

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  • 5 Basic SEO Tips For Any Online Business

    Any SEO tips you can get should be considered of value to your online business since it increases your ability to attract search engine traffic. This is what search engine optimizing is all about, traffic! Read more to discover 5 simple yet highly effective tips you can use to insure you receive your fair share of search engine traffic.

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