Search Results

Search found 7086 results on 284 pages for 'explain'.

Page 98/284 | < Previous Page | 94 95 96 97 98 99 100 101 102 103 104 105  | Next Page >

• difference between scope and namespace of ruby-on-rails 3 routing

  - by fayer

  i cant understand what the difference is between a namespace and a scope in the routing of ruby-on-rails 3. could someone please explain? namespace "admin" do resources :posts, :comments end scope :module => "admin" do resources :posts, :comments end thanks

  Read the article

• What is a good metaphor for c memory management?

  - by fsmc

  I'm trying to find a good metaphor to explain memory allocation, initialization and freeing in c to a non technical audience. I've heard pass-by-reference/value talked about quite well with postal service usage, but not so much for allocation/deallocation. So for I've thought about using the idea of renting a space might work, but I wonder if the SO crew can provide something better.

  Read the article

• named anchors not working in safari

  - by David

  Hi there, can anyone explain why named anchor tags would not work in safari but work fine in other browsers: ie, ff, opera, chrome. I have some links to different areas of the same page and nothing happens when clicking on them in safari only. All the other browsers mentioned take me to that area of the page. I have tried using both the id and the name attribute for the anchors but neither makes any difference.

  Read the article

• What does "program to interfaces, not implementations" mean?

  - by ajsie

  One stumbles upon this phrase when reading about design patterns. But I don't understand it, could someone explain this for me?

  Read the article

• C# Why does code compile fine when there is an ambiguous virtual method?

  - by Jimbo

  I have a class (Class B) that inherits another class (Class A) that contains virtual methods. Mistakenly, I omitted the override keyword when declaring a (supposed to be) overriding method in Class B. Class A public class ClassA{ public virtual void TestMethod(){ } } Class B public class ClassB : ClassA{ public void TestMethod(){ } } The code compiled without a problem. Can anyone explain why?

  Read the article

• is it better to retrive data using web service or directly from database in .net

  - by girish

  i was wondoring which thing is better from below two... first one- retrive data by creating webservice second one- create database connection from code behind call storeprocedure and retive data can anyone one explain how it differs.

  Read the article

• XmlDataProvider Source="pack://application:,,,/FinanceExplorer/Equity.xml"

  - by Graeme

  Can someone explain the syntax in the source attribute here? What the heck is "pack:" and "application:" and why 3 commas? I couldn't find any decent desciptions.

  Read the article

• grep options (unix)

  - by lego69

  hello everyone, can You explain please, can grep pick rows if at least one element from the list appeared, for exmaple grep "hello world" file1 grep must give me all rows which have or word hello or world or both of them, thanks in advance

  Read the article

• Is it possible that one of the mysql queries would interrupt?

  - by Donator

  I really didn't know how to call the topic, but I will try to explain it here. So, for example, I have 6 queries in one page. Is it possible, that first five of them would be completed and the last one wouldn't be? Is there any possibilities? If there is, what should I do? Hope you understood smth. Thanks.

  Read the article

• Ruby hash value truthiness and symbols

  - by John Topley

  Could somebody please explain why the variable named foo remains true in the code below, even though it's set to false when the method is called? And why the symbol version behaves as expected? def test(options = {}) foo = options[:foo] || true bar = options[:bar] || :true puts "foo is #{foo}, bar is #{bar}" end >> test(:foo => false, :bar => :false) foo is true, bar is false I've only tried this using Ruby 1.8.7.

  Read the article

• SQL - when should you use "with (nolock)"

  - by Andy White

  Can someone explain the implications of using "with (nolock)" on queries, when you should/shouldn't use it? For example, if you have a banking application with high transaction rates and a lot of data in certain tables, in what types of queries would nolock be okay? Are there cases when you should always use it/never use it?

  Read the article

• problems with 'free' in C

  - by lego69

  hello, can somebody please explain can I free const char* ? I allocated new memory using malloc and when I'm trying to free it I always receive an error incompatible pointer type thanks in advance something like this char* name="Arnold"; const char* str=malloc(stlen(name)+1); free(str); <- here bug

  Read the article

• How does the Built-in Bindings of Google Guice work?

  - by lony

  Hello, I tried Google Guice the first time and find it very nice. But, when I reached the part of Built-in Bindings I do not understand the examples. For me it looks like I can use it for logging like an interceptor, but I don't know how. Could someone of you explain this type of Binding and how I can use it? And maybe (if it's possible) use it for logging?

  Read the article

• parseInt('07')=='7', but parseInt('08')=='0'? why?

  - by KOHb

  Here's a simple script that gives a strange result: alert(parseInt('01')+' - '+parseInt('02')+' - '+parseInt('03')+' - '+parseInt('04')+' - '+parseInt('05')+' - '+parseInt('06')+' - '+parseInt('07')+' - '+parseInt('08')+' - '+parseInt('09')+' - '+parseInt('10')); I would expect it to give 1 - 2 - 3 and so on, but it gives me this (in FireFox, Chrome and IE6): 1 - 2 - 3 - 4 - 5 - 6 - 7 - 0 - 0 - 10 Can someone please explain me why?

  Read the article

• Hibernate reverse engineering

  - by EugeneP

  I have a structure where the main table is USER, other tables include CATEGORY (contains user_id). What I got after the standard reverse engineering procedure was: the class User contained a collection of categories, the class Category didn't contain the foreign key (user_id) but it did contain the User object. Why did it not contain the foreign key as a class property? And how do I join these two tables in HQL without that glue? HQL - please explain this part.

  Read the article

• Why 10675199.02:48:05.4775807 TimeSpan Maximum for CompilationSection?

  - by Alex

  I was looking at the metadata for System.Web.Configuration.CompilationSection, and noticed the following attribute on the TimeSpan BatchTimeout property: [TimeSpanValidator(MinValueString = "00:00:00", MaxValueString = "10675199.02:48:05.4775807")] Could someone explain why this is the allowed max value? TimeSpan itself has an upper limit, so why would there be another value validation, and why this number?

  Read the article

• compiling a c++ program including mysql

  - by wyatt

  I'm new to gcc, and trying to compile a c++ program which includes mysql.h using the command: g++ -o test test.cpp -L/usr/include/mysql -lmysqlclient -I/usr/include/mysql It works without issue, but I was wondering if someone could explain the arguments to me. I don't like using commands I don't understand. Thanks

  Read the article

• Problem with setProgressDrawable

  - by Martin

  I am having problem with setting a new Drawable to my ProgressBar. If I use the setProgressDrawable() inside onCreate() method it works great. But when I try to call the same method inside a Handler post callback it doesn't work and the progressbar disapears. Can someone explain this behaviour? How can I solve this problem?

  Read the article

• What are the differences between break and exit?

  - by srikanth rongali

  Even I used break() and exit() statements many times, I am bit confused between them. I need to know exact meaning of both, when we should use them. Please explain with small example. Thank you.

  Read the article

• C++ Why isn't call by reference needed for strcpy()

  - by Ribbs

  I have a homework assignment with a number of questions. One is asking why the strcpy() function doesn't need the call by reference operator for CStrings. I've looked through the book numerous times and I can't, for the life of me, find the answer. Can anyone help explain this to me? It is an array of sorts so I would think you would need the call by reference.

  Read the article

• GC generation 3 appearing in windbg

  - by Johnv2020

  I've a dump file of a process I'm running (trying to find a memory leak) One thing I've noticed is that when I dump the bigger objects via !do windbg tells me that they are GC generation 3 ?? All of these are byte arrays so when I look at all the byte arrays in the dump I can see GC generations 0, 1, 2 & 3. Could someone explain whats going on here as I thought there was only 3 generations of GC.

  Read the article

• Help me understand this Strange C++ code

  - by java lava

  Hi! This was a question in our old C++ exam. This code is driving me crazy, could anyone explain what it does and - especially - why? int arr[3]={10,20,30}; int *arrp = new int; (*(arr+1)+=3)+=5; (arrp=&arr[0])++; std::cout<<*arrp;

  Read the article

• ASP.NET C# Sending Information Back to Client While Processing Web Page

  - by user204588

  Hi, Not sure if I'll explain this properly but here goes. I having written an asp.net app using C# for the code behind. After the user makes some selection and hits the "run" button I pass off the processing to a dll written in C# but what I want is a way to periodically send information back to the client so they can see what's going on like how many records have been processed and things like that. How can I accomplish this? thanks

  Read the article

• C/C++ Pre vs Post decrement and increment operators performance difference

  - by TimK

  In some of my programs I have noticed that in some cases there is a difference in speed when using either the pre(++i or --i) and post(i++ or i--) decrement operators. Sometimes pre is faster and other times post is faster. I can't seem to figure out why. Could someone please explain this to me?

  Read the article

• What is output of the below expression in C?

  - by Surya

  unsigned char b = 10; b = b>>4 | b<<4; Please explain.

  Read the article

< Previous Page | 94 95 96 97 98 99 100 101 102 103 104 105  | Next Page >