Search Results

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

Page 78/284 | < Previous Page | 74 75 76 77 78 79 80 81 82 83 84 85  | Next Page >

• Compilation error: casting.

  - by Andrei Ciobanu

  Can somebody explain me why the following piece of code fails to compile. The error is: "Possible loss of precision." : byte a = 50; byte b = 40; byte sum = (byte)a + b; System.out.println(sum); Thank you.

  Read the article

• Calling class method through NULL class pointer

  - by Adil

  I have following code snippet: class ABC{ public: int a; void print(){cout<<"hello"<<endl;} }; int main(){ ABC *ptr = NULL: ptr->print(); return 0; } It runs successfully. Can someone explain it?

  Read the article

• Team Foundation Server Work Item customization -- Add a new Text Field

  - by Sunil Ramu

  May I know how to add a new custom text field in TFS to show the lastest revision number? Can anyone explain in deatil about Making use of work item’s XML and customize TFS work items. How to create custom window form control to add to work item.And installation of custom control runtime

  Read the article

• Why does the task name contain "now / 30"?

  - by Jaroslav Záruba

  In the video/PDF from "Data pipelines with Google App Engine" Brett puts "now / 30" into the task name noting that he will explain the reason later, but somehow he never does. :) http://www.youtube.com/watch?v=zSDC_TU7rtc#t=41m35 task_name = '%s-%d-%d' % (sum_name, int(now / 30), index) Do you have any idea about the reason? Does it have anything to do with the 7 day period in which one can't re-use task names? URL to the session page: http://tinyurl.com/3523mej

  Read the article

• Closure Tables - Is this enough data to display a tree view?

  - by James Pitt

  Here is the table I have created by testing the closure table method. | id | parentId | childId | hops | | | | | 270 | 6 | 6 | 0 | 271 | 7 | 7 | 0 | 272 | 8 | 8 | 0 | 273 | 9 | 9 | 0 | 276 | 10 | 10 | 0 | 281 | 9 | 10 | 1 | 282 | 7 | 9 | 1 | 283 | 7 | 10 | 2 | 285 | 7 | 8 | 1 | 286 | 6 | 7 | 1 | 287 | 6 | 9 | 2 | 288 | 6 | 10 | 3 | 289 | 6 | 8 | 2 | 293 | 6 | 9 | 1 | 294 | 6 | 10 | 2 I am trying to create a simple tree of this using PHP. There does not seem to be enough data to create the table. For example, when I look purely at parentId = 6: -Part 6 -Part 7 - ? - ? -Part 9 - ? - ? We know that parts 8 and 10 exists below Part 7 or 9, but not which. We know that part 10 exists at both 3 and 4 nodes deep but where? If I look at other data in the table it is possible to tell it should be: - Part 6 - Part 7 - Part 9 - Part 10 - Part 9 - Part 10 I thought one of the benefits of closure tables was there was no need for recursive queries? Could you help explain what I am doing wrong? EDIT: For clarification, this is a mapping table. There is another table called "parts" which has a column called part_id that correlates to both the parentId and childId columns in the "closure" table. The "id" column in the table above (closure) is just for the purposes of maintaining a primary key. It is not really necessary. The methods I have used to create this closure table is described in the following article: http://dirtsimple.org/2010/11/simplest-way-to-do-tree-based-queries.html EDIT2: It can have two and three hops. I will explain easier by assigning names to the items. Part 6 = Bicycle Part 7 = Gears Part 8 = Chain Part 9 = Bolt Part 10 = Nut Nut is part of Bolt. The Bolt and Nut combo exists directly within Bicycle and within Gears which is part of Bicycle. In relation to what method to use I have looked at Adjacency, Edges, Enum Paths, Closures, DAGS(networks) and the Nested Set Model. I am still trying to work out what is what, but this is an extremely complex component database where there are multiple parents and any modification to a sub-tree must propogate through the other trees. More importantly there will be insertions, deletions and tree views that I wish to avoid recursion during general use, even at the cost of database space and query time during entry.

  Read the article

• How does the Garbage-First Garbage Collector work?

  - by fahdshariff

  Hi Can someone explain how the G1 Garbage Collector works please? I haven't been able to find any comprehensive, easy-to-understand descriptions anywhere yet. Thanks

  Read the article

• What is meant by porting an application X to a platform Y ?

  - by Neeraj

  Pretty clear from the title itself, what is meant by porting an application X to a platform Y? Say for example I have an application X running on some OS, say Y, What do I do to port this application to another OS say Z? Does this mean rewriting a new application A for Operating system Z that necessarily imitates the behavior of application X on Operating System Y. Please explain.

  Read the article

• Calling class member through uninitialized class pointer

  - by Adil

  I have following code snippet: class ABC{ public: int a; void print(){cout<<"hello"<<endl;} }; int main(){ ABC *ptr = NULL: ptr->print(); return 0; } It runs successfully. Can someone explain it?

  Read the article

• lr parsing table

  - by flufferok

  Could any1 explain how can i transform ll(1) parsing table to lr(1) parsing table? Or are there any tables already for lr1 mathematical parsing(+,-,/,*,^)?

  Read the article

• Working with arrays passed byref

  - by Jason

  I would like for someone to explain this to me: function myFunction(array){ array = $.grep(array, function(n,i){return n > 1 }); } var mainArray = [1,2,3]; myFunction(mainArray); document.write(mainArray) // 1,2,3, but i'm expecting 2,3 but if i do something like array[3] = 4; in place of the $.grep line, i get 1,2,3,4. Shouldn't mainArray become the new array created by $.grep?

  Read the article

• Which languages are dynamically typed and compiled (and which are statically typed and interpreted)?

  - by Skilldrick

  In my reading on dynamic and static typing, I keep coming up against the assumption that statically typed languages are compiled, while dynamically typed languages are interpreted. I know that in general this is true, but I'm interested in the exceptions. I'd really like someone to not only give some examples of these exceptions, but try to explain why it was decided that these languages should work in this way.

  Read the article

• What is M language ?

  - by Praveen

  Hi All, Microsoft has M language. Can someone explain the use of M, why it is useful and what a programmer of C# can benifit from M.

  Read the article

• Tab Control Troubles

  - by VBeginner

  Best to explain with an example. TabControl has Tab1 and Tab2. I'm trying to make it so when Tab1 is selected, Button1 is visible and stays visible. When Tab2 is selected, Button1 is invisible and stays invisible. I need it to work when the Tab is clicked, not when the content area of the Tab is clicked. Thank you.

  Read the article

• Hidden feature in C: How to understand this expression

  - by nguyendat

  They said this expression is valid in C and that mean: call to a function (*(void(*)())0)(); Anyone can explain more detail how to understand this expression clearly Thanks p/s: I was try compiled but surprise: result is have no error, so that expression valid in C

  Read the article

• What is a RECURSIVE Function in PHP?

  - by Imran

  Can anyone please explain a recursive function to me in PHP (without using Fibonacci) in layman language and using examples? i was looking at an example but the Fibonacci totally lost me! Thank you in advance ;-) Also how often do you use them in web development?

  Read the article

• <?= ?> special tags in php

  - by heapzero

  can anybody please explain what are these special tags in php? <?= ?> I couldn't find it on google.

  Read the article

• Using .NET, how and why to use the memcached?

  - by fredzvt

  I hear much talk about memcached, but when briefly studied on it, I couldn't understand what advantages I can take instead of using the good old Dictionary<string, object> to cache my data in my applications. Can someone explain it to me?

  Read the article

• Error in ternary expression

  - by Bipul

  Consider the following code which shows compile time error : #include <stdio.h> int main(int argc, char** argv) { int x=5,y=0,z=2; int a=z?x,y?x:(y); // but z?x,y?x:y:z is not showing any error printf("%d",a); return 0; } Please help me explain the reason why z?x,y?x:y:z is not showing any error?

  Read the article

• Why reduce the size of the Java JVM thread stack?

  - by djangofan

  I was reading an article on handling Out Of Memory error conditions in Java (and on JBoss platform) and I saw this suggestion to reduce the size of the threadstack. Can anyone explain how "reducing" the size of threadstack will help with a max memory error condition? http://community.jboss.org/wiki/OutOfMemoryExceptions

  Read the article

• Setup Turtoise SVN+SubWeaver for existing dreamweaver site?

  - by John Isaacks

  I installed both Turtoise SVN and SubWeaver, I now have a SubWeaver drop down menu on the top of dreamweaver. I read a lot of the help files which basically explains how the system works and explains Copy-Modify-Merge. I am trying to set this up for my already existing dreamweaver site though, I am not finding information on how to do that. Can anyone explain this to me? Thanks!

  Read the article

• What is the advantage of the 'src/main/java'' convention?

  - by Chris

  I've noticed that a lot of projects have the following structure: Project-A bin lib src main java RootLevelPackageClass.java I currently use the following convention (as my projects are 100% java): Project-A bin lib src RootLevelPackageClass.java I'm not currently using Maven but am wondering if this is a Maven convention or not or if there is another reason. Can someone explain why the first version is so popular these days and if I should adopt this new convention or not? Chris

  Read the article

• How to create-edit-remove excel files?

  - by Giuseppe

  i am doing a project that has some simple values(login,password,name,age). I was searching on the internet how to create an excel file on Visual C++, and i cant undestand it . I just want the simple way, i just want to see on my excel files 2 colums one having some login codes of my program and on the other the passwords. My programing level its not really high and im not an english speaker, so id like you guys to explain a bit or give me something simple. Thanks for your time

  Read the article

• The order of a SQL Select statement without Order By clause

  - by Yousui

  As I know, from the relational database theory, a select statement without an order by clause should be considered has not particular order. But actually in SQL Server and Oracle (I've tested on those 2 platforms), if I query from a table without an order by clause multiple times, I always get the results in the same order. Does this behavior can be relied on? Anyone can help to explain a little? Thanks!

  Read the article

• function calling with pre decrement condition in if

  - by thulasi

  void display(int a) { printf("\n%d",a); if(--a) display(a); printf("\n%d",a); } main() { display(4); } Please explain the above program. i can't understand.what is the output.ya sir i got oupt like this 4 3 2 1 0 1 2 3 how is it sir

  Read the article

• Rewrite rule index.php?/controller/method/param to /controller/method/param

  - by streetparade

  I need a rewrite rule for this url http://localhost/~user/frame/lib/index.php?/controller/method/12/22/ How can i rewrite it that i can call it like this http://localhost/~user/frame/lib/controller/method/12/22/ What is the rewrite rule for the above problem? I hope i could explain my question clear.

  Read the article

< Previous Page | 74 75 76 77 78 79 80 81 82 83 84 85  | Next Page >