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iPhone:How to make navigation top bar style to same like "Black Navigation Bar" programmatically?

- by Getsy

I have a Navigation project which has only a TableView. By default, i could see the navigation bar there when running the application. I want to change the navigation bar style to same like if we see in I.B there is one called "Top Bar" which has "Black Navigation Bar" style (Which shows Black navigation top bar but some kind of Gray shade will be there). I want the same in my navigation bar now, not any other color or style. How do i fix it? Note: 1. I used "self.navigationController.navigationBar.barStyle = UIBarStyleBlack;" , but it shows the navigation bar in utter black color. I don't want that, i want some kind of Gray shade in black, similar to "Top Bar" which has "Black Navigation Bar". I tried some tint color addition to the above, like "self.navigationController.navigationBar.tintColor = [UIColor grayColor];" but i observe the same utter black shows in navigation bar. I tried "navigationBar.barStyle = UIBarStyleBlackTranslucent;" but it doesn't fit and show with status bar properly. Instead it overlaps(hidden) half black with status bar and half black shows outside. Could someone teach me? Thank you.

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Setting up SVN (subvsersion) to manage our companies files, how to exclude large files from being ve

- by Roeland

Me and two other guys recently started our own web development company. We each work from our homes and have decided we want to keep one central location for all of our files. These files include word documents, spreadsheets, client files, designs.. etc. Anything pertaining to our company. I have a pretty solid internet connection and a windows 2008 server box sitting at home so I set up a subversion repository. Our file repository will look something like this. Clients Company A Design (photoshop files, wireframes, concepts) Documents ( logins, quotes, proposals etc) Site Backups Company B Design Documents Site Backups Prospects Company C Company D Our Company Our Website Documents (contract, operating procudres) My question is in regards to design files. The photoshop files that my designer works with range in sizes from 10mb to 100mb. I don't think we need to keep these files version-ed as this would eat up space incredibly fast. How do I go about controlling which files get version-ed, and which files are just stored. What I am thinking is that all documents need to be version-ed, and any files other then that should not be. Any help would be appreciated, thanks! Edit I am also curious whether this is the way to go. I just like this system since it keeps version of all my documents and at the same time. Also essentially I will have 3 backups in 3 different locations (3 local copies) so no need for backing it up. I am unsure of how svn would perform as purely a huge file repository.

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How do open source companies avoid harmful contributions and find the useful ones?

- by hory.incpp

Because wikipedia is open source, I can modify anything I want. But what happens if someone deletes, adds bad content, modifies useful content ? What does wikipedia do to prevent that ? The last question is available for any other open source software: linux, php etc. How do they know which contribution is useful and which is harmful ? Thank you.

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Access is refusing to run an query with linked table?

- by Mahmoud

Hey all i have 3 tables each as follow cash_credit Bank_Name-------in_date-------Com_Id---Amount America Bank 15/05/2010 1 200 HSBC 17/05/2010 3 500 Cheque_credit Bank_Name-----Cheque_Number-----in_date-------Com_Id---Amount America Bank 74835435-5435 15/05/2010 2 600 HSBC 41415454-2851 17/05/2010 5 100 Companies com_id----Com_Name 1 Ebay 2 Google 3 Facebook 4 Amazon Companies table is a linked table when i tried to create an query as follow SELECT cash_credit.Amount, Companies.Com_Name, cheque_credit.Amount FROM cheque_credit INNER JOIN (cash_credit INNER JOIN Companies ON cash_credit.com_id = Companies.com_id) ON cheque_credit.com_id = Companies.com_id; I get an error saying that my inner Join is incorrectly, this query was created using Access 2007 query design the error is Type mismatch in expression then i thought it might be the inner join so i tried Left Join and i get an error that this method is not used JOIN expression is not supported I am confused on where is the problem that is causing all this

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When is it possible to override top-level bindings in (R7RS) scheme?

- by Marc

I have read the current draft of the forthcoming R7RS scheme standard (small language), but I don't understand under which conditions it is not an error to redefine top-level bindings. I guess that it is possible to define or set! a binding that has been introduced at the top-level of a program a second time. But what about imported bindings from an external library? Is it possible to override these bindings by the standard? On page 26/27 of the report, it says: The top level of a program may also include import declarations. In a library declaration, it is an error to import the same identifier more than once with different bindings, or to redefine or mutate an imported binding with define, define-syntax or set!. However, a REPL should permit these actions. Does it mean that redefining is only an error when it does happen in libraries for imported bindings? I understand that it prohibits optimisations by compilers if the compiler does not know whether, say + still means the built-in addition or is any other user-specified error. But from this perspective, it does not make sense to restrict forbidding to rebind on the library level, when it would also make sense (at least) for imported bindings in programs. P.S.: As this is all about the environment of a scheme program: am I right in saying that environments are not first class citizens because one cannot get hold of the current environment? (Which, in turn, allows a compiled program to forget about the chosen names of the bindings.)

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Is there an API available that, given text, returns a list of companies with their ticker symbols?

- by smo7002

Ideally I would love to extract exactly what Google Finance's Get Quote functionality does with the predictive search. That's really all that I'm looking for. I don't want to store the data, I just want to be able to search company names/ticker symbols so that I can get the correct symbol. I already have specialized quote functionality in place. Also, the search functionality needs to be intuitive. I've looked through Google Finance API but haven't seen exactly what it is that I'm looking for. Any suggestions are appreciated. Thanks

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Does IE6 Really not Allow Me to set width/height from left/right/top/bottom???

- by viatropos

Building a site super quick and having it work on all my Mac browsers, I thought I'd take a gander on a friends old dell laptop with Windows XP and IE6. Nothing looks remotely correct. It's because I used lots of left/right/top/bottom (constraint) declarations to size elements proportionally to their parent's size (I didn't use percent sizes because the percents refer to the parent's size before margins and padding are applied, left/right/top/bottom refer to them after with position:absolute. I'm asking about that here :)). I've read lots these past few weeks on how horrible IE6 (and IE) is in general, but because of all the reasons people say to support it (large market share and the fear of installing better software), and because half the people in the company we're building a site for use IE6 (getting them to upgrade to Chrome slowly but surely), I thought if I could just get IE6 to render my constraints, that might help. So I am messing around with simple layouts here, and they work fine in my latest versions of Firefox, Safari, Chrome, and Opera, but IE6 is basically saying: If you haven't set a width or height on me, I'm assuming it's zero. But position:absolute; left:0px; right:0px; top:0px; bottom:0px; on a container that's width:1000px; height:1000px; should be the same as setting width:1000px; height:1000px on the child, no? Taking a quick look at the source for this, why won't IE6 render the constraint based absolutely positioned AND SIZED elements? (note: I will be messing around with that file for a while) Thanks

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If I had to create a server farm what should I do? (how others companies work?)

- by Michel

I have a business idea but this is not really my field so I'm trying to understand what I'm really dealing with. I have a general understanding of how a web farm works, I'm a web developer and I understand the technology behind it, but I'm curious to know specifically how a web farm is set up and which professionals are involved. Things to consider probably are the hardware, the power supply, the software managment, the cooling system and if possible the usage of green technology/power recycling. Basically, can you explain me how a web hosting company is structured and how it works? A big question, I know, but from what I already read here about the subject a lot of you know this stuff. Thanks for your time guys!

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SQL SERVER – Out of the Box – Activty and Performance Reports from SSSMS

- by pinaldave

SQL Server management Studio 2008 is wonderful tool and has many different features. Many times, an average user does not use them as they are not aware about these features. Today, we will learn one such feature. SSMS comes with many inbuilt performance and activity reports, but we do not use it to the full potential. Let us see how we can access these standard reports. Connect to SQL Server Node >> Right Click on it >> Go to Reports >> Click on Standard Reports >> Pick Any Report. Click to Enlarge You can see there are many reports, which an average users needs right away, are available there. Let me list all the reports available. Server Dashboard Configuration Changes History Schema Changes History Scheduler Health Memory Consumption Activity – All Blocking Transactions Activity – All Cursors Activity – All Sessions Activity – Top Sessions Activity – Dormant Sessions Activity - Top Connections Top Transactions by Age Top Transactions by Blocked Transactions Count Top Transactions by Locks Count Performance – Batch Execution Statistics Performance – Object Execution Statistics Performance – Top Queries by Average CPU Time Performance – Top Queries by Average IO Performance – Top Queries by Total CPU Time Performance – Top Queries by Total IO Service Broker Statistics Transactions Log Shipping Status In fact, when you look at the above list, it is fairly clear that they are very thought out and commonly needed reports that are available in SQL Server 2008. Let us run a couple of reports and observe their result. Performance – Top Queries by Total CPU Time Click to Enlarge Memory Consumption Click to Enlarge There are options for custom reports as well, which we can configure. We will learn about them in some other post. Additionally, you can right click on the reports and export in Excel or PDF. I think this tool can really help those who are just looking for some quick details. Does any of you use this feature, or this feature has some limitations and You would like to see more features? Reference : Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Optimization, SQL Performance, SQL Query, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, T SQL, Technology

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HTML Email template Table help needed

- by user1870691

I need help setting up an email newsletter template as one of the columns is not being displayed properly, the column containing heading 2 is not being displayed properly it is being displayed towards right side of the page instead of aligning with the template elements. Here is the code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> </head> <body>                                         <table border="0" align="center" cellpadding="0" cellspacing="0" class="cont-bg" bgcolor="#f1f1f1" style="background-color: #f1f1f1; padding: 27px 0px 0px; width: 100%; background-position: initial initial; background-repeat: initial initial;"> <tbody> <tr> <td align="center" valign="top" width="1133">                                                                                                                                  <table border="0" align="center" cellpadding="0" cellspacing="0" style="width: 650px;"> <tbody> <tr> <td align="left" valign="top">                                                                   <table border="0" align="center" cellpadding="0" cellspacing="0" style="width: 650px; height: 682px;"> <tbody> <tr> <td colspan="2" align="right" valign="top" mc:edit="view" style="font: normal 12px arial, helvetica, sans-serif; color: #000000; padding-bottom: 22px;">You can’t see this email?<a href="#"> View it in your browser.</a></td> </tr> <tr> <td width="287" align="left" valign="top" bgcolor="#ffffff" style="background: #fff;">                                    <p align="left"><br /> <img src="commstellogo.png" width="208" height="45" border="0" align="left" /></p> </td>  <td width="363" height="94" align="left" valign="middle" bgcolor="#ffffff" style="background: #fff;">                                      <table border="0" cellspacing="0" cellpadding="0" style="width: 340px;"> <tbody> <tr> <td align="right" valign="top" mc:edit="date" style="font: bold 18px arial, helvetica, sans-serif; color: #2f2f2f; text-transform: uppercase; padding-bottom: 8px;">01727 260 101</td> </tr> <tr> <td align="left" valign="top">                                                                                                                  <table border="0" cellspacing="0" cellpadding="0" style="width: 340px;"> <tbody> <tr> <td width="16" align="left" valign="top"><img mc:edit="h-icin" src="images/home-icon.png" width="16" height="19" alt="" /></td> <td width="64" align="left" valign="middle" mc:edit="h-text" style="font: bold 12px arial, helvetica, sans-serif; color: #414141; padding-left: 9px;"><a href="#" style="color: #414141;">Home</a></td> <td width="16" align="left" valign="top"><img mc:edit="s-icon" src="images/setting.png" width="16" height="19" alt="" /></td> <td width="79" align="left" valign="middle" mc:edit="s-text" style="font: bold 12px arial, helvetica, sans-serif; color: #414141; padding-left: 9px;"><a href="#" style="color: #414141;">Services</a></td> <td width="16" align="left" valign="top"><img mc:edit="a-icon" src="images/about-us.png" width="16" height="19" alt="" /></td> <td width="77" align="left" valign="middle" mc:edit="a-text" style="font: bold 12px arial, helvetica, sans-serif; color: #414141; padding-left: 9px;"><a href="#" style="color: #414141;">About us</a></td> <td width="18" align="left" valign="top"><img mc:edit="s-icon" src="images/support.png" width="16" height="19" alt="" /></td> <td width="54" align="right" valign="middle" mc:edit="s-text" style="font: bold 12px arial, helvetica, sans-serif; color: #414141; padding-left: 9px;"><a href="#">Contact</a></td> </tr> </tbody> </table> </td> </tr> </tbody> </table> </td> </tr> <tr> <td colspan="2" align="left" valign="top" height="548">                        <table border="0" cellspacing="0" cellpadding="0" style="width: 650px;"> <tbody> <tr> <td align="left" valign="top"><img mc:edit="banner-image" src="#" width="649" height="356" alt="" style="display: block;" /></td> </tr> <tr> <td align="left" valign="top" bgcolor="#2f2f2f" style="padding: 25px 0px 18px 20px; background: #2f2f2f;">                                                       <table border="0" cellspacing="0" cellpadding="0" style="width: 611px;"> <tbody> <tr> <td align="left" valign="top" mc:edit="banner-title" style="font: normal 24px arial, helvetica, sans-serif; color: #fff; padding-bottom: 8px;">Heading Area</td> </tr> <tr> <td align="left" valign="top" mc:edit="banner-text" style="font: normal 12px arial, helvetica, sans-serif; color: #fff; line-height: 18px; padding: 0px 0px 12px 4px;">Vivamus interdum mauris urna. Nullam egestas augue elit. Aliquam pretium elit varius metus hendrerit volutpat. <b>20% off</b> Vivamus interdum mauris urna. Nullam egestas augue elit. Aliquam pretium elit varius metus hendrerit volutpat.</td> </tr> <tr> <td align="left" valign="top"><a href="#><img mc:edit="banner-read-more" src="#" width="128" height="31" alt="" /></a></td> </tr> </tbody> </table> </td> </tr> </tbody> </table>            </td> </tr> </tbody> </table>               </td> </tr> <tr></tr> <tr> <td width="330" align="left" valign="top">                                                                                                                                  <table border="0" cellspacing="0" cellpadding="0" style="width: 320px;"> <tbody> <tr> <td align="left" valign="top"><img mc:edit="two-coulmn-image1" src="businesstelephone.png" width="320" height="172" alt="" style="display: block;" /></td> </tr> <tr> <td align="left" valign="top" bgcolor="#2f2f2f" style="padding: 15px 0px 18px 20px; background: #2f2f2f;">                                                                      <table border="0" cellspacing="0" cellpadding="0" style="width: 288px;"> <tbody> <tr> <td align="left" valign="top" mc:edit="banner-title" style="font: normal 24px arial, helvetica, sans-serif; color: #fff; padding-bottom: 5px;">Heading 2</td> </tr> <tr> <td align="left" valign="top" mc:edit="banner-text" style="font: normal 12px arial, helvetica, sans-serif; color: #fff; line-height: 18px; padding: 0px 0px 12px 4px;">Praesent viverra dui in orci pulvinar convallis. Nunc interdum, metus eget adipiscing rutrum, leo quam accumsan tellus, eget . It's easy and hassle free!</td> </tr> <tr> <td align="left" valign="top"><a href="#"><img mc:edit="read-more" src="#" width="128" height="31" alt="" /></a></td> </tr> </tbody> </table>    </td> </tr> </tbody> </table>                                                                             </td> <td width="320" align="left" valign="top">                                                                                                                                               <table border="0" cellspacing="0" cellpadding="0" style="width: 320px;"> <tbody> <tr> <td align="left" valign="top"><img mc:edit="two-coulmn-image2" src="mobiles.png" width="320" height="172" alt="" style="display: block;" /></td> </tr> <tr> <td align="left" valign="top" bgcolor="#2f2f2f" style="padding: 15px 0px 18px 20px; background: #2f2f2f;">                                                                      <table border="0" cellspacing="0" cellpadding="0" style="width: 288px;"> <tbody> <tr> <td align="left" valign="top" mc:edit="banner-title" style="font: normal 24px arial, helvetica, sans-serif; color: #fff; padding-bottom: 5px;">Heading 3</td> </tr> <tr> <td align="left" valign="top" mc:edit="banner-text" style="font: normal 12px arial, helvetica, sans-serif; color: #fff; line-height: 18px; padding: 0px 0px 12px 4px;">Nunc vel massa metus, vel varius mi. Sed sagittis consectetur nisi, sed imperdiet ipsum interdum non. Nunc consectetur odio et turpis eleifend semper. Pellentesque lorem purus</td> </tr> <tr> <td align="left" valign="top"><a href="#"><img mc:edit="read-more-1" src="images/read-more.png" width="128" height="31" alt="" /></a></td> </tr> </tbody> </table>                </td> </tr> </tbody> </table>                                                   </td> </tr>  <tr> <td> </td> </tr> </tbody> </table> </td> </tr> <tr> <td align="left" valign="top">           <table border="0" cellspacing="0" cellpadding="0" style="width: 687px;"> <tbody> <tr> <td align="center" valign="top" bgcolor="#ffffff" style="background: #fff; padding: 28px 0px 27px 0px;" width="687">                                      <table border="0" align="center" cellpadding="0" cellspacing="0" style="width: 675px;"> <tbody> <tr> <td align="center" valign="top" mc:edit="un-sp-text" style="font: normal 12px arial, helvetica, sans-serif; color: #737373; line-height: 18px;" width="675">                                    <p align="center"><b>Copyright © 2012 Company - Registered & Dales 07765116</b></p> </td> </tr> <tr> <td align="center" valign="top" mc:edit="c-right-text" style="font: bold 12px arial, helvetica, sans-serif; color: #737373; line-height: 18px;" width="675">                                                <p align="center">Company Address<br /> T: 023227 000 201  E: <a href="#">[email protected]</a>  W: <a href="#">company</a></p> </td> </tr> </tbody> </table> </td> </tr> <tr> <td align="center" valign="top" style="padding: 20px 0px 35px 0px;" width="687">                        <p align="center">If you wish to unsubscribe from this email, please click here</p> </td> </tr> </tbody> </table> </td> </tr> </tbody> </table>              </body> </html>

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Can I make Gimp 2.8.4 in OSx make the file I just opened be the top window automatically?

- by joe larson

When I open an image file in Gimp 2.8.4 in OSx Mountain Lion 10.8.4 via the File Open menu, it does not automatically make that image the top window, requiring that I then find that window via the Window menu. Very jarring UX! Is there a way to modify this behavior so that it behaves like most GUI applications and brings the document just opened to the fore? Is this a bug in Gimp 2.8? Interestingly in my Ubuntu 12.04 with Gimp 2.6.12 this is not a problem. Since I haven't used Gimp much at all until this month, I don't know if this is a new problem or not.

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Is it OK for the top level domain .FM not to provide the whois server? [closed]

- by Igor

just a question in the title Is it OK for the top level domain .FM not to provide the whois server? Are there any other TLD that behaves in the same manner? The question came out of the whois command answer $ whois dot.fm This TLD has no whois server, but you can access the whois database at http://www.dot.fm/whois.html EDIT Sorry for the "OK" in the question, yes it is quite vague. We're desiring to acquire the domain name in *.fm and my worry was about to be more suspected for the antispam filters and other services relying on the DNS and so. Is this observation have sense or not?

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Set top level directory to be handled by Perl?

- by Sam Lee

I have an Apache server set up to use mod_perl. I have it set up to handle all requests using a Perl module MyModule. Here is part of my httpd.conf: LoadModule perl_module modules/mod_perl.so <Directory /> Order Deny,Allow Allow from all </Directory> PerlModule MyModule <Location /> SetHandler modperl PerlResponseHandler MyModule </Location> This seems to work fine, except top level directory (ie. www.mysite.com/) is not being sent to MyModule. What's going wrong?

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Setting up a server with only subdomains, any connection to top level goes to main server on another IP?

- by Anagio

I'm developing a web app where users will have their own sub-domain to login to and use the application. I'm running wordpress for the main website to manage the public / front end. Our application is developed in zend framework. The zf project is currently in a subfolder on the main server. I'd like to place the zend framework project onto another server (different IP) and keep it separate from the the wordpress front end www.domain.com site. The zf application server will run nginx. I'm not sure how to setup a server to run strictly sub domains. Setting up the virtual hosts in the configuration file is no problem. To give the users username.domain.com. But what about the main default configuration file? How would that be configured since the top level domain is technically another server (wordpress) on another IP?

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Does /boot safe on top of a lvm LV (logical volume)?

- by fantoman

Title already asked the question. More specifically, I read in some documents that logical volumes are nice in general but not for /boot in a linux system. They say that bootloaders don't understand LVM volumes, so create a separate partition for /boot out of lvm. I recently installed Ubuntu server (9.10) for my home server, but by default /boot is created in the LVM. Everything is fine now, but I am not sure it is safe to use /boot in LVM. Second question is do I really need a physical partition (volume)(pv) for /boot or is it equally fine if I put it into a logical volume (lv) on top of a single shared volume group. Thanks in advance.

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Firefox 11.0 Right-Click Dropdown Menu (and Menu Options at Window Top) Flickering - Potential Bug?

- by nicorellius

About a week ago my Windows 7 machine starting exhibiting odd Firefox behavior. When I right click on something the drop-down menu flickers and when the mouse is hovering over a field, I can't really see it. This same behavior happens in other ways too, like in the top File, Edit , View, etc menus. I click them and they flicker, when I hover over them, and then they get obscured when I hover over the one I want. I did some research and didn't really find anything. Some people found similar behavior in applications THEY were building. But mine is a global problem. Happens on all sites, as far as I can tell. This is why I suspect it's my Firefox installation. I thought about reinstalling, but if there was another option, I'd like to explore that too. The behavior is not really capture-able, so I don't have anything except words to describe it. Sorry ;-( Thanks.

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How can I change the logo (not the site image) at the top of my SharePoint site?

- by EZE

I have recently been assigned as a SharePoint Administrator and while I have managed to figure many things out on my own, I seem to be stumped with how to change the logo/text located near the top of the page. I'm not referring to the site image, which is easy to change. I have SharePoint Designer and have mucked my way through various master pages and css files only to end up more confused than when I started. Can anyone, anywhere help me out here? I can't figure out which file and what lines need to be modified to change the logo. Thank you tons.

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Is this good code? Linked List Stack Implementation

- by Quik Tester

I have used the following code for a stack implementation. The top keeps track of the topmost node of the stack. Now since top is a data member of the node function, each node created will have a top member, which ideally we wouldn't want. Firstly, is this good approach to coding? Secondly, will making top as static make it a better coding practice? Or should I have a global declaration of top? #include<iostream> using namespace std; class node { int data; node *top; node *link; public: node() { top=NULL; link=NULL; } void push(int x) { node *n=new node; n->data=x; n->link=top; top=n; cout<<"Pushed "<<n->data<<endl; } void pop() { node *n=new node; n=top; top=top->link; n->link=NULL; cout<<"Popped "<<n->data<<endl; delete n; } void print() { node *n=new node; n=top; while(n!=NULL) { cout<<n->data<<endl; n=n->link; } delete n; } }; int main() { node stack; stack.push(5); stack.push(7); stack.push(9); stack.pop(); stack.print(); } Any other suggestions welcome. I have also seen codes where there are two classes, where the second one has the top member. What about this? Thanks. :)

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Minecraft Style Chunk building problem

- by David Torrey

I'm having some problems with speed in my chunk engine. I timed it out, and in its current state it takes a total ~5 seconds per chunk to fill each face's list. I have a check to see if each face of a block is visible and if it is not visible, it skips it and moves on. I'm using a dictionary (unordered map) because it makes sense memorywise to just not have an entry if there is no block. I've tracked my problem down to testing if there is an entry, and accessing an entry if it does exist. If I remove the tests to see if there is an entry in the dictionary for an adjacent block, or if the block type itself is seethrough, it runs within about 2-4 milliseconds. so here's my question: Is there a faster way to check for an entry in a dictionary than .ContainsKey()? As an aside, I tried TryGetValue() and it doesn't really help with the speed that much. If I remove the ContainsKey() and keep the test where it does the IsSeeThrough for each block, it halves the time, but it's still about 2-3 seconds. It only drops to 2-4ms if I remove BOTH checks. Here is my code: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Runtime.InteropServices; using OpenTK; using OpenTK.Graphics.OpenGL; using System.Drawing; namespace Anabelle_Lee { public enum BlockEnum { air = 0, dirt = 1, } [StructLayout(LayoutKind.Sequential,Pack=1)] public struct Coordinates<T1> { public T1 x; public T1 y; public T1 z; public override string ToString() { return "(" + x + "," + y + "," + z + ") : " + typeof(T1); } } public struct Sides<T1> { public T1 left; public T1 right; public T1 top; public T1 bottom; public T1 front; public T1 back; } public class Block { public int blockType; public bool SeeThrough() { switch (blockType) { case 0: return true; } return false ; } public override string ToString() { return ((BlockEnum)(blockType)).ToString(); } } class Chunk { private Dictionary<Coordinates<byte>, Block> mChunkData; //stores the block data private Sides<List<Coordinates<byte>>> mVBOVertexBuffer; private Sides<int> mVBOHandle; //private bool mIsChanged; private const byte mCHUNKSIZE = 16; public Chunk() { } public void InitializeChunk() { //create VBO references #if DEBUG Console.WriteLine ("Initializing Chunk"); #endif mChunkData = new Dictionary<Coordinates<byte> , Block>(); //mIsChanged = true; GL.GenBuffers(1, out mVBOHandle.left); GL.GenBuffers(1, out mVBOHandle.right); GL.GenBuffers(1, out mVBOHandle.top); GL.GenBuffers(1, out mVBOHandle.bottom); GL.GenBuffers(1, out mVBOHandle.front); GL.GenBuffers(1, out mVBOHandle.back); //make new list of vertexes for each face mVBOVertexBuffer.top = new List<Coordinates<byte>>(); mVBOVertexBuffer.bottom = new List<Coordinates<byte>>(); mVBOVertexBuffer.left = new List<Coordinates<byte>>(); mVBOVertexBuffer.right = new List<Coordinates<byte>>(); mVBOVertexBuffer.front = new List<Coordinates<byte>>(); mVBOVertexBuffer.back = new List<Coordinates<byte>>(); #if DEBUG Console.WriteLine("Chunk Initialized"); #endif } public void GenerateChunk() { #if DEBUG Console.WriteLine("Generating Chunk"); #endif for (byte i = 0; i < mCHUNKSIZE; i++) { for (byte j = 0; j < mCHUNKSIZE; j++) { for (byte k = 0; k < mCHUNKSIZE; k++) { Random blockLoc = new Random(); Coordinates<byte> randChunk = new Coordinates<byte> { x = i, y = j, z = k }; mChunkData.Add(randChunk, new Block()); mChunkData[randChunk].blockType = blockLoc.Next(0, 1); } } } #if DEBUG Console.WriteLine("Chunk Generated"); #endif } public void DeleteChunk() { //delete VBO references #if DEBUG Console.WriteLine("Deleting Chunk"); #endif GL.DeleteBuffers(1, ref mVBOHandle.left); GL.DeleteBuffers(1, ref mVBOHandle.right); GL.DeleteBuffers(1, ref mVBOHandle.top); GL.DeleteBuffers(1, ref mVBOHandle.bottom); GL.DeleteBuffers(1, ref mVBOHandle.front); GL.DeleteBuffers(1, ref mVBOHandle.back); //clear all vertex buffers ClearPolyLists(); #if DEBUG Console.WriteLine("Chunk Deleted"); #endif } public void UpdateChunk() { #if DEBUG Console.WriteLine("Updating Chunk"); #endif ClearPolyLists(); //prepare buffers //for every entry in mChunkData map foreach(KeyValuePair<Coordinates<byte>,Block> feBlockData in mChunkData) { Coordinates<byte> checkBlock = new Coordinates<byte> { x = feBlockData.Key.x, y = feBlockData.Key.y, z = feBlockData.Key.z }; //check for polygonson the left side of the cube if (checkBlock.x > 0) { //check to see if there is a key for current x - 1. if not, add the vector if (!IsVisible(checkBlock.x - 1, checkBlock.y, checkBlock.z)) { //add polygon AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.left); } } else { //polygon is far left and should be added AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.left); } //check for polygons on the right side of the cube if (checkBlock.x < mCHUNKSIZE - 1) { if (!IsVisible(checkBlock.x + 1, checkBlock.y, checkBlock.z)) { //add poly AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.right); } } else { //poly for right add AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.right); } if (checkBlock.y > 0) { //check to see if there is a key for current x - 1. if not, add the vector if (!IsVisible(checkBlock.x, checkBlock.y - 1, checkBlock.z)) { //add polygon AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.bottom); } } else { //polygon is far left and should be added AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.bottom); } //check for polygons on the right side of the cube if (checkBlock.y < mCHUNKSIZE - 1) { if (!IsVisible(checkBlock.x, checkBlock.y + 1, checkBlock.z)) { //add poly AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.top); } } else { //poly for right add AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.top); } if (checkBlock.z > 0) { //check to see if there is a key for current x - 1. if not, add the vector if (!IsVisible(checkBlock.x, checkBlock.y, checkBlock.z - 1)) { //add polygon AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.back); } } else { //polygon is far left and should be added AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.back); } //check for polygons on the right side of the cube if (checkBlock.z < mCHUNKSIZE - 1) { if (!IsVisible(checkBlock.x, checkBlock.y, checkBlock.z + 1)) { //add poly AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.front); } } else { //poly for right add AddPoly(checkBlock.x, checkBlock.y, checkBlock.z, mVBOHandle.front); } } BuildBuffers(); #if DEBUG Console.WriteLine("Chunk Updated"); #endif } public void RenderChunk() { } public void LoadChunk() { #if DEBUG Console.WriteLine("Loading Chunk"); #endif #if DEBUG Console.WriteLine("Chunk Deleted"); #endif } public void SaveChunk() { #if DEBUG Console.WriteLine("Saving Chunk"); #endif #if DEBUG Console.WriteLine("Chunk Saved"); #endif } private bool IsVisible(int pX,int pY,int pZ) { Block testBlock; Coordinates<byte> checkBlock = new Coordinates<byte> { x = Convert.ToByte(pX), y = Convert.ToByte(pY), z = Convert.ToByte(pZ) }; if (mChunkData.TryGetValue(checkBlock,out testBlock )) //if data exists { if (testBlock.SeeThrough() == true) //if existing data is not seethrough { return true; } } return true; } private void AddPoly(byte pX, byte pY, byte pZ, int BufferSide) { //create temp array GL.BindBuffer(BufferTarget.ArrayBuffer, BufferSide); if (BufferSide == mVBOHandle.front) { //front face mVBOVertexBuffer.front.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY + 1), z = (byte)(pZ + 1) }); mVBOVertexBuffer.front.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY) , z = (byte)(pZ + 1) }); mVBOVertexBuffer.front.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY) , z = (byte)(pZ + 1) }); mVBOVertexBuffer.front.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY) , z = (byte)(pZ + 1) }); mVBOVertexBuffer.front.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ + 1) }); mVBOVertexBuffer.front.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY + 1), z = (byte)(pZ + 1) }); } else if (BufferSide == mVBOHandle.right) { //back face mVBOVertexBuffer.back.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ) }); mVBOVertexBuffer.back.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY) , z = (byte)(pZ) }); mVBOVertexBuffer.back.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY) , z = (byte)(pZ) }); mVBOVertexBuffer.back.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY) , z = (byte)(pZ) }); mVBOVertexBuffer.back.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY + 1), z = (byte)(pZ) }); mVBOVertexBuffer.back.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ) }); } else if (BufferSide == mVBOHandle.top) { //left face mVBOVertexBuffer.left.Add(new Coordinates<byte> { x = (byte)(pX), y = (byte)(pY + 1), z = (byte)(pZ) }); mVBOVertexBuffer.left.Add(new Coordinates<byte> { x = (byte)(pX), y = (byte)(pY) , z = (byte)(pZ) }); mVBOVertexBuffer.left.Add(new Coordinates<byte> { x = (byte)(pX), y = (byte)(pY) , z = (byte)(pZ + 1) }); mVBOVertexBuffer.left.Add(new Coordinates<byte> { x = (byte)(pX), y = (byte)(pY) , z = (byte)(pZ + 1) }); mVBOVertexBuffer.left.Add(new Coordinates<byte> { x = (byte)(pX), y = (byte)(pY + 1), z = (byte)(pZ + 1) }); mVBOVertexBuffer.left.Add(new Coordinates<byte> { x = (byte)(pX), y = (byte)(pY + 1), z = (byte)(pZ) }); } else if (BufferSide == mVBOHandle.bottom) { //right face mVBOVertexBuffer.right.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ + 1) }); mVBOVertexBuffer.right.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY) , z = (byte)(pZ + 1) }); mVBOVertexBuffer.right.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY) , z = (byte)(pZ) }); mVBOVertexBuffer.right.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY) , z = (byte)(pZ) }); mVBOVertexBuffer.right.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ) }); mVBOVertexBuffer.right.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ + 1) }); } else if (BufferSide == mVBOHandle.front) { //top face mVBOVertexBuffer.top.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY + 1), z = (byte)(pZ) }); mVBOVertexBuffer.top.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY + 1), z = (byte)(pZ + 1) }); mVBOVertexBuffer.top.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ + 1) }); mVBOVertexBuffer.top.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ + 1) }); mVBOVertexBuffer.top.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY + 1), z = (byte)(pZ) }); mVBOVertexBuffer.top.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY + 1), z = (byte)(pZ) }); } else if (BufferSide == mVBOHandle.back) { //bottom face mVBOVertexBuffer.bottom.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY), z = (byte)(pZ + 1) }); mVBOVertexBuffer.bottom.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY), z = (byte)(pZ) }); mVBOVertexBuffer.bottom.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY), z = (byte)(pZ) }); mVBOVertexBuffer.bottom.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY), z = (byte)(pZ) }); mVBOVertexBuffer.bottom.Add(new Coordinates<byte> { x = (byte)(pX + 1), y = (byte)(pY), z = (byte)(pZ + 1) }); mVBOVertexBuffer.bottom.Add(new Coordinates<byte> { x = (byte)(pX) , y = (byte)(pY), z = (byte)(pZ + 1) }); } } private void BuildBuffers() { #if DEBUG Console.WriteLine("Building Chunk Buffers"); #endif GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOHandle.front); GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf(new Coordinates<byte>()) * mVBOVertexBuffer.front.Count), mVBOVertexBuffer.front.ToArray(), BufferUsageHint.StaticDraw); GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOHandle.back); GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf(new Coordinates<byte>()) * mVBOVertexBuffer.back.Count), mVBOVertexBuffer.back.ToArray(), BufferUsageHint.StaticDraw); GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOHandle.left); GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf(new Coordinates<byte>()) * mVBOVertexBuffer.left.Count), mVBOVertexBuffer.left.ToArray(), BufferUsageHint.StaticDraw); GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOHandle.right); GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf(new Coordinates<byte>()) * mVBOVertexBuffer.right.Count), mVBOVertexBuffer.right.ToArray(), BufferUsageHint.StaticDraw); GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOHandle.top); GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf(new Coordinates<byte>()) * mVBOVertexBuffer.top.Count), mVBOVertexBuffer.top.ToArray(), BufferUsageHint.StaticDraw); GL.BindBuffer(BufferTarget.ArrayBuffer, mVBOHandle.bottom); GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(Marshal.SizeOf(new Coordinates<byte>()) * mVBOVertexBuffer.bottom.Count), mVBOVertexBuffer.bottom.ToArray(), BufferUsageHint.StaticDraw); GL.BindBuffer(BufferTarget.ArrayBuffer,0); #if DEBUG Console.WriteLine("Chunk Buffers Built"); #endif } private void ClearPolyLists() { #if DEBUG Console.WriteLine("Clearing Polygon Lists"); #endif mVBOVertexBuffer.top.Clear(); mVBOVertexBuffer.bottom.Clear(); mVBOVertexBuffer.left.Clear(); mVBOVertexBuffer.right.Clear(); mVBOVertexBuffer.front.Clear(); mVBOVertexBuffer.back.Clear(); #if DEBUG Console.WriteLine("Polygon Lists Cleared"); #endif } }//END CLASS }//END NAMESPACE

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