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• Looking for trustworthy JPEG batch converter/resizer

  - by Simon_Weaver

  I have a batch of PNG files that I need to convert to JPEG. I'm looking for a free trustworthy utility that will give me the most optimal possible JPEGs. I've found some paid utilities and i HAVE Photoshop, but I want something dedicated that is made for the task and I dont want to accidentally download spy ware. I'm really surprised not to find this question already on StackOverflow, but please point me in the direction of any similar questions if they exist.

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• Is "campaign_$" a bad name for a SQL column?

  - by Summer

  PostgreSQL has allowed me to name a column "campaign_$". I like the name because it's short and to the point, and other potential names like "campaign_receipts" seem longer and less clear. BUT, I wonder if I'll eventually regret putting a $ symbol in a column name, either in PHP or in some other distant part of the architecture. Should I just stick to letters and underscores? Thanks!

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• How to get short URL inside my iPhone app?

  - by CastroAPZ

  I need to get a short URL from a long one (that I made inside my app). I think that I already read about this, but I couldn't find it anymore here in SO. Anyone has a piece of code or directions to point this out? Best Regards

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• Why abstract classes necessary?

  - by bala3569

  1.What is the point of creating a class that can't be instantiated? Most commonly to serve as a base-class or interface (some languages have a separate interface construct, some don't) - it doesn't know the implementation (that is to be provided by the subclasses / implementing classes) 2.Why would anybody want such a class? For abstraction and re-use 3.What is the situation in which abstract classes become NECESSARY?can anyone brief it with an example?

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• How to check if String value is Boolean type in Java?

  - by Ragnar

  I did a little search on this but couldn't find anything useful. The point being that if String value is either "true" or "false" the return value should be true. In every other value it should be false. I tried these: String value = "false"; System.out.println("test1: " + Boolean.parseBoolean(value)); System.out.println("test2: " + Boolean.valueOf(value)); System.out.println("test3: " + Boolean.getBoolean(value)); All functions returned false :(

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• Difference between dates when grouping in SQL

  - by CeejeeB

  I have a table of purchases containing a user_id and a date_of_purchase. I need to be able to select all the users who have made 2 purchases within 12 months of each other. The dates can be any point in time as long as they are less than 12 months apart. e.g. user_id date_of_purchase 123 01/Jan/2010 124 01/Aug/2010 123 01/Feb/2010 124 05/Aug/2008 In this example i want user_id 123

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• x, y, width, height of actual chart

  - by czerasz

  I wahnt to place a container (alpha red) on top of my chart like on the image. How to get the x, y (point A), width, height of this area? http://img88.imageshack.us/img88/4558/flexchart01.png

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• change background of an ImageView (the old image stays there!)

  - by nourdine

  how can I change the background of an ImageView from java? I have an ImageView and at a certain point I need to change the image that it displays (set in the styles). I tried to do it like this: placeHolder.setImageDrawable(myDrawb); but it looks like the old image remains there and it is partially covered but the new one (which in my case has different shape). hope you guys can help! cheers

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• Subdomain to folder htaccess

  - by mikelbring

  I am trying to point sub.domain.com to domain.com/app/*sub, but the farthest I can get is making it a redirection and I do not want it to redirect. Here is what I have, it works but it redirects it instead of staying on the subdomain, which is what I want. RewriteCond %{HTTP_HOST} ^(.*).example.com RewriteCond %{HTTP_HOST} !^www.example.com [NC] RewriteRule ^(.*)$ http://example.com/app/%1/$1 [L]

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• How to build javascript ad rotator?

  - by Geri Langlois

  I have a blog aggregator with many contributing blogs. I would like to distribute a snippet of javascript that contributors could place on their blogs. After placement the javascript would load a link and image that would point to the aggregator -- very much the same way that Google Adsense works but on a simpler and smaller scale. Can anyone provide or direct me to some sample code? Any help is much appreciated.

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• Formating issue in IE6

  - by user354534

  i All, I have deployed my site on internet and I am facing some formating issues, it's working fine in IE8, Firefox and Chrome but not in IE6. I have used asp.net 3.5, please let me know where I have done mistakes. http://www.anujtripathi.net/AboutMe.aspx and the same in image gallery menu, as I don't have 10 reputation point I can't paste another URL here. Thanks

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• Why Boolean And bool

  - by Asim Sajjad

  From the link ( which is mentioned in Question) my question is that microsoft says "The C# type keywords and their aliases are interchangeable" But why we need Aliases, From my point of view Boolean is more meaningful then bool and Int32 is more meaningful then int then why aliases ???

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• Open source live message plugin wanted

  - by Bill Li

  I need write a live messenger plugin which periodically read messages from a remote http server, and then change my signature(the short message after my name) accordingly. Can anyone point me to any open source project or materials where I can get started? Thanks.

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• What are the js recursion limits for Firefox, Chrome, Safari, IE, etc?

  - by Maciek

  I've got some Javascript code which uses fairly deep recursion and I'd like to find out what the recursion limits in the various browsers are (i.e. the point at which the error "too much recursion" will happen). Anyone have any solid numbers on this, by version?

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• Sockets: I/O Error 32

  - by Genesis

  Could someone please explain what an I/O Error 32 refers to in the context of a network socket? I have a multithreaded Socks5 server written using Poco SocketReactors and am getting this error when the server load reaches a certain point. The exception is thrown within my onReadable handlers at the same time across all threads which have connections associated with them. The only other thing I am doing within those threads is std::cout but I am not sure if this is a potential cause.

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• Programming language for opengl screenshot software

  - by mandril

  I need to develop a multiplatform software that takes screenshots from opengl games without affecting the game in performance, it will run in the background and will add a watermark to my screenshots. What language should i use? I thought of Perl / Python. Anyone can point me out something to start? Thanks!

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• How do you create domain.com/?stringhere without a .php extention

  - by matt

  I want to create a link like the following: http://www.myurl.com/?IDHERE What i want to be able to do is be able to goto the above link, and then pull whats after the ? (in this case IDHERE) and be able to use that information to perform a MySQL lookup and return a page. Can anyone point me into the right direction? please know this is using PHP not ASP

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• Programatically building an MSI

  - by pm_2

  I would like to create a C# program that creates an MSI based on a number of parameters. For example, based on user settings, certain files would be included, or runtime parameters set. Can anyone point me towards any documentation that might help, or give me an idea where I might start with something like this?

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• Using macro to check null values

  - by poliron

  My C code contains many functions with pointers to different structs as parameters which shouldn't be NULL pointers. To make my code more readable, I decided to replace this code: if(arg1==NULL || arg2==NULL || arg3==NULL...) { return SOME_ERROR; } With that macro: NULL_CHECK(arg1,arg2,...) How should I write it, if the number of args is unknown and they can point to different structs?(I work in C99)

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• Simple check for SELECT query empty result

  - by den-javamaniac

  Hi. Can anyone point out how to check if a select query returns non empty result set? For example I have next query: SELECT * FROM service s WHERE s.service_id = ?; Should I do something like next: ISNULL(SELECT * FROM service s WHERE s.service_id = ?) to test if result set is not empty?

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• Trie vs B+ tree

  - by Fakrudeen

  How does Trie and B+ tree compare for indexing lexicographically sorted strings [on the order some billions]? It should support range queries as well. From perf. as well as implementation complexity point of view.

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• create backup file descriptor?

  - by BobTurbo

  stdinBackup = 4; dup2(0, stdinBackup); Currently I am doing the above to 'backup' stdin so that it can be restored from backup later after it has been redirected somewhere else. I have a feeling that I am doing a lot wrong? (eg arbitrarily assigning 4 is surely not right). Anyone point me in the right direction?

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• jQuery apply functionality only to class and parent elements.

  - by kylex

  I have the following list: <ul> <li class="topCurrent">One <ul> <li>One-1 <ul> <li>One-1.1 <ul> <li class="current">One-1.1.1 <ul> <li>One-1.1.1.1</li> <li>One-1.1.1.2</li> <li>One-1.1.1.3</li> </ul> </li> <li>One-1.1.2</li> </ul> </li> <li>One-1.2</li> </ul> </li> <li>One-2</li> <li>One-3</li> </ul> </li> <li>Two <ul> <li>Two-1</li> <li>Two-2</li> </ul> </li> Using the following jQuery: $("ul li ul").hide(); $("ul li").hoverIntent( function(){ $(this).children('ul').slideDown('fast'); }, function(){ $(this).children('ul').slideUp('fast'); } ); What this does is hide all of the ul below the top level ul until there is a hover over it. What I would like to do is this: If an li has a class="current" I would like that structure to be open up until the point that current is hit. It would still allow the ul below it to be displayed on a hover, as well as any other ul's, but at no point would the parents of class="current" be hidden. Suggestions? This problem has been driving me crazy. Thanks!

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• What's wrong with my using argc/argv this way in c?

  - by user198729

  This works: int main( int argc, char *argv[]) { .... gtk_init(&argc, &argv); .... But this doesn't: int WINAPI WinMain (HINSTANCE p1, HINSTANCE p2, LPSTR argv, int argc) { .... gtk_init(&argc, &argv); .... Can someone point out what's wrong there?

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• Substitute alt tag with title tag using sed

  - by hardc0de

  I have a PCRE regex that looks like this s/(<input.+?)alt(=".+?".*?>)/$1title$2/ Can anybody help me with making that work on sed? Eventually can anybody point me to some guide/blog post/whatever that explains differences between sed regex and pcre?

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