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• Ok to implement backend/shared functionality for iPhone in JavaScript?

  - by John Wright

  Is it ok to use the Webkit Javascript engine to implement cross-platform, non-GUI backend functionality on the iPhone, iPad? In my case, I was interested in re-using Javascript code that I have that works on top of SQLite. I thought I would need to re-implement the logic in Obj-C but perhaps I could just share it and expose some hooks into Obj-C using JSCocoa or straight through JavaScript core. Is this legal per Apple guidelines?

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• With ARC why use @properties anymore?

  - by trapper

  In non-ARC code retained properties handily take care of memory management for you using the self.property = syntax, so we were taught to use them for practically everything. But now with ARC this memory management is no longer an issue, so does the reason for using properties evaporate? is there still any good reason (obviously other than providing public access to instance variables) to use properties anymore?

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• is it possible to extract all PDFs from a site

  - by deming

  given a URL like www.mysampleurl.com is it possible to crawl through the site and extract links for all PDFs that might exist? I've gotten the impression that Python is good for this kind of stuff. but is this feasible to do? how would one go about implementing something like this? also, assume that the site does not let you visit something like www.mysampleurl.com/files/

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• Did anyone manage to make katmouse work over vs 2010

  - by Silviu

  As you might know katmouse enables scrolling over non active windows. Which would be especially great in vs 2010 because now you can take source code windows to other monitors. But of course it does not work. Is there a trick to make WPF receive the right message?

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• Background image not showing up on IE8

  - by Rich Bradshaw

  I've read through other questions but to no avail - I really can't work this out. The site is http://bit.ly/cqEO53 (hoping to not have any search links to this page so shortening URL). The gradient on the footer looks great in non IE browsers, but fails to show in IE 7,8 and the dev preview. Any ideas?

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• Computer generated files - how do they work ?

  - by hory.incpp

  Hello, .... ‹BÿЃÀ‰D$Ç„$  ....... that's what happens when you open (notepad) such a file that I'm talking about How do algorithms decode that information and when does a program use/generate it ? Does some notepad-like application exist that open such files and transform them to readable code/data ? Any more information which will clarify about these files will be very helpful. Thank you for your time, P.S I'm not talking strictly about .exe files

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• How do I login to this site? [closed]

  - by Kevin Monk

  This site drives me crazy! I'm a web developer. I understand technology, I understand OpenID, but I don't have a clue how to login to this site with the username I created whilst asking another question unless I ask yet another question? Sure, this is a techie site but if I can't work out how to log in then what hope is OpenID to the rest of the non technical world?

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• Is it possible to keep mysql migration running without keeping connection open?

  - by taw

  ALTER TABLE can easily take a few days - and during this time there's a non-negligible chance of connection getting terminated due to network problems. Is it possible to start ALTER TABLE (or CREATE TABLE ... SELECT ...; or some other very long running query) and leave it running without keeping connection open all the time? (the obvious solution of screen + console mysql client won't easily work as there's no ssh running on that server, only mysqld).

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• Generic Type Parameter constraints in C# .NET

  - by activwerx

  Consider the following Generic class: public class Custom<T> where T : string { } This produces the following error: 'string' is not a valid constraint. A type used as a constraint must be an interface, a non-sealed class or a type parameter. Is there another way to constrain which types my generic class can use? Also, can I constrain to multiple types? E.G. T can only be string, int or byte

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• sql server - select top and bottom rows

  - by Adrian Faciu

  Hi, I'm using Sql Server 2005 and i'm trying to achieve something like: In the same select statement i want to get the first x rows and the last x rows. SELECT TOP(5) BOTTOM(5) Of course 'bottom' does not exist so i need other solution. I believe there is an easy and elegant solution that i'm not getting. Doing the select again with Group By Desc is not an option. Thanks.

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• how to write own serializer/deserializer?

  - by joseph

  Hello, I need to save objects - instances of classes - in my app like some filetype. How I can write own serializer/deserializer for it? Or exist some easier way how to save objects to some filetype? Using of io.serialization was commented as not so good solution for "real" app. Why?

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• SQL Server Index Naming Conventions

  - by Eric Ness

  Is there some standard way to name indexes for SQL Server? It seems that the primary key index is named PK_ and non-clustered indexes typically start with IX_. Are there any naming conventions beyond that for unique indexes?

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• How to order by column with null values last in entity framework

  - by devlife

  Does anyone know how to return an ordered list of strings with null values last? I have something like this: using(var context = new DomainEntities()) { var result = context.Users.OrderBy(u = u.LastName).ThenBy(u = u.FirstName); } My problem though is that this query returns null values before non-null values. Any thoughts?

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• Is it possible in .NET, using C#, to achieve event based asynchronous pattern without multithreading

  - by Jeffrey

  I am amazed by the architectural design of node.js and was wondering if C# is capable of such design: Asynchronous, event based / event loop, non-blocking IO without multithreading.

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• Complex Calculations

  - by mson

  What are the best tools (most efficient) available in .NET (C#) for calculating: integrals partial derivatives other non-trivial math Can people please comment on Mathematica and Matlab and their integration into C#?

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• How can I compare tables in two different databases using SQL?

  - by chama

  I'm trying to compare the schemas of two tables that exist in different databases. So far, I have this query SELECT * FROM sys.columns WHERE object_id = OBJECT_ID('table1') The only thing is that I don't know how to use the sys.columns to reference a database other than the one that the query is connected to. I tried this SELECT * FROM db.sys.columns WHERE object_id = OBJECT_ID('table1') but it didn't find anything. I'm using SQL Server 2005 Any suggestions? thanks!

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• Longest common substring from more than two strings - Python

  - by Nicolas Noël

  Hi, I'm looking for a python library for finding the longest common substring from a set of python strings. I'have read that it exist to way to solve this problem : - one using suffix trees - the other using dynamic programming. The method implemented is not important. Otherwise, it is important to have a implementation that can be use for a set of strings and not only two strings Thanks,

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• Rock Paper Scissors for arbitrary odd number of elements

  - by Barry Carter

  How do I efficiently create a rock-scissors-paper game for n elements, where n is any odd number =3. In other words, I want a non-transitive complete ordering of n elements such that each element is greater than (n-1)/2 other elements and each element is lesser than (n-1)/2 other elements.

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• Check if row exists, if not add it [MySQL]

  - by Steven

  I need to add a row to a MySQL database table but only if the row doesn't already exist. My database server just went down so I can't test this, but will this work as expected? INSERT INTO `blocks` (`block_file`,`settings_group`) VALUES ('announcements','announcement_settings') WHERE NOT EXISTS (SELECT `block_file`,`settings_group` FROM `blocks` WHERE `block_file`='announcements' AND `settings_group`='announcement_settings') It seems like sound logic. Is this a valid query or is there a better way of doing this?

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• Remove extra junk from C preprocessor?

  - by Brendan Long

  I'm trying to use the C preprocessor on non-C code, and it works fine except for creating lines like this at the top: # 1 "test.java" # 1 "<built-in>" # 1 "<command-line>" # 1 "test.java" The problem is that these lines aren't valid in Java. Is there any way to get the preprocessor to not write this stuff? I'd prefer not to have to run this through something else to just remove the first 4 lines every time.

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• SSH is looking in the wrong place for the public/private key pair on Windows

  - by Michael Morisy

  I'm trying to configure GIT on my Windows XP machine, but SSH keeps creating and looking for the public/private key pair in non-sensical places, e.g. /.ssh/id_rsa Is there a configuration file in the GIT Installation for Windows where I can switch this to my home directory, or another user defined place? By default, it offers to create new key pairs at //.ssh/id_rsa but that gives me the error "Could not create directory '//.ssh'." And when I'm able to find a directory I can create it in, GIT won't look there.

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• How to set page expiry date in SharePoint

  - by deverop

  A client of mine needs the ability to expire pages on specific dates. When that date arrives, the page should be inaccessible (possibly switch to a non-published state) and should not appear in all menus. Any idea how to go about this?

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• How do I quickly rename a mysql database (change schema name)?

  - by deadprogrammer

  Usually I just dump the database and reimport it with a new name. This is not an option for very big databases. Apparently RENAME {DATABASE | SCHEMA} db_name TO new_db_name; does bad things, exist only in a handful of versions, and is a bad idea overall. Oh, one more thing - this needs to work with InnoDB, which stores things very differently than MyISAM.

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• Jquery - Check for bad words on form submit?

  - by Probocop

  Does anybody know of a good Jquery solution to checking for swear words when a form is submitted? Basically I have a form which submits to Twitter, upon successfully passing a swear word check it will submit via ajax. I know how to do it in PHP (for non javascript enabled users), I did a foreach loop through an array of predefined bad words and checked them against what was submitted. How would I do a similar thing with Jquery? Thanks

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• Preferred Options for Webservice to Android

  - by Tim Almond

  I need to get an Android app to interface with an XML webservice (it's really just a request which returns XML), but as the data is large and includes some things I don't need (like a huge description block), I was thinking of transforming it via a server into a format that would be good for Android, and also to be reduced considering it will be used in a low bandwidth area. Does anyone have any suggestions for a good lightweight protocol? I'm especially thinking about libraries for Android that already exist for say REST or even delimited data.

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