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• How do I create a gradient button on an iPhone?

  - by jkp

  How can I create a button that looks like the one found in the screenshot below on an iPhone with the 3.0 SDK? It's a button that shows when connecting to a host iTunes library from the iTunes remote. Is it a case of writing a custom control or is this a stock style?

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• Compare text of two methods

  - by The Talking Walnut

  Is there a tool that can do a diff of two methods? I'm working on some legacy code that has several 100-200 line methods that contain a lot of duplication and I would like to abstract the duplication out. Being able to diff the two methods would be a huge help. In case it matters, I'm working with .NET and Visual Studio 2008.

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• C# empty statement

  - by dotnetdev

  In C#, I can write something like: using (new MyDisposableClass().MethodA()); The semicolon causes a compiler warning to be shown which states possible mistaken empty statement. I haven't run the above code but won't the method still be called? What uses is there of this type of coding convention? I saw another thread on here about this but I ask in case there areny differences now/therefore different replies. Thanks

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• How to evaluate the string in ruby if the string contains ruby command?

  - by Arun

  In my case, I was storing the sql query in my database as text. I am showing you one record which is present in my database Query.all :id => 1, :sql => "select * from user where id = #{params[:id]}" str = Query.first Now 'str' has value "select * from user where id = #{params[:id]}" Here, I want to parsed the string like If my params[:id] is 1 then "select * from user where id = 1" I used eval(str). Is this correct?

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• What are real world examples of when Linked Lists should be used?

  - by oo

  Another programmer was mentioning that they haven't found a use case for using a linked list data structure in any professional software in his career. I couldn't think of any good examples off the top of my head. He is mostly a C# and Java developer Can anyone give some examples where this was the correct data structure to solve a particular real world problem? Related: What is a practical, real world example of the Linked List?

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• Hiernate's version values in Grails app

  - by xain

  Hi, looking at a database dump file, and I see many records in various tables with their version number set in values other than 0 (even 94 in one case). I understand it has to do with hibernate locking strategy, but my concern is that today is Sunday, and the site has almost no visitors so is: is this normal ? Or is there a known hibernate bug or even some programming malpractice producing this ? Thanks in advance.

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• How to make nested child forms in C#.net

  - by abu

  In my windows form application I am using 10 forms.It is fine when only a parent and single child form are used at a time. But in case of multiple use of child form I am getting problem and not able to use them as child forms.They are not working as child form. Your any effort would be helpful for me. Thanking You In Advance

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• How to avoid error messagebox if .net is not installed on client system.

  - by Power-Mosfet

  Hi, I have a C# application which request .net 2 on client system. I like to replace the error message box in case if .net2 is not detected with ruuning an executable program which I have a written how do not request .net2.

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• can you use jquery datepickers renderCalendar with the multimonth plugin

  - by oo

  using jquery date picker you can render specific cells the way you want. (in my case i have a list of dates that i want to highlight as they are important days) i see that datepicker itself supports this here: http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/renderCalendarCallback.html but i dont see the multimonth implementation having an option for renderingcustomDates http://www.kelvinluck.com/assets/jquery/datePicker/v2/demo/datePickerMultiMonth3.html was this missed out in the implementation to expose this functionality?

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• Difference between Python Generators vs Iterators

  - by newToProgramming

  What is the difference between iterators and generators? Some examples for when you would use each case would be helpful.

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• Preferred Access point name

  - by rantravee

  Hi, I'm hoping that someone will explain to me what preferred access point name refers to in the android system , and what is it's role . Also I'd like to know if by messing with all APN (adding a suffix to the "apn" and "type" fields to disable 3G/EDGE/GPRS connections , and the deleting this suffix ) , the preferred APN can be disrupted. Also if it need special settings in case an APN manipulation is desired.

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• The Relationship Between Activities and View Objects - Android

  - by Greenhouse Gases

  I am attempting to learn how to develop on the Android platform but do not quite understand the relationship between Activities and Views, because according to the documentation an Activity is link to a UI object that the user can interact with, but if this is the case where does the whole idea of Views come in? There is probably a very basic explanation but I would appreciate a few pointers all the same. Thanks

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• Streaming videos from wifi + bonjour conforming cameras to iPhone

  - by gn-mithun

  Is it possible to stream videos from a bunch of video cameras or any device for that matter to iPhone if the devices conform to Bonjour. My concern was if the devices host their services over a wifi, how will my Iphone app manage to read and understand data(or video feed in this case) from different kinds of devices. Thank you

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• Tools for finding unused references

  - by Lawrence Johnston

  Are there any good tools or tricks for determining if there are any referenced but unused dependencies (such as dlls) in a project? My specific case is C# .net3.5.

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• more button in calendar

  - by yogsma

  Does anyone know jquery plugin for more button in month view of a calendar which shows all events of a particular date in case those events are not getting accommodated in that date. edit++ I want a jquery plugin for table row resizing. Month view of calendar is shown in table format and sometimes all the events of a particular day do not get accommodated in that table cell. So does anyone know a jquery plugin for table row resizing?

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• How can I implement incremental search on command line?

  - by florianbw

  I'd like to write small scripts which feature incremental search (find-as-you-type) on the command line. Use case: I have my mobile phone connected via USB, Using gammu --sendsms TEXT I can write text messages. I have the phonebook as CSV, and want to search-as-i-type on that. What's the easiest/best way to do it? It might be in bash/zsh/Perl/Python or any other scripting language.

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• Python - How is this snippet working?

  - by orokusaki

  For some reason this function confused me: def protocol(port): return port == "443" and "https://" or "http://" Can somebody explain the order of what's happening behind the scenes to make this work the way it does. I understood it as this until I tried it: Either A) def protocol(port): if port == "443": if bool("https://"): return True elif bool("http://"): return True return False Or B) def protocol(port): if port == "443": return True + "https://" else: return True + "http://" Is this some sort of special case in Python, or am I completely misunderstanding how statements work?

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• php: trim br tags from the beginning of a string?

  - by Thanos

  I know that: preg_replace('<br\s*\/?>', '', $string); will remove all br tags from $string... How can we remove all <br><br/><br /> tags only if they are in the very beginning of $string? ($string in my case is html code with various tags...)

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• Does the compiler optimize the function parameters passed by value?

  - by Naveen

  Lets say I have a function where the parameter is passed by value instead of const-reference. Further, lets assume that only the value is used inside the function i.e. the function doesn't try to modify it. In that case will the compiler will be able to figure out that it can pass the value by const-reference (for performance reasons) and generate the code accordingly? Is there any compiler which does that?

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• Compiling in g++ for gprof

  - by myahya

  I do not understand the documentation for gprof regarding how to compile your program for profiling with gprof. In g++, is it required to compile with the -g option (debugging information) in a addition to the -pg option or not. In each case I get different results, and I would like to see where the bottlenecks in my application are in release mode, not in debug mode, where many optimizations are left out by the compiler (e.g. inlining)

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• What's the Erlang/Haskell job market like in the U.S.?

  - by Krystof

  I've heard that Telecoms are the big source of Erlang jobs but I'm not sure how much of a market there is. How likely is it that someone could find a job in Erlang/Haskell if they decided to learn it? In my case I have a lot of programming experience in Java but am tired of Java and want to try something different.

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• Python `if x is not None` or `if not x is None`?

  - by orokusaki

  I've always thought of the if not x is None version to be more clear, but Google's style guide implies (based on this excerpt) that they use if x is not None. Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convention)?* *I'm referring to any singleton, rather than just None. ...to compare singletons like None. Use is or is not.

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• In C#, what happens when you call an extension method on a null object?

  - by tpower

  Does the method get called with a null value or does it give a null reference exception? MyObject myObject = null; myObject.MyExtensionMethod(); // <-- is this a null reference exception? If this is the case I will never need to check my 'this' parameter for null?

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• Flexible array member in C-structure

  - by Arpan

  Quoting from the C-std section 6.7.2.1, struct s { int n; double d[]; }; This is a valid structure declaration. I am looking for some practical use of this kind of syntax. To be precise, how is this construct any more or less powerful than keeping a double* as the 2nd element? Or is this another case of 'you-can-do-it-in-multiple-ways'? Arpan

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• Drupal User Permissions, Only Allow Specific Users to Edit Specific Pages

  - by jordanstephens

  I know I can set up a role to allow user's to only edit their own pages, then go mark the appropriate pages to be authored by the appropriate user. But then I run into multiple users per page problems. Is there any way that you can explicitly only allow a user to edit certain (perhaps multiple) pages, while accounting for overlap in the case that more than one user may be allowed to edit the same page? Thank you

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