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• How to store data using core data in iphone?

  - by Warrior

  I am new to iphone development.I want to show a form a and store the contents in to a core data database after clicking the submit button.I have created a form.xcdatamodel and class events.h and events.m with reference to the apple docs.In some Sample codes the values are stored statically in the delegate class and they use core data delegate methods. But in my case the form view come after passing 2 views. I want to store the data entered here .How can i achieve it.Please help me out.Thanks.

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• how not to update timestamp field

  - by GOsha

  project is written on php. There is timestamp field in mysql it updates automatically. In one case I don`t need update this field. Can I gibe instruction not to update this field in this queries without getting timestamp value.

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• How to get the name of the method that caused the exception

  - by SKumar

  My code looks as below. try { _productRepo.GetAllProductCategories(); } catch (Exception ex) { //Do Something } I need a way to show the method name, suppose in the above case if any exception is thrown in the GetAllProductCategories() method, I need to get this method name i.e. "GetAllProductCategories()" as my result. Can any one suggest me how to do this?

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• Application self aware of external database record modifications.

  - by Khou

  How do you make your application aware that a database record was changed or created by an external application rather than the application itself? Do you add a special check sum to the database record or what do you do to stop external changes to the database? (in case it was hacked and the hacker decides to add a new record or change an existing database record)

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• MySQL- complex data query in a single statement

  - by yoda

  Hi, Consider the following structure : Ignore the table user_token. Now, imagine that you need to get all the roles related to an user, wich may be through it's related groups or directly related to him. In case the same role appears related to a group and the user directly, the role related to the user will prevail over the role given by the group. Is there any chance this could be done in a single query? Cheers!

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• how to invoke an activity of a library project from an android apps

  - by Austin

  I have an open source android code that I need to use in my android apps. It has all the source code as well as resource files, manifest files and class path. It can be compiled as a separate android apps. I have constraints for using the open source. 1. I can't change a single line of code. 2. I can't use it as a separate apps. These constraints are non negotiable. What I have done is I have compiled the open source as class library(in Eclipse: Project Properties-Android- Tick check box Is Library). This has resulted in generation of .class files(in bin) for the java files and resource files. This open source has an android activity that i want to open from my application. So I have linked the directory of these sets of class files in the source section of my java build path( in .classpath). I have declared the activity in my manifest file with proper action intent filters. Now when I am trying to call activity from my code, its not working. Cleaning and rebuilding doesn't help. However, if I build the open source project and my apps in the same workspace of eclipse and link the open source in my apps in exact same manner it works fine. I am not able to identify the difference. All settings seems to be same(all files are identical in both the cases). But only in the second case it works. I have tried it as jar file also. I have build the open source as project library and exported it into a jar file(excluding manifest file). But in that case I am getting the following error UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: already added: .... Conversion to Dalvik format failed with error 1 This I guess is coming because the android library(2.2) has been included twice in my apps( one for building my apps & another for building the open source). I dont know how to avoid this. Cleaning the project doesn't help. What i require is to use the open source and invoking it's activities in my apps without violating the constraints. If i can use the open source as bunch of .class files then great, or else any other way will do fine. Please look into it and let me know. Thanks

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• how to load c# object side by side

  - by mamu

  We have serialized value of some objects persisted. Now we want to make substantial changes to some objects. So what i want to do is load older version of object using old assembly then deserialize and serialize again with newer version of the object. I can have convert method which can transform old object to new one. i have been converting object on fly on deserializer but in this case it's almost new object with same name.

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• "this" in function parameter

  - by chris

  Looking at some code examples for HtmlHelpers, and I see declarations that look like: public static string HelperName(this HtmlHelper htmlHelper, ...more regular params ) I can't remember seeing this type of construct any where else - can someone explain the purpose of the "this"? I thought that by declaring something public static meant that the class did not need to be instantiated - so what is "this" in this case?

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• What's the most efficient way to pull culture information out of a resx's filename in c#?

  - by Lee Warner

  What's the most efficient way to pull culture information out of a resx's filename using C#? The solution should also handle there not being culture info in the file name (ie form1.resx). In that case a string assigned "Default" should be returned.

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• c# Best class to hold a list of values to look up after

  - by ase69s

  I have a list of values that i need to check against a constant list to know wheter they are present or not (one by one). Im using a dictionary buy it doesnt seem logical to have the value two times (key, value)...isnt there any class specialized for this case (and faster if possible)?

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• CF - How do i access a .gif in my Resources folder

  - by no9

  Hello. I have added a simple .gif file into Resources folder in my project. Now i have created a user control with pictureBox. How can i add the .gif to pictureBox.Image = new Bitmap (path). What is the path in this case? thanx !

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• Why do structures need to be told how big they are?

  - by GameTrainersWTF

  I've noticed that in c/c++ a lot of Win32 API structs need to be told how big they are. i.e someStruct.pbFormat = sizeof(SomeStruct) Why is this the case? Is it just for legacy reasons? Also any idea what "pb" stands for too?

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• php - How do I fix this illegal offset type error

  - by Steven

  I'm getting "illegal offset type" error for every iteration of this code. Here's the code in case anyone can help: $s = array(); for($i=0;$i<20;$i++){ $source = $xml->entry[$i]->source; $s[$source] += 1; } print_r($s) Any ideas. Thanks in advance.

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• slicing arrays in numpy/scipy

  - by user248237

  I have an array like: a = array([[1,2,3],[3,4,5],[4,5,6]]) what's the most efficient way to slice out a 1x2 array out of this that has only the first two columns of "a"? I.e., array([[2,3],[4,5],[5,6]]) in this case. thanks.

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• pointer uchar* question in opencv vc++ 2008

  - by kaushalyjain

  img_hsv is a Mat element of an hsv image! when i give cout<<*img_hsv.data+10; it gives true value of the pixel ie 79 as output. but when i assign uchar * a=img_hsv.data+10; it gives me some other value... can you please explain me why is this the case? thanks!

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• I want to count the number of occurences of each character in a string

  - by roe

  Ignore spaces, punctuation and anything else that is not a letter. Ignore the case of the incoming letters (so e.g. 'A' and 'a' should be counted together). The results of analysing this string should be added to any analysis performed by previous calls to this method.

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• Hibernate's version values in Grails app

  - by xain

  I'm 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 ?

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• Python: How to extract xml embedded in a html file?

  - by georgehu

  I have a html file with xml snipped embedded, the source code is pasted in the pastbin: http://pastebin.com/Hy0QaWk8 my task is to extract the text enclosed in the first textarea, which is a xml snippet, from the html. Without any change to the original snippet. I'm able to get it by using the BeautifulSoup, but it changes all the tag names into lower case.

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• Best way to get the highest sum from a Matrix (using Java but algorithm is the issue here)

  - by user294896

  Sorry I dont know the correct terminology to use but I have a 3x3 matrix like this 1 3 4 5 4 5 2 2 5 and I want get the highest score by picking a value from each row/column but I cant pick the same row or column more than once , so the answer in this case is 3 + 5 + 5 = 13 (row0,col1 + row1,col0 + row2,col2) 4 + 5 + 5 = 14 is not allowed because would have picked two values from col2 I'm using Java, and typically the matrix would be 15 by 15 in size. Is there a name for what Im trying to do, and whats the algorithm thanks Paul

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• Check in Javascript if a SSL Certificate is valid

  - by MB

  Hi. Is there a way to check in Javascript if given a host it's SSL certificate is valid? (non blocking) In my case I want to display: "you can also use https://.." if via javascript I can make a request to https://my_url without being asked to accept an untrusted certificate. Can this be done asynchonously? -- M.

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• How deep are your unit tests?

  - by John Nolan

  The thing I've found about TDD is that its takes time to get your tests set up and being naturally lazy I always want to write as little code as possible. The first thing I seem do is test my constructor has set all the properties but is this overkill? My question is to what level of granularity do you write you unit tests at? ..and is there a case of testing too much?

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• remove the id attribute from a div using jquery?

  - by getaway

  i want to remove the id attribute from this image: <img width="270" class="thumb" id="thumb" height="270" src="img/1_1.jpg" /> i tried doing this: $('img#thumb').RemoveAttr('id','none'); but its not remving it! thanks EDIT: $('img#thumb').attr('src', response); $('img#thumb').attr('id', 'nonthumb'); this deosnt load the picture, or in this case the src!! but when i remove the id attribute, it works fine

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• MySQL: Check if first character is _not_ A-Z

  - by dbemerlin

  I have to create an SQL Query to get all rows starting with a specific character, except if the parameter passed to the (PHP) function is 0, in that case it should get every row that does not start with A - Z (like #0-9.,$ etc). What is the easiest and fastest way to get those rows? DB: MySQL 5.1 Column: title

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• How to retrieve the integer value of an enum?

  - by Natrium

  I have an enum public enum Color { Red = 0, Blue = 1, Yellow = 2 } When I do this: Color color = Color.Blue; Console.Writeline(color.Value); I want to see it's integer-value (1 in this case, but it outputs "Blue" instead. How can I solve this? I use .NET 3.5.

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• How to detect working internet connection in C#?

  - by detariael

  I have a C# code that basically uploads a file via FTP protocol (using FtpWebRequest). I'd like, however, to first determine whether there is a working internet connection before trying to upload the file (since, if there isn't there is no point in trying, the software should just sleep for a time and check again). Is there an easy way to do it or should I just try to upload the file and in case it failed just try again, assuming the network connection was down?

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