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  • Android move data between activities

    - by Parhs
    Example I have 4 activities. A B C D A is a list of objects. B C D are used to add a new object. So A calls B then C then D . However C or D have button to 'add the object' When going up from B or C or D to activity A , A should have a List with these objects. Even if user tap back items should be 'saved' However I dont want to start a new Intent at C or D because i dont want user to go back to A and then click again add new item. I have been adviced to keep these data at application object. Is there any other suggestion ?

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  • fastest way to perform string search in general and in python

    - by Rkz
    My task is to search for a string or a pattern in a list of documents that are very short (say 200 characters long). However, say there are 1 million documents of such time. What is the most efficient way to perform this search?. I was thinking of tokenizing each document and putting the words in hashtable with words as key and document number as value, there by creating a bag of words. Then perform the word search and retrieve the list of documents that contained this word. From what I can see is this operation will take O(n) operations. Is there any other way? may be without using hash-tables?. Also, is there a python library or third party package that can perform efficient searches?

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  • is there any way to get country names from iPhone APIs?

    - by chiemekailo
    Hi, I want to provide a picker to the user to select a country. I've had a look in the NSLocale docs and I can get a list of all of the country codes supported on the device, which feels like a start: Code: NSArray *codes = [[NSArray alloc] initWithArray:[NSLocale ISOCountryCodes]]; But I can't work out if there is a programatic way to convert this array into country names... Ideally this list would be localized as well, i.e. show the country name in the user's preferred language. Can anyone point me in the right direction?

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  • DropDownList and ViewData

    - by Petko Xyz
    In my controller I have: Category x = new Category(1, "prva", 0); Category y = new Category(2, "vtora", 1); Category z = new Category(3, "treta", 1); List<Category> categories = new List<Category>(); categories.Add(x); categories.Add(y); categories.Add(z); ViewData["categories"] = categories; And in my view I have: <%= Html.DropDownList("categories")%> But I have an error: The ViewData item that has the key 'categories' is of type 'System.Collections.Generic.List`1[[Category, MvcApplication1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]' but must be of type 'IEnumerable'. Uggggghhh how to resolve this?

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  • Any method to denote object assignment?

    - by Droogans
    I've been studying magic methods in Python, and have been wondering if there's a way to outline the specific action of: a = MyClass(*params).method() versus: MyClass(*params).method() In the sense that, perhaps, I may want to return a list that has been split on the '\n' character, versus dumping the raw list into the variable a that keeps the '\n' intact. Is there a way to ask Python if its next action is about to return a value to a variable, and change action, if that's the case? I was thinking: class MyClass(object): def __init__(*params): self.end = self.method(*params) def __asgn__(self): return self.method(*params).split('\n') def __str__(self): """this is the fallback if __asgn__ is not called""" return self.method(*params)

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  • Android ratings and listviews

    - by puppetmaster04
    I'd like to add a list of reviews of books to my Android app. Basically what I'm after is a fixed rating using the RatingBar and a ListView containing the snippet of the review for each review. Once clicked I want the list item to expand and fill with the text of the full review. I have the content of the snippet, full text, and rating, but don't know how best to go about the layout. Any ideas are ok, I don't need full code, but I would much prefer to keep it to XML layout.

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  • Very basic database theory.

    - by John R
    I have a set of tables to show the relationship between organziations and supporters below. Although I have done some basic mySQL querries, I know very little about database 'design'. I plan to querry the database for: -a list of contributors to a specific organization... or, -a list of organizations that a specific suporter supports. The database tables for organiations and contributors may have other columns in the future and recieve a lesser amount of querries based on that information. A | X A | Y A | Z B | X B | Y C | X C | Z How should the tables be set up? I assume that there should be a third table, but there is still redundent information in the third table. Is there a better way of setting up the tables? +----+-------+ +-------------+----------+ +----+-------+ | id | org | | org | contr | | id | contr.| +----+-------+ +-------------+----------+ +----+-------+ | 1 | A | | 1 | 1 | | 1 | X | | 2 | B | | 1 | 2 | | 2 | Y | | 3 | C | | 1 | 3 | | 3 | Z | +----+-------+ | 2 | 1 | +----+-------+ | 2 | 2 | | 3 | 1 | | 3 | 3 | +-------------+----------+

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  • IEnumerable<SelectListItem> error question

    - by user281180
    I have the following code, but i`m having error of Error 6 foreach statement cannot operate on variables of type 'int' because 'int' does not contain a public definition for 'GetEnumerator' C:\Dev\DEV\Code\MvcUI\Models\MappingModel.cs 100 13 MvcUI How can I solve this? Note: string [] projectID; Class Employee { int id {get; set;} string Name {get;set;} } public IEnumerable<SelectListItem> GetStudents() { List<SelectListItem> result = new List<SelectListItem>(); foreach (var id in Convert.ToInt32(projectID)) { foreach( Employee emp in Project.Load(id)) result.Add(new SelectListItem { Selected = false, Text = emp.ID.ToString(), Value = emp.Name }); return result.AsEnumerable(); } }

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  • How do I select the item with the highest value using LINQ?

    - by mafutrct
    Imagine you got a class like this: class Foo { string key; int value; } How would you select the Foo with the highest value from an IEnumeralbe<Foo>? A basic problem is to keep the number of iterations low (i.e. at 1), but that affects readability. After all, the best I could find was something along the lines of this: IEnumerable<Foo> list; Foo max = list.Aggregate ((l, r) => l.value > r.value ? l : r); Can you think of a more better way?

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  • Is there a faster way to remove un-referenced controls from a Form's designer file?

    - by Eric
    I started looking into the designer file of one of my Forms and noticed that a lot of the old controls I thought I had deleted are still being instantiated but are not actually used on the form. Is there any easy way to clean up these controls from the designer file that are not being used? Right now I've printed out a list of all the private fields at the bottom of the designer file that reference the controls of the form. I'm going down the list one by one trying to determine if the control is actually used or not, and then deleting those that I find are not on the form. The document outline is useful for figuring out what controls are on the form, but this is still a rather tedious process. Does anyone have a better way?

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  • hibernate pagination mechanism

    - by haicnpmk44
    I am trying to use Hibernate pagination for my query (PostgreSQL ) i set setFirstResult(0), setMaxResults(20) for my sql query. My code like below: Session session = getSessionFactory().getCurrentSession(); session.beginTransaction(); Query query = session.createQuery("select id , customer_name , address from tbl_customers "); query.setFirstResult(0); query.setMaxResults(20); List<T> entities = query.list(); session.getTransaction().commit(); but when viewing SQL hibernate log, i still see full sql query: Hibernate: select customer0_.id as id9_, customer0_.customer_name as dst2_9_, customer0_.addres as dst3_9_ from tbl_customers customer0_ Why there is no LIMIT OFFSET in query of Hibernate pagination SQL log? Does anyone know about Hibernate pagination mechanism? I guess that Hibernate will select all data, put data into Resultset, and then paging in Resultset, right?

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  • trying to hide options from selectlist .. not working on chrom and ie

    - by ninja
    Hi, I have a select lists, which has lots of option. Depending on some input I want to hide few options from select list. To hide options from select list I have written jquery like $('#selectlist1 option').each(function(){ $(this).hide(); }) But this code seems to work only for firefox and its not working on chrom and ie. Whereas if I write $('#selectlist1').hide(); it works for all browser. Any pointer where should I look at?

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  • Cannot we use break statement in a lambda(C#3.0)

    - by Newbie
    Consider this List<int> intList = new List<int> { 1, 2, 3, 4, 5, 6 }; int j = 0; intList.ForEach(i => { if (i.Equals(1)) { j = i; break; } } ); Throwing error: No enclosing loop out of which to break or continue But the below works foreach(int i in intList) { j = i; break; } Why so. Am I making any mistake. Thanks

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  • trying to hide options from selectlist .. not working on chrome and ie

    - by ninja
    Hi, I have a select lists, which has lots of option. Depending on some input I want to hide few options from select list. To hide options from select list I have written jquery like $('#selectlist1 option').each(function(){ $(this).hide(); }) But this code seems to work only for firefox and its not working on chrome and ie. Whereas if I write $('#selectlist1').hide(); it works for all browser. Any pointer where should I look at?

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  • In Rails, how do I find records by "not equal"

    - by Mazonowicz
    I'm building an application that contains a bunch of projects that are at various stages, and I need to list the completed projects, or the projects that are at various other stages. So to list the completed projects, I name a scope; named_scope :current, :conditions => { :current_stage => "Completed" } and use; @projects = Project.current in my controller. But I how do I find all the projects at other stages? I thought it would involve != but I can't get that to work. Any pointers very much appreciated. Thanks a lot

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  • Javascript, jQuery - how signed actions to just created object?

    - by sebap123
    I am trying to make simple list with ability to add and delete elements. For now I am working on adding and performing a simple action on each of list elements object (existing and added). Unfortunately I have met some difficulties with that. I am able to modify objects that are created at the beginning, but not one added during "webpage working". First of all my idea was to add AJAX to this, but I don't think it is the easiest way. I think that some time ago (I don't remember where) I read how to make this work, but now I don't know. I would be really glad if someone would help me with this or at least give a link to good explanation of this. There is what I have done so far (well this is mostly just a scratch, but the main idea is in it): http://jsfiddle.net/sebap123/pAZ7H/ Thank you for all responses.

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  • How to apply Seq map function?

    - by netmatrix01
    Hello All, I been recently playing with F# . I was wondering instead of using a for loop to generate a sequence to element which are multiplied with every other element in the list how can I use a Seq map function or something similar to generate something like below. So for e.g. I have a list [1..10] I would like to apply a fun which generates a result something like [(1*1); (1*2);(1*3); (1*4); (1*5)......(2*1);(2*2);(2*3).....(3*1);(3*2)...] How can i achieve this ?. Many thanks for all you help.

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  • pass parameter from jsp to struts 2 action

    - by andrey_groza
    I have an e-store application and I want to pass item id to the action every time the button for that item is pressed. my jsp : <s:submit value="addToCart" action="addToCart" type="submit"> <s:param name="id" value="%{#cpu.id}" /> </s:submit> action: public class ProductsCPU extends BaseAction implements Preparable, SessionAware { private static final long serialVersionUID = 2124421844550008773L; private List colors = new ArrayList<>(); private List cpus; private String id; public String getId() { return id; } public void setId(String id) { this.id = id; } When I print id to console, it has the NULL value. What is the problem?

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