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  • Boost singleton and restricted

    - by Ockonal
    Hello, I'm using boost singleton from thread/detail. There is in manual, that constructor should have signlature: boost::restricted. But I can't find any reference for this type in boost library. Why do I need in this and where I can find it?

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  • YQL How to use wildcard in XPath

    - by uku
    Hello, I have a malformed page to scrape, and have had a hard time getting the correct XPath for YQL. I can scrape individual fields that I need using, for example: //*[@id="cell_12345"] But what I really need to do is return all elements who's ID begins with cell_. Something like: //*[@id="cell_"*] How do I do this? Also, if anybody can point me to a good XPath reference it would be very helpful. Thanks!

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  • Error: Class 'Haml' not found... trying to use Haml (Kohaml) with Kohana

    - by Serhiy
    Can't for the life of me figure out what I'm doing wrong... Downloaded Kohaml from http://github.com/transphorm/kohaml Dropped it into modules/kohaml # My Bootstrap reference 'kohaml' => MODPATH.'kohaml', // kohaml Keep getting this error... (snapshot of the error and my modules folder) http://wellcommentedcode.com/stack_kohaml_question/ Any suggestions on what I might be doing wrong would be highly appreciated... thanks.

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  • What do I use if a CSS framework or grid is bad?

    - by johnny
    Reference this question: http://stackoverflow.com/questions/203069/what-is-the-best-css-framework-and-are-they-worth-the-effort Do I go back to the "old" way of manually creating a template or downloading free ones again. For a little bit I thought a grid was the new thing and the best, now it appears I am wrong after all and not sure of best practice. And, yes, I can write my own CSS but didn't want to create the infrastructure if I didn't have to.

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  • How can I randomly iterate through a large Range?

    - by void
    I would like to randomly iterate through a range. Each value will be visited only once and all values will eventually be visited. For example: class Array def shuffle ret = dup j = length i = 0 while j > 1 r = i + rand(j) ret[i], ret[r] = ret[r], ret[i] i += 1 j -= 1 end ret end end (0..9).to_a.shuffle.each{|x| f(x)} where f(x) is some function that operates on each value. A Fisher-Yates shuffle is used to efficiently provide random ordering. My problem is that shuffle needs to operate on an array, which is not cool because I am working with astronomically large numbers. Ruby will quickly consume a large amount of RAM trying to create a monstrous array. Imagine replacing (0..9) with (0..99**99). This is also why the following code will not work: tried = {} # store previous attempts bigint = 99**99 bigint.times { x = rand(bigint) redo if tried[x] tried[x] = true f(x) # some function } This code is very naive and quickly runs out of memory as tried obtains more entries. What sort of algorithm can accomplish what I am trying to do? [Edit1]: Why do I want to do this? I'm trying to exhaust the search space of a hash algorithm for a N-length input string looking for partial collisions. Each number I generate is equivalent to a unique input string, entropy and all. Basically, I'm "counting" using a custom alphabet. [Edit2]: This means that f(x) in the above examples is a method that generates a hash and compares it to a constant, target hash for partial collisions. I do not need to store the value of x after I call f(x) so memory should remain constant over time. [Edit3/4/5/6]: Further clarification/fixes.

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  • Force import module from Python standard library instead of PYTHONPATH default

    - by jrdioko
    I have a custom module in one of the directories in my PYTHONPATH with the same name as one of the standard library modules, so that when I import module_name, that module gets loaded. If I want to use the original standard library module, is there any way to force Python to import from the standard library rather than from the PYTHONPATH directory, short of renaming the custom module and changing every reference to point to the new name?

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  • SQL Query to truncate table in IBM DB2

    - by Cshah
    Hi, Can any one give me the syntax to truncate a table in IBM DB2. I m running the following command: truncate table tableName immediate; The eror is DB2 SQL Error: SQLCODE=-104, SQLSTATE=42601, SQLERRMC=table;truncate ;JOIN , DRIVER=3.50.152 Message: An unexpected token "table" was found following "truncate ". Expected tokens may include: "JOIN ".. SQLCODE=-104, SQLSTATE=42601, DRIVER=3.50.152 The syntax matches the one specified in the reference docs of IBM : http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=/com.ibm.db29.doc.sqlref/db2z_sql_truncate.htm

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  • playing videos in flash player

    - by raja
    hi all, i am working on a project. my project needs videos tv( Playing videos flash player). my reference site is http://www.zooweekly.com.au/zootube/index.htm. I need that type of flash player. is it passible to do it. can you guide me plz...

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  • MongoDB and visual C++ 2008 linker errors

    - by pedlar
    i'm trying to get the c++ client for mongodb working in visual studio 2008. i can reference the includes, but whenever i tell the linker about the mongodb .lib file i get the following error: "fatal error LNK1257: code generation failed". if visual studio can't find the .lib, then i get a bunch of unresolved externals errors. i'm really pretty lost at this point.

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  • ebook reader for programming books?

    - by Martin
    Are the current ebook readers good enough for reading programming books (containing diagrams, source-code, screenshots, and so on)? How good are the search functions or the possibilities to set bookmarks, to use a book as a reference? I'd like to hear opinions of ebook reader owners to help me decide whether or not I should buy an ebook reader. (I know this question already exists, but it's over one year old and new ebook readers are now available)

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  • Hibernate HQL with interfaces

    - by Benju
    According to this section of the Hibernate documentation I should be able to query any java class in HQL http://docs.jboss.org/hibernate/core/3.3/reference/en/html/queryhql.html#queryhql-polymorphism Unfortunately when I run this query... "from Transaction trans where trans.envelopeId=:envelopeId" I get the message "Transaction is not mapped [from Transaction trans where trans.envelopeId=:envelopeId]". Transaction is an interface, I have to entity classes that implement it, I want on HQL query to return a Collection of type Transaction.

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  • CompilationMode=Never & SessionState

    - by Nariman
    It seems that CompilationMode=Never doesn't permit Sessions to be properly wired. It first complains that the EnbaleSessionState directive is not allowed on this page. Explicitly assigning the System.Web.SessionState.IRequiresSessionState to the Page [1] avoids the null reference exceptions (around .Session access) but still doesn't persist or wire-up sessions correctly. Has anyone successfully used ASP.NET Sessions with CompilationMode=Never? Conceptually, why should these be disjoint?? [1] - http://msdn.microsoft.com/en-us/library/system.web.ui.compilationmode.aspx

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  • When am I supposed to use UITableViewCellSeparatorStyleSingleLineEtched?

    - by tewha
    I see a description of what UITableViewCellSeparatorStyleSingleLineEtched looks like in Apple's Class Reference, and can see it by running the application. But I can't find any mention of when it's appropriate to use UITableViewCellSeparatorStyleSingleLineEtched instead of UITableViewCellSeparatorStyleSingleLine. In other words, what does this etched line mean to the user? Can anyone explain?

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  • Simplest way to match array of strings to search in perl?

    - by Ben Dauphinee
    What I want to do is check an array of strings against my search string and get the corresponding key so I can store it. Is there a magical way of doing this with Perl, or am I doomed to using a loop? If so, what is the most efficient way to do this? I'm relatively new to Perl (I've only written 2 other scripts), so I don't know a lot of the magic yet, just that Perl is magic =D Reference Array: (1 = 'Canon', 2 = 'HP', 3 = 'Sony') Search String: Sony's Cyber-shot DSC-S600 End Result: 3

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  • How do I find, count, and display unique elements of an array using Perl?

    - by Luke
    I am a novice Perl programmer and would like some help. I have an array list that I am trying to split each element based on the pipe into two scalar elements. From there I would like to spike out only the lines that read ‘PJ RER Apts to Share’ as the first element. Then I want to print out the second element only once while counting each time the element appears. I wrote the piece of code below but can’t figure out where I am going wrong. It might be something small that I am just overlooking. Any help would be greatly appreciated. ## CODE ## my @data = ('PJ RER Apts to Share|PROVIDENCE', 'PJ RER Apts to Share|JOHNSTON', 'PJ RER Apts to Share|JOHNSTON', 'PJ RER Apts to Share|JOHNSTON', 'PJ RER Condo|WEST WARWICK', 'PJ RER Condo|WARWICK'); foreach my $line (@data) { $count = @data; chomp($line); @fields = split(/\|/,$line); if (($fields[0] =~ /PJ RER Apts to Share/g)){ @array2 = $fields[1]; my %seen; my @uniq = grep { ! $seen{$_}++ } @array2; my $count2 = scalar(@uniq); print "$array2[0] ($count2)","\n" } } print "$count","\n"; ## OUTPUT ## PROVIDENCE (1) JOHNSTON (1) JOHNSTON (1) JOHNSTON (1) 6

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  • How can I swap WCF deserializer from configuration

    - by JohnIdol
    I have a problem with WCF deserialization where the client hangs on the response for more than a minute. I'd like to try to swap different deserializers and see if it affects the behavior. Can I swap in/out DataContract/Xml serializers (are there any others?) from configuration, and if so can I do that with any binding, or is that out of control once the service reference is imported? Any help appreciated!

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  • Access <script> tag from codebehind

    - by Hoque
    I was trying to access existing within Head tag. What I was doing to achieve that, foreach (Control ctrl in Header.Controls) { Response.Write(lc.GetType() + "<br/>"); } It gives me the reference of "title", "meta" and "literal" control. How can I get the control and get the "src" attribute of that tag.

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  • Mercurial API and Extensions ressources

    - by Sly
    I want to write extensions for Mercurial. What are good resources such as tutorials, guides, API reference or maybe even a existing extension that is well commented and easy to lean from the source. So far, I have only found the short MercurialApi and WritingExtensions wiki pages.

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  • StackOverflowException in c# when no local variable in the function

    - by dnkulkarni
    when i do this static void Main() { Main(); } I receive stackoverflow exception. As i have read so far about C# they say ONLY local variable of value types (and short living ones) will go on stack. But here in the code there are no local variable to go on stack then what overflows it ? I know from assembly code line Perspective that reference to Main() will go on stack too ? Is that right ?

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  • Visual Studio 2010 - References Dialog Filter

    - by Sphynx
    Visual Studio 2010 adds a new feature to improve loading speed of references in "Add .NET Reference" tab. For example, when the target framework of project is 3.5, it displays only 3.5 assemblies in the list, and says "Filtered to: .NET Framework 3.5". This feature is quite annoying, as it makes impossible to find an older assembly, unless you change a target framework in compilation options. Is there any option to disable that filtering?

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