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• Two files with the same name pointed by RUBYLIB ?

  - by JCLL

  I have two files with the same name "Foo.rb" in the directories pointed by my RUBYLIB env variable. This causes the interpreter to fail, when 'require "Foo"' is invoked. It cannot know which to use. How to solve this without renaming the files ?

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• Syntax proposition: readability of templated type declarations

  - by Knowing me knowing you

  I wonder if syntax as follows would be helpful in your opinion as a code readability improvent and self-commenting of code: std::map<std::string name, std::vector<int> scores> myMap; In this example it clearly says and no other comment is needed, what for we are using myMap variable. Looking forward to your opinions.

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• Adding folder to Eclipse classpath

  - by Paul

  Hello, When i develop a project i create a folder in my project called libs. And in this folder i place all the library jars that i use. Is there a way to add just the libs folder to the class path so that i do not have to add each individual jar? I was thinking something along the lines of a variable or creating a user library. Many thanks.

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• Building a decision-making game in jQuery? Where would I store data....

  - by redconservatory

  I built a slideshow/decision-making game in Flash but would like to try to redo it using jQuery. The slideshow part seems simple enough, however I have a series of user decisions that I'm not sure how to approach. In flash, if the user makes a decision, I would just store this in a variable or shared local objects, is this the same for jQuery? i.e. mix regular javascript variables with the jQuery?

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• Ruby hash value truthiness and symbols

  - by John Topley

  Could somebody please explain why the variable named foo remains true in the code below, even though it's set to false when the method is called? And why the symbol version behaves as expected? def test(options = {}) foo = options[:foo] || true bar = options[:bar] || :true puts "foo is #{foo}, bar is #{bar}" end >> test(:foo => false, :bar => :false) foo is true, bar is false I've only tried this using Ruby 1.8.7.

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• Parameterizing a SQL IN clause?

  - by Jeff Atwood

  How do I parameterize a query containing an IN clause with a variable number of arguments, like this one? select * from Tags where Name in ('ruby','rails','scruffy','rubyonrails') order by Count desc In this query, the number of arguments could be anywhere from 1 to 5. I would prefer not to use a dedicated stored procedure for this (or XML), but if there is some fancy SQL Server 2008 specific way of doing it elegantly, I am open to that.

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• how can i get the Model from an ViewResult in a asp.net mvc unittest?

  - by Michel

  Hi, i call a controller action in a unit test. ViewResult result = c.Index(null,null) as ViewResult; I cast the result to a ViewResult, because that is what i'm returning in the controller: return View(model); But how can i access this model variable in my unit test?

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• FBConnec how to use variables in FBStream Dialog?

  - by user337174

  I am using a FBStreamDialog to publish to a users wall in my iphone app i am creating. How can i publish the value of a variable into dialog.attachment? eg. i want a name to appear in the description section

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• How to get the textbox value in php?

  - by Nitz

  On my page. i have one textbox and one button. -- on the button click event. -- one function will be called. Now, How to get that value of textbox and store in php variable? this should be done in that function which we will call on button click.

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• Data types for validation

  - by nevalu

  How to create a new data type which to can check/validate its schema when is created a new variable (of that type)? By example, to validate if a string has 20 characters, I tried: {{{ // Format: 2006-01-12T06:06:06Z func date(str string) { if len(str) != 20 { fmt.Println("error") } } var Date = date() type Account struct { domain string username string created Date } }}} but it faills because Date is not a type.

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• ok help me only in this question

  - by davit-datuashvili

  ok help me only in this question we have m length of pattern and k variable here for (i=0; i <= k; ++i) R[i] = ~1; instead of k should be m yes? boolean[]R=new boolean[m+1]; look at this algorithm http://en.wikipedia.org/wiki/Bitap_algorithm

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• something like a python's triple-quote in F# (or C#)?

  - by tk

  I want to assign a xml code into a string variable. I can do this without escaping single or double-quotes by using triple-quote in python. Is there a similar way to do this in F# or C#?

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• Get the layout mode (landscape or portrait) of a pdf from php/linux

  - by Jonathan Hendler

  Given a PDF, how can one get the layout mode of a PDF (or relative width/height) using a PHP lib or linux command line tool? Using http://www.tecnick.com/public/code/cp%5Fdpage.php?aiocp%5Fdp=tcpdf which can set this variable on new PDFs, but for existing pdfs from adobe. Thought of converting pdfs to ps, or using gs in some other way - like converting it to an image first, and getting the width and height of that. Is this the best way?

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• Can SPSiteDataQuery search both List and Libraries?

  - by Rich Bennema

  I have the following code: SPSiteDataQuery query = new SPSiteDataQuery(); query.ViewFields = "<FieldRef Name=\"UniqueId\" />"; query.Webs = "<Webs Scope=\"SiteCollection\" />"; query.Query = "<Where<Eq><FieldRef Name='MyCustomField' /><Value Type='Boolean'>1</Value></Eq></Where>"; query.Lists = "<Lists BaseType=\"1\" />"; DataTable results = site.RootWeb.GetSiteData(query); This searches all the Document Libraries in the site collection, but I want to search all the Lists as well. Is there a way to set the Lists property to search both at the same time?

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• How can I process a Perl array element in a shell script?

  - by joe

  For example: In Perl: @array = (1,2,3); system ("/tmp/a.sh @array" ); In my shell script, how do I handle this array in shell script? How do I handle the shell script to receive the arguments, and how do I use that array variable in shell script?

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• Incompatible pointer type

  - by Boffin

  Hello. I have the function with following signature: void box_sort(int**, int, int) and variable of following type: int boxes[MAX_BOXES][MAX_DIMENSIONALITY+1] When I am calling the function box_sort(boxes, a, b) GCC gives me two warnings: 103.c:79: warning: passing argument 1 of ‘box_sort’ from incompatible pointer type (string where i am calling the function) 103.c:42: note: expected ‘int **’ but argument is of type ‘int (*)[11] (string where the function is defined) The question is why? Whether int x[][] and int** x (and actually int* x[]) are not the same types in C?

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• Push SVG String into Dom?

  - by Colin

  I have a javascript variable that basically looks like this: my_svg_image = '<circle cx="227.58331298828125" cy="102" r="3" style="fill:black;stroke-width:0" />'; It was loaded from my database. Is there a way I can parse that string and add it to the DOM with Javascript? I have svgweb set up, but don't see how I can get it to parse this string. Are there other libraries that might help?

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• Dynamically changing databases in SQL Server 2000

  - by spuppett

  At work we have a number of databases that we need to do the same operations on. I would like to write 1 SP that would loop over operations and set the database at the beginning of the loop (example to follow). I've tried sp_executesql('USE ' + @db_id) but that only sets the DB for the scope of that stored procedure. I don't really want to loop with hard coded database names because we need to do similar things in many different places and it's tough to remember where things need to change if we add another DB. Any thoughts Example: DECLARE zdb_loop CURSOR FAST_FORWARD FOR SELECT distinct db_id from DBS order by db_id OPEN zdb_loop FETCH NEXT FROM zdb_loop INTO @db_id WHILE @@FETCH_STATUS = 0 BEGIN USE @db_id --Do stuff against 3 or 4 different DBs FETCH NEXT FROM zdb_loop INTO @db_id END CLOSE zdb_loop DEALLOCATE zdb_loop

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• When not to use a private field

  - by coffeeaddict

  When should it be considered dangerous to use a private field all over the place in the methods of your class? I mostly just create the variable and set it to a default value like null. Then in my methods reference it and set it to an instance of that object type from the methods. I don't know if my question makes sense but let me know if it doesn't and I'll clarify.

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• C++ Scoping and ambiguity in constructor overloads

  - by loarabia

  I've tried the following code snippet in 3 different compilers (G++, clang++, CL.exe) and they all report to me that they cannot disambiguate the overloaded constructors. Now, I know how I could modify the call to the constructor to make it pick one or the other (either make explicit that the second argument is a unsigned literal value or explicitly cast it). However, I'm curious why the compiler would be attempting to choose between constructors in the first place given that one of the constructors is private and the call to the constructor is happening in the main function which should be outside the class's scope. Can anyone enlighten me? class Test { private: Test(unsigned int a, unsigned int *b) { } public: Test(unsigned int a, unsigned int b) { } }; int main() { Test t1 = Test(1,0); // compiler is confused }

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• C++: Question about freeing memory

  - by Martijn Courteaux

  On Learn C++, they wrote this to free memory: int *pnValue = new int; // dynamically allocate an integer *pnValue = 7; // assign 7 to this integer delete pnValue; pnValue = 0; My question is: "Is the last statement needed to free the memory correctly, completly?" I thought that the pointer *pnValue was still on the stack and new doesn't make any sense to the pointer. And if it is on the stack it will be cleaned up when the application leaves the scope (where the pointer is declared in), isn't it?

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• How to get full path of a given path

  - by Nam Gi VU

  I have a variable define as: set filePath=".\file.txt" How can I get the full path of this path? Please help!

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• how do i avoid this linking error ?

  - by Yogesh

  if i have defined a global variable(with initialization) in header file, and included this file in two file and try to compile and link, compiler gives linking error ----------------- >>headers.h #ifndef __HEADERS #define __HEADERS int x = 10; #endif >>1.c #include "headers.h" main () { } --------------------- >>2.c #include "headers.h" fun () {}

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• Array structure returned by Yii's model

  - by user1104955

  I am a Yii beginner and am running into a bit of a wall and hope someone will be able to help me get back onto track. I think this might be a fairly straight forward question to the seasoned Yii user. So here goes... In the controller, let's say I run the following call to the model- $variable = Post::model()->findAll(); All works fine and I pass the variable into the view. Here's where I get pretty stuck. The array that is returned in the above query is far more complex than I anticipated and I'm struggling to make sense of it. Here's a sample- print_r($variable); gives- Array ( [0] => Post Object ( [_md:CActiveRecord:private] => CActiveRecordMetaData Object ( [tableSchema] => CMysqlTableSchema Object ( [schemaName] => [name] => tbl_post [rawName] => `tbl_post` [primaryKey] => id [sequenceName] => [foreignKeys] => Array ( ) [columns] => Array ( [id] => CMysqlColumnSchema Object ( [name] => id [rawName] => `id` [allowNull] => [dbType] => int(11) [type] => integer [defaultValue] => [size] => 11 [precision] => 11 [scale] => [isPrimaryKey] => 1 [isForeignKey] => [autoIncrement] => 1 [_e:CComponent:private] => [_m:CComponent:private] => ) [post] => CMysqlColumnSchema Object ( [name] => post [rawName] => `post` [allowNull] => [dbType] => text [type] => string [defaultValue] => [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [_e:CComponent:private] => [_m:CComponent:private] => ) ) [_e:CComponent:private] => [_m:CComponent:private] => ) [columns] => Array ( [id] => CMysqlColumnSchema Object ( [name] => id [rawName] => `id` [allowNull] => [dbType] => int(11) [type] => integer [defaultValue] => [size] => 11 [precision] => 11 [scale] => [isPrimaryKey] => 1 [isForeignKey] => [autoIncrement] => 1 [_e:CComponent:private] => [_m:CComponent:private] => ) [post] => CMysqlColumnSchema Object ( [name] => post [rawName] => `post` [allowNull] => [dbType] => text [type] => string [defaultValue] => [size] => [precision] => [scale] => [isPrimaryKey] => [isForeignKey] => [autoIncrement] => [_e:CComponent:private] => [_m:CComponent:private] => ) ) [relations] => Array ( [responses] => CHasManyRelation Object ( [limit] => -1 [offset] => -1 [index] => [through] => [joinType] => LEFT OUTER JOIN [on] => [alias] => [with] => Array ( ) [together] => [scopes] => [name] => responses [className] => Response [foreignKey] => post_id [select] => * [condition] => [params] => Array ( ) [group] => [join] => [having] => [order] => [_e:CComponent:private] => [_m:CComponent:private] => ) ) [attributeDefaults] => Array ( ) [_model:CActiveRecordMetaData:private] => Post Object ( [_md:CActiveRecord:private] => CActiveRecordMetaData Object *RECURSION* [_new:CActiveRecord:private] => [_attributes:CActiveRecord:private] => Array ( ) [_related:CActiveRecord:private] => Array ( ) [_c:CActiveRecord:private] => [_pk:CActiveRecord:private] => [_alias:CActiveRecord:private] => t [_errors:CModel:private] => Array ( ) [_validators:CModel:private] => [_scenario:CModel:private] => [_e:CComponent:private] => [_m:CComponent:private] => ) ) [_new:CActiveRecord:private] => [_attributes:CActiveRecord:private] => Array ( [id] => 1 [post] => User Post ) [_related:CActiveRecord:private] => Array ( ) [_c:CActiveRecord:private] => [_pk:CActiveRecord:private] => 1 [_alias:CActiveRecord:private] => t [_errors:CModel:private] => Array ( ) [_validators:CModel:private] => [_scenario:CModel:private] => update [_e:CComponent:private] => [_m:CComponent:private] => ) ) [sorry if there's an easier way to show this array, I'm not aware of it] Can anyone explain to me why the model returns such a complex array? It doesn't seem to matter what tables or columns or relations are used in your application, they all seem to me to return this format. Also, can someone explain the structure to me so that I can isolate the variables that I want to recover? Many thanks in advance, Nick

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• What is so great about Visual Studio?

  - by Paperflyer

  In my admittedly somewhat short time as programmer, I have used many development environments on many platforms. Most notably, Eclipse/Linux, XCode/OSX, CLI/editor/Linux, VisualDSP/Blackfin/Windows and MSVC/Windows. (I used each one for several months) There are neat features in pretty much all of them. But somehow, I just can't find any in MSVC. Then again, so many people really seem to like it, so I am probably missing something here. So please tell me: What is so great about Visual Studio? Things I like: Refactoring tools in Eclipse Build error highlighting in XCode and Eclipse Edit-all-in-Scope in XCode Profiler in XCode Flexibility of Eclipse and CLI/editor Data plotting in VisualDSP Things I don't like Build error display in MSVC (not highlighted in code) Honestly, this is not meant to be a rant. Of course I am a Mac-head and biased as hell, but I have to use MSVC on the job, so I really want to like it.

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