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• Inspecting values using the debugger in C#

  - by JC

  How do I inspect the return value of this GetItems() function using the debugger? Do I have to create a local variable for the results to accomplish this? foreach (string item in GetItems()) { // some code } private List<string> GetItems() { // return some list }

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• Is a string formatter that pulls variables from its calling scope bad practice?

  - by Eric

  I have some code that does an awful lot of string formatting, Often, I end up with code along the lines of: "...".format(x=x, y=y, z=z, foo=foo, ...) Where I'm trying to interpolate a large number of variables into a large string. Is there a good reason not to write a function like this that uses the inspect module to find variables to interpolate? import inspect def interpolate(s): return s.format(**inspect.currentframe().f_back.f_locals) def generateTheString(x): y = foo(x) z = x + y # more calculations go here return interpolate("{x}, {y}, {z}")

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• PHP Code Problem...

  - by aamir Fayyaz

  function check_login($array_val) { $strQury = "Select * from tblsignup where usr_email ='".$array_val[0]."' and usr_password = '".$array_val[1]."'" ; $result = mysql_query($strQury); $row_user = mysql_fetch_array($result); if(mysql_num_rows($result)>0) { $msg = "true"; } else { $msg = "false"; } return $msg ; } The return value is Object id #1true???? what is object id#1?

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• How to optimize perl code for directory exists or not ?

  - by SCNCN2010

  sub DirectoryExists { my $param = shift; # Remove first element of the array shift @{$param}; # Loop through each directory to see if it exists foreach my $directory (@{$param}) { unless (-e $directory && -d $directory) { return 0; } } # True return 1; } is there any way to optimize this code ? is there any good way to optimize this code

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• Erlang rb module

  - by Justin

  When looking up messages in a sasl log using rb:list() or rb:show(), rb seems to dump the output in the console and return 'ok'; is there any way to configure rb to get it to return the actual log message ? Thanks

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• How can I retrieve all the returned variables from a function?

  - by user1447941

  import random def some_function(): example = random.randint(0, 1) if example == 1: other_example = 2 else: return False return example, other_example With this example, there is a chance that either one or two variables will be returned. Usually, for one variable I'd use var = some_function() while for two, var, var2 = some_function(). How can I tell how many variables are being returned by the function?

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• read the dictionary value from array

  - by ben martin

  CALORIES = \ { 'Beef' : 200, \ 'Chicken' : 140, \ } class Food(): __slots__ = ( 'cal' # Calories ) def mkFood( name ): """Create and return a newly initialized Food item""" result = Food() result.cal = calorie in dict(CALORIES[1]) return result Is that a proper way to the value of the target item in Calories? Like getting 200, 140, such like that. result.cal = calorie in dict(CALORIES[1])

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• classic asp comparison of comma seperated lists

  - by Reiwoldt

  Hello, I have two comma seperated lists:- 36,189,47,183,65,50 65, 50, 189, 47 the question is how to compare the two in classic ASP in order to identify and return any values that exist in list 1 but that don't exist in list 2 bearing in mind that associative arrays aren't available. e.g. in the above example I would need the return value to be 36,183 Thanks

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• Common elements comparison between 2 lists.

  - by Daniel

  def common_elements(list1, list2): """ Return a list containing the elements which are in both list1 and list2 >>> common_elements([1,2,3,4,5,6], [3,5,7,9]) [3, 5] >>> common_elements(['this','this','n','that'],['this','not','that','that']) ['this', 'that'] """ for element in list1: if element in list2: return list(element) Got that so far, but can't seem to get it to work! Thanks

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• How fast 3D rendering a still image per client request, in server can be made?

  - by user1767797

  I am trying to make a service that needs to quickly render simple 3D scenes on the server, and then return them as a JPEG. It should be able to accommodate mass users (client) so that it serve rendered image per client request. User-HTML-Server-(perhaps renderfarm)-Result display. Is current technology able to give a return really quickly like in 5 seconds, after it renders 3D scene like clothes ?? Thanks.

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• Is there a simple way to determine type size in C#?

  - by archimedes

  Is there a way to say something like: sizeof(type)? Or type.Size? Right now I am looking at using code like: if (type.Equals(typeof(int))) return sizeof(int); else if (type.Equals(typeof(long))) return sizeof(long); etc, etc, for every single data type. There must be an cleaner solution, no?

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• sql user defined function

  - by nectar

  for a table valued function in sql why cant we write sql statements inside begin and end tags like- create function dbo.emptable() returns Table as BEGIN --it throws an error return (select id, name, salary from employee) END go while in scalar valued function we can use these tags like create function dbo.countemp() returns int as begin return (select count(*) from employee) end go is there any specific rule where we should use BEGIN & END tags

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• How to send the my sql result to controller in codeigniter as a variable

  - by udaya

  Hi In my mode I am selecting a field as $query1 = $this->db->query("SELECT dPassword FROM tbl_login WHERE dEmailID='[email protected]'"); How to return dpassword as a variable to my controller I tried this way return dpassword;

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• Do I need to cast the result of strtol to int?

  - by Kristo

  The following code does not give a warning with g++ 4.1.1 and -Wall. int octalStrToInt(const std::string& s) { return strtol(s.c_str(), 0, 8); } I was expecting a warning because strtol returns a long int but my function is only returning a plain int. Might other compilers emit a warning here? Should I cast the return value to int in this case as a good practice?

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• Function defined but not used in C

  - by thetna

  I have following code: static __inline__ LIST list_List(POINTER P) { return list_Cons(P,list_Nil()); } After compilation I got following warning: inlining is unlikely but function size may grow I removed the inline and changed into the following : static LIST list_List(POINTER P) { return list_Cons(P,list_Nil()); } Now I get the following warning: list_List is defined but not used. Can anybody please suggest me how can remove that warning.

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• how to use the results of a method in another method in a different class initialization at vb.net

  - by singgih

  I have a class which has the following methods: Public Function rumusbuffer () As Decimal buffer = (ukuranblok - pntrblok) / (ukrnrecord + pntrblok) Return buffer End Function Public Function rumusW () As Decimal interblock = pntrblok + ((pntrblok + intrblok) / buffer) Return interblock End Function how can I make the buffer can be used on its function rumusw but different forms so that her class should be re-initialization .. but the calculation method can rumusbuffer rumusw d use in the method?

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• Getting every odd variable in a list?

  - by John

  If I make a list in Python and want to write a function that would return only odd numbers from a range 1 to x how would I do that? For example, if I have list [1, 2, 3, 4] from 1 to 4 (4 ix my x), I want to return [1, 3].

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• How to get a random node from a tree?

  - by ooboo

  It looks easy, but I found the implementation tricky. I need that for a simple genetic programming problem I'm trying to implement. The function should, given a node, return the node itself or any of its children such that the probability of choosing a node is normally distributed relative to its depth (so the function should return mostly middle nodes, but sometimes the root itself or the lowest ones - but that's not really necessary if that makes it significantly more complex, if all any node is chosen with equal probability, that's good enough). Thanks

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• Indexing with pointer C/C++

  - by Leavenotrace

  Hey I'm trying to write a program to carry out newtons method and find the roots of the equation exp(-x)-(x^2)+3. It works in so far as finding the root, but I also want it to print out the root after each iteration but I can't get it to work, Could anyone point out my mistake I think its something to do with my indexing? Thanks a million :) #include <stdio.h> #include <math.h> #include <malloc.h> //Define Functions: double evalf(double x) { double answer=exp(-x)-(x*x)+3; return(answer); } double evalfprime(double x) { double answer=-exp(-x)-2*x; return(answer); } double *newton(double initialrt,double accuracy,double *data) { double root[102]; data=root; int maxit = 0; root[0] = initialrt; for (int i=1;i<102;i++) { *(data+i)=*(data+i-1)-evalf(*(data+i-1))/evalfprime(*(data+i-1)); if(fabs(*(data+i)-*(data+i-1))<accuracy) { maxit=i; break; } maxit=i; } if((maxit+1==102)&&(fabs(*(data+maxit)-*(data+maxit-1))>accuracy)) { printf("\nMax iteration reached, method terminated"); } else { printf("\nMethod successful"); printf("\nNumber of iterations: %d\nRoot Estimate: %lf\n",maxit+1,*(data+maxit)); } return(data); } int main() { double root,accuracy; double *data=(double*)malloc(sizeof(double)*102); printf("NEWTONS METHOD PROGRAMME:\nEquation: f(x)=exp(-x)-x^2+3=0\nMax No iterations=100\n\nEnter initial root estimate\n>> "); scanf("%lf",&root); _flushall(); printf("\nEnter accuracy required:\n>>"); scanf("%lf",&accuracy); *data= *newton(root,accuracy,data); printf("Iteration Root Error\n "); printf("%d %lf \n", 0,*(data)); for(int i=1;i<102;i++) { printf("%d %5.5lf %5.5lf\n", i,*(data+i),*(data+i)-*(data+i-1)); if(*(data+i*sizeof(double))-*(data+i*sizeof(double)-1)==0) { break; } } getchar(); getchar(); free(data); return(0); }

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• C# work with functions

  - by gloris

  Hi, I'am new with C#. How works in C# functions? My try: private void Form1_Load(object sender, EventArgs e) { MessageBox.Show(Convert.ToString(number_p(5))); } public void number_p(int number) { int one = 1; number = number + one; return number; } Error: return, why? Thanks

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• What is it called when an object member returns the object, enabling you to string method calls?

  - by thepearson

  Perhaps I'm just not using the right Google-age. But I am trying to remember what the term is for when you return the object from one of it members to enable you to do something similar: class obj { obj function method() { return this } } obj->method()->method()->method()->method() I used to know this but it has totally escaped me.

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• Overriding inherited generic methods

  - by jess

  I have this code in base class protected virtual bool HasAnyStuff<TObject>(TObject obj) where TObject:class { return false; } In child class I am overriding protected override bool HasAnyStuff<Customer>(Customer obj) { //some stuff if Customer.sth etc return false; } I am getting this error '''Type parameter declaration must be an identifier not a type''' What is it I am doing wrong here?

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• preg_match_all with surrounding data

  - by user323304

  Hey. I have a large amount of log data that I need to get some relevant information out of. The syntax is: WORD1 some text KEYWORD some text WORD2 WORD1 some text KEYWORD some text WORD2 WORD1 some text KEYWORD some text WORD2 WORD1 some text KEYWORD some text WORD2 Would it be possible to use regex to get a certain block out of it - so that when I queried some keyword it would return WORD1 some text THIS_KEYWORD some text WORD2 PS: There could be multiple instances of one keyword, it should return all of the blocks (preg_match_all, PREG_SET_ORDER?).

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• Returning the size of available virtual memory at run-time in C++

  - by Greenhouse Gases

  In C++ is there a predefined library function that will return the size of RAM currently available on a computer a program is being run on, at run-time? For instance, if an object is 4bytes, then can we divide the available virtual memory by 4 bytes to give an estimate of how many more objects could be stored by the program safely? I have used the sizeof() function to return the size of objects within my program. Thanks

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• ViewResult.ViewName property empty in unit test

  - by Michel

  Hi, in my unit test, the ViewResult.ViewName property is always empty when i use the action name for the view: return View(model); or return View(); Is that by design?

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