Search Results

Search found 4503 results on 181 pages for 'logical operator'.

Page 94/181 | < Previous Page | 90 91 92 93 94 95 96 97 98 99 100 101  | Next Page >

• why inner class doesn't compile..?

  - by Vincenzo

  This is my code: #include <algorithm> class A { void f() { struct CompareMe { bool operator() (int i, int j) { return i < j; } } comp; int a[] = {1, 2, 3, 4}; int found = std::min_element(a[0], a[3], comp); } } Error message: no matching function for call to ‘min_element(int&, int&, A::f()::CompareMe&) What am I doing wrong?

  Read the article

• How can an object not be compared to null?

  - by ProfK

  I have an 'optional' parameter on a method that is a KeyValuePair. I wanted an overload that passes null to the core method for this parameter, but in the core method, when I want to check if the KeyValuePair is null, I get the following error: Operator '!=' cannot be applied to operands of type System.Collections.Generic.KeyValuePair<string,object>' and '<null>. How can I not be allowed to check if an object is null?

  Read the article

• [game] How to write ::: in cpp and ??? in c#?

  - by daveny

  These questions are a kind of game, and I did not find the solution for them. It is possible to write ::: in Cpp without using "" or anything like this and the compiler will accept it. (macro-s are prohibited too) And the same is true for C# too, but in C#, you have to write ???. I think Cpp will use the :: scope operator and C# will use '? :' , but I do not know the answers to them. Any idea?

  Read the article

• problem with intersect operation in a sql query

  - by Shadi

  I wrote the following query, I think it's correct but I have a "missing operator" error. SELECT * FROM results,Types WHERE results.a=Types.b INTERSECT SELECT * FROM results,Types WHERE results.c=Types.b Could somebody help me please? Thanks a lot.

  Read the article

• C++ and,or,not,xor keywords [closed]

  - by uray

  Possible Duplicate: The written versions of the logical operators. I notice that C++ define keyword and, or, not, xor, and_eq, or_eq, not_eq and xor_eq as an alternative to &&, ||, !, ^, &=, |=, != and |=. and they're rarely used! What's wrong? Are they not portable?

  Read the article

• Subtraction without minus sign

  - by pragadheesh

  How can i do subtraction of integers in C without using either the unary or binary '-' operator? Or can we do the same for other data types like float/double?

  Read the article

• Is there a suitable replacement for C++, when I would like to write video processing applications?

  - by Nisanio

  Hi I want to write a video editing software, and the "logical" conclusion is that the language I must to use is C++... But I don't like it (sorry c++ fans) I would like to write it with something cool, like Lisp or Haskell or Erlang... But I don't know if the open source implementation of those languages (I don't have money to buy licenses) let me made a competitive software (in the performance area) What do you think? what do you recommend?

  Read the article

• Why do I need an intermediate conversion to go from struct to decimal, but not struct to int?

  - by Jesse McGrew

  I have a struct like this, with an explicit conversion to float: struct TwFix32 { public static explicit operator float(TwFix32 x) { ... } } I can convert a TwFix32 to int with a single explicit cast: (int)fix32 But to convert it to decimal, I have to use two casts: (decimal)(float)fix32 There is no implicit conversion from float to either int or decimal. Why does the compiler let me omit the intermediate cast to float when I'm going to int, but not when I'm going to decimal?

  Read the article

• c#: adding two strings

  - by every_answer_gets_a_point

  i am doing: html = new WebClient().DownloadString("http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=" + biocompany); and i am getting the error: Error 1 Operator '&' cannot be applied to operands of type 'string' and 'string' but i am not even using the & ! please help!

  Read the article

• Can I use "map" as a substitute for "for each"/"for in"?

  - by John Mee

  For a little while now javascript has the "map" function to loop over arrays. It appears possible to use it as a 'foreach' operator for example: var arr = ['a','b','c'] var doubles = arr.map(function(val){ return val + val }) Is this better or worse than saying for(var i in arr){ ... 50/50: saves having to use the index but adds a callback; it doesn't seem very common so I hesitate to use it but still want to.

  Read the article

• Which is clearer form: if(!value) or if(flag == value) ?

  - by CodexArcanum

  I understand this is a subjective question, so I apologize if it needs to be closed, but I feel like it comes up often enough for me to wonder if there is a general preference for one form over the other. Obviously, the best answer is "refactor the code so you don't need to test for falsehood" but sometimes there's no easy way to do so and the "else" branch is simply to continue processing. So when you must have an "if not false" construct, which is the preferred standard: The not operator if(!value) Or the test for false if(value == false)

  Read the article

• Why enabling transparency can lead to cliping problems ?

  - by Amokrane

  Hi, I'm working on a 3D graphical application in Java using the Java 3D API. I noticed that every time I was dealing with transparency, all I got in return were some clipping problems. Some parts of the scene weren't displayed properly. It might seem obvious that this would happen in a certain way but I'm looking for a logical explanation, why is this happening? Thank you

  Read the article

• What are the most interesting/useful new things in Perl 5.12?

  - by hillu

  I remember quickly adopting given .. when, say, //, and the smart matching operator when Perl 5.10 came around. What do you consider the most useful fixes and features introduced with Perl 5.12.0?

  Read the article

• what does this C++ macro do ?

  - by fadini

  THis is for MSVC #define Get64B(hi, lo) ((((__int64)(hi)) << 32) | (unsigned int)(lo)) Specifically, what is the role of the 'operator <<' ? Thanks for your help

  Read the article

• [UNIX] Is it safe to pipe the output of several parallel processes to one file using >> ?

  - by conradlee

  I'm scraping data from the web, and I have several processes of my scraper running in parallel. I want the output of each of these processes to end up in the same file. As long as lines of text remain intact, I the order of the lines does not matter. In UNIX, can I just pipe the output of each process to the same file using the operator?

  Read the article

• How is it possible to legally write ::: in C++ and ??? in C#?

  - by daveny

  These questions are a kind of game, and I did not find the solution for them. It is possible to write ::: in C++ without using quotes or anything like this and the compiler will accept it (macros are prohibited too). And the same is true for C# too, but in C#, you have to write ???. I think C++ will use the :: scope operator and C# will use ? : , but I do not know the answers to them. Any idea?

  Read the article

• Problem with receiving data form serial port in c#?

  - by moon

  hello i have problem with receiving data from serial port in c# in am inserting a new line operator at the end of data buffer. then i send this data buffer on serial port, after this my c# GUI receiver will take this data via Readline() function but it always give me raw data not the actual one how to resolve this problem.

  Read the article

• Is there any standard delete functor?

  - by FredOverflow

  I am looking for a functor that deletes its argument: template<class T> struct delete_functor { void operator()(T* p) { delete p; } }; Is there something like this in std, tr1 or boost?

  Read the article

• What means Zend_Mime::ENCODING_8BIT when sending mails with Zend_Mail?

  - by Alex

  In the example for Zend_Mail on http://framework.zend.com/manual/en/zend.mail.attachments.html they use ENCODING_8BIT but searching for what that might be sends me to http://msdn.microsoft.com/en-us/library/ms526992%28EXCHG.10%29.aspx were (and this sounds logical to me) it is explained that 8bit encoding does not make sense for emails.

  Read the article

• c#: xdocument and reading xsi:nil="true" gives "String was not recognized as a valid DateTime"

  - by DingoCC

  Happily reading xml with var q2 = from c in xmlDoc.Descendants("Ticket") select new { Responded_Date = (DateTime)c.Element("Responded_Date") } However when the tag is <Responded_Date xsi:nil="true" /> I get "String was not recognized as a valid DateTime". I don't wish to use the null coalescing operator but simply to take the null and insert into datatable

  Read the article

• In C#, how do I check if a type is a subtype OR the type of an object?

  - by Daniel T.

  To check if a type is a subclass of another type in C#, it's easy: typeof (SubClass).IsSubclassOf(BaseClass); // returns true However, this will fail: typeof (BaseClass).IsSubclassOf(BaseClass); // returns false Is there any way to check whether a type is either a subclass OR of the base class itself, without using an OR operator or using an extension method?

  Read the article

• Help with SQL query in C#

  - by DanSogaard

  I'm trying to rename the columns. The syntax should be the column name between double quotes incase of two words, like this: SELECT p_Name "Product Name" from items So I'm trying to do it in C# code like this: string sqlqry1 = "SELECT p_Name \"Prodcut Name\" from items"; But I get an error: Syntax error (missing operator) in query expression 'p_Name "Prodcut Name"'. It seems am having somthing wrong with the quotes, but I can't figure out.

  Read the article

• Constructing an if statement from the client data in python

  - by Vishal

  Hi, I need to construct an if statement from the data coming from the client as below: conditions: condition1, condition2, condition3, condition4 logical operators: lo1, lo2, lo3 (Possible values: "and" "or") Eg. if condition1 lo1 condition2 lo3 condition4: # Do something I can think of eval/exec but not sure how safe they are! Any better approach or alternative? Appreciate your responses :) PS: Client-side: Flex, Server-side: Python, over internet Thanks

  Read the article

• Get the ContextMenu that a ToolStripDropDownItem belongs to?

  - by C. Ross

  How can I get ContextMenu that a ToolStripDropDownItem belongs to? This is for the purpose of using the ContextMenu.SourceControl as the logical sender to an event.

  Read the article

• Controling page number shown in printing dialog

  - by Matthias Wandel

  I'm trying to implement printing a range of pages in c# While printing, the .net framework throws up a message box that says "Page # of document". This starts at 1, and counts up to the number of pages printed. If I'm printing pages 10-11, I want that count to start at 10, not 1. Is there a way to set the starting value? The logical thing would be if it started at PrinterSettings.FromPage, but it ignores that value.

  Read the article

< Previous Page | 90 91 92 93 94 95 96 97 98 99 100 101  | Next Page >