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• How can I create Min stl priority_queue?

  - by eriks

  The default stl priority queue is a Max one (Top function returns the largest element). Say, for simplicity, that it is a priority queue of int values.

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• searching a character in a string

  - by iSight

  hi, how can find position of a character in a string, and get the substring till that character. say char* test = "Hello world, I come back"; I want to find first occurrence 'l' character.

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• Calculate coordinates between startpoint and endpoint

  - by MikeB123

  Given.. 1 - The start-point GPS coordinates, 2 - The end-point GPS coordinates, 3 - The speed at which the object is travelling, 4 - Knowing that the trip trajectory will be a straight line... How can I calculate what my GPS coordinated will be in n minutes' time? That is to say, how can I calculate my position at a given time after the trip has started before the trip has ended?

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• How to convert from string to a number, and vice-versa in C++?

  - by Igal

  DEAR All I'm new to the C++, so maybe someone can say what the proper way to write a function that gets a string char (represents number) and converts it to the integer number. For example : input : Sixty five, output: 65. Maybe it should use by cin.getline() ? Well, vice-versa is little bit simlper... Thanks for advance. Igal

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• help req for subsonic

  - by Muhammad Afaq Toufiq

  i m using subsonic with sqlserver its working fine. now my boss say donnt use sqlserver use Oracle database in app config For sqlserver -- now wat changes for oracle database req in app.cof ??? plz help me thanx in advance.

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• Issuing multiple requests using HTTP/1.1 Pipelining

  - by Robert S. Barnes

  When using HTTP/1.1 Pipelining what does the standard say about issuing multiple requests without waiting for each request to complete? What do servers do in practice? I ask because I once tried writing a client which would issue a batch of GET requests for multiple files and remember getting errors. I wasn't sure if it was due to me incorrectly issuing the GET's or needing to wait for each individual request to finish before issuing the next GET.

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• How to turn on and minimize Microsoft Speech Recognition?

  - by aF

  I'm using Windows 7 Pro and I made a C# program that makes Speech Recognition. When I run the program, the Speech Recognition App initializes. Now, how can I turn it on ("Listen to everything I say") and minimize it (so it goes to systems tray and isn't visible), using C# or Python?

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• What's the benefit of declaring class functions separately from their actual functionality?

  - by vette982

  In C++, what's the benefit of having a class with functions... say class someClass{ public: void someFunc(int arg1); }; then having the function's actual functionality declared after int main int main() { return 0; } void someClass::someFunc(int arg1) { cout<<arg1; } Furthermore, what's the benefit of declaring the class in a .h header file, then putting the functionality in a .cpp file that #includes the .h file?

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• duplicate symbol error C++

  - by iSight

  Hi, I have added some const character in my file as under. The error i get is duplicate symbol _xyz(say). What is the problem with it and how could i get out of this. const char* xyz = "xyz"; class Abc { public: Abc() { } };

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• Adding LambaExpression to an instance of IQueryable

  - by Paul Knopf

  ParameterExpression parameter = Expression.Parameter(typeof(Product), "x"); MemberExpression Left = Expression.MakeMemberAccess(parameter, typeof(Product).GetProperty("Name")); ConstantExpression Right = Expression.Constant(value, typeof(String)); BinaryExpression expression = Expression.Equal(Left, Right); LambdaExpression lambada = Expression.Lambda<Func<Product, bool>>(expression, parameter); Now how do I add this lambada to an instance of an IQuerybale, lets say _query _query.Where(lambada.Compile());?

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• It ok for AJAX to take place over non-SSL?

  - by Joshua

  Say I have an https page can I make ajax calls to non SSL without getting warnings in browsers? I want to do it for non sensitive data so its faster

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• Repeated Rake Task Using Delayed Job

  - by bob

  Hello, I am currently using the delayed_job gem and I was wondering how to run a rake task every 5 minutes. I want to run "rake ts:reindex RAILS_ENV=production" every 5 minutes but I'm not sure where to start. I really don't have much more I can say about this because I am VERY inexperienced in this area of rails development.

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• MySQL How to select friends from a friendship table?

  - by Thomas Puthoor

  Hi I have a simple database for storing friendship, with just two columns person_a, person_b , denoting that person_a and person_b are friends. From a big list like this what query should I run to get say get all friends of 'sam'. Thank you.

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• Usability of an endless/infinite scroll

  - by Anton Gogolev

  What are pros and cons of this technique (see Softfolio for an example). Two things I personally thought of are as follows: Impossible to tell someone where an item of interest is located (like, you probably won't say "324-th row, second column") Broken navigation when you return back to an infinitely scrolled page. What else can you think of? And what do you personally think of this approach in general. Would you use this in you projects?

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• how do you use a non number as a seed in an rng?

  - by calccrypto

  how would you use, say, the string "abc" as the seed of an rng? would you change it into 0x616263, or 123, or hash it with sha1 (or some other hash), or something else?

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• Easiest way to choose a percentage of an amount of rows from a MySQL table?

  - by Rob

  I have a script that has a GET variable: $_GET['percentage'] I have a MySQL table of data. Now lets say that there are 100 rows of data in this table. In pseudo-code: SELECT data FROM table Now would it be possible to select $_GET['percentage'] of random data from table? For example (again in pseudo-code): $_GET['percentage'] = 10; SELECT 10% of data from table order by rand() If this IS possible, how could I do it?

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• When deploying python, what web server options do we have? is the process inefficient at all?

  - by Blankman

  I think in the past python scripts would run off CGI, which would create a new thread for each process. I am a newbie so I'm not really sure, what options do we have? Is the web server pipeline that python works under any more/less effecient than say php?

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• Add handler multiple times in jquery

  - by AdmSteck

  How does jquery handle event assignment when it comes to assigning the same handler multiple times? Let's say I have <div class="draggable">Some Text</div> Are there any side effects (performance or otherwise) from calling the following multiple times? $('.draggable').draggable();

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• HIde Word with javascript

  - by manndaar

  Hello, I am not developer so I need help from you guys. My Problem is simple. I just want javascript to hide word before "." Example : say for google.com I just want word ".com" tobe print. Please note that my content is dynamic so google.com will keep changing everytime to google.net or yahoo.com...... so on.. Thanx in advanced.

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• How to redirect the output of a system call to inside the program in C/C++?

  - by debugger

  Hi All, I'm writing a program in C++ which do some special treatment for all the files in the current directory on Linux OS. So i was thinking of using system calls such as system("ls") to get the list of all files. but how to store it then inside my program ? ( how to redirect the output of ls to let's say a string that i declared in the program ) Thanks

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• Extend multiple classes at once

  - by Starkers

  I want to share a method amongst all Ruby's data object classes. That is to say the following classes: Hash String Number Array Firstly, any classes I've missed out? Secondly, how can I share my_method amongst all classes at once? class Hash def my_method "hi" end end class String def my_method "hi" end end class Number def my_method "hi" end end class Array def my_method "hi" end end

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• Audio Streaming API's: Wifi vs what?

  - by Moshe

  I've noticed certain radio apps, that some stations required wifi and others did not. What were those other stations possibly using? Are there other methods of streaming audio on iOS? Apparently, I was not clear in my question before. I'm asking in terms of API's. Is there an API to interact directly with say, FM radio, on iOS? Is wifi the only way of streaming audio?

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• Seeking to a line in a file in g++

  - by Phenom

  Is there a way that I can seek to a certain line in a file to read or write data? Let's say I want to write some data starting on the 10th line in a text file. There might be some data already in the first few lines, or the file could even be empty. Is there a way I can seek directly to the line I want without having to worry about what's already in the file?

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• Reading DWORD from binary file

  - by Archcegeloge

  Why these lines of code doesn't work when i try to read a DWORD num = 1880762702 using fread(&num, "file path", 1, FILE*); I get the result = 10574 if I change the num to any other number say 2880762702 only then it works.

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• Using many mutex locks

  - by hanno

  I have a large tree structure on which several threads are working at the same time. Ideally, I would like to have an individual mutex lock for each cell. I looked at the definition of pthread_mutex_t in bits/pthreadtypes.h and it is fairly short, so the memory usage should not be an issue in my case. However, is there any performance penalty when using many (let's say a few thousand) different pthread_mutex_ts for only 8 threads?

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