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  • How do I implement an higher lower game algorithm?

    - by lazorde
    The computer will guess a player’s number between 1 and 100. After each guess the human player should respond “higher”, “lower” or “correct”. Your program should be able to guess the player’s number in no more than 7 tries. Begin by explaining the game to the player, telling him/her to think of a number between 1 and 100. Make the computer do what you would normally do to guess a number in a certain range. Allow the user to respond with “higher”, “lower”, or “correct” after each computer guess. Output the number of tries it took the computer to guess the number. Make the game as user friendly as you can.

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  • How to access the calling source line from interactive shell

    - by TJD
    I want to make a function that can determine the source code of how it was called. I'm aware of how to do this generally with the inspect module. For example, this question, works well and provides my desired output in the lines variable as shown below: def hello(x): frame,filename,line_number,function_name,lines,index=\ inspect.getouterframes(inspect.currentframe())[1] print(frame,filename,line_number,function_name,lines,index) The problem is that this solution doesn't work in an interactive command line session. For example, from a command line, the result looks like: >>> y = hello(7) (<frame object at 0x01ECA9E8>, '<stdin>', 1, '<module>', None, None) The problem is that the source file is '<stdin>', so the lines variable is None. How can I access the calling line to find the result containing the string y = hello(7) during an interactive session?

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  • Run a site on Scheme

    - by Lajla
    I can't find this on Google (so maybe it doesn't exist), but I basically'd like to install something on a web server such that I can run a site on Scheme, PHP is starting to annoy me, I want to get rid off it, what I want is: Run Scheme sources towards UTF-8 output (duh) Support for SXML, SXLT et cetera, I plan to compose the damned thing in SXML and - to normal representation on at the end. Ability to read other files from the server, write them, set permissions et cetera Also some things to for instance determine the filesize of files, height of images, mime-types and all that mumbo-jumbo (optionally) connect to a database, but for what I want to do storing the entire database in S-expressions itself is feasible enough I don't need any fancy libraries and other things that come with it like CMS'es and what-not, except the support for SXML but I'm sure I can just find a lib for that anyway that I can load.

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  • Convert arbitrary length to a value between -1.0 a 1.0?

    - by TheDarkIn1978
    How can I convert a length into a value in the range -1.0 to 1.0? Example: my stage is 440px in length and accepts mouse events. I would like to click in the middle of the stage, and rather than an output of X = 220, I'd like it to be X = 0. Similarly, I'd like the real X = 0 to become X = -1.0 and the real X = 440 to become X = 1.0. I don't have access to the stage, so i can't simply center-register it, which would make this process a lot easier. Also, it's not possible to dynamically change the actual size of my stage, so I'm looking for a formula that will translate the mouse's real X coordinate of the stage to evenly fit within a range from -1 to 1.

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  • Overriding vs Virtual

    - by anonymous
    What is the purpose of using the reserved word virtual in front of functions? If I want a child class to override a parent function, I just declare the same function such as "void draw(){}". class Parent{ public: void say(){ std::cout << "1"; }}; class Child : public Parent{public:void say(){ std::cout << "2"; } }; int main() { Child* a = new Child(); a->say(); return 0; } The output is 2. So again, why would the reserved word "virtual" be necessary in the header of say() ? Thanks a bunch.

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  • In Selenium IDE, can I store an element to use in subsequent asserts?

    - by Colin Fine
    I've just started using Selenium-IDE (not looked at selenium-RC yet: if somebody tells me that that is the answer to my question I'll look at it) One of the operations I'm testing generates some output in a table in the next HTML page, but the order of the rows is not predictable. I can obviously use 'assertTextPresent', but I want to do a bit more, and check that various bits of text are in the same row. What I would like to be able to do is to identify a tr by some content, and then use that tr in subsequent asserts; something like storeExpression //table[@id='TABLE_6']/td[.='case_1']/.. row assertText ${row} 'Some text' assertText ${row} 'Some other text' to check that 'Some text' and 'Some other text' occur in the same table row as 'case_1'. I haven't got this to work so far, and I'm not sure whether it is possible, or what syntax to use if it is. Has anybody managed to do this?

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  • How do I find all the datetimes that happen on a particular date in ruby?

    - by Angela
    I have a method which goes through each day of the week: def dates_week(d, delim) "<tr>" + (d.beginning_of_week...(d.beginning_of_week+5)).map do |day| "<#{delim}> #{yield(day)} </#{delim}>" end.join + "</tr>" end For each day of the week, I plug that as an arg into a method (or maybe a named_scope, haven't figured out which), that will then output the .count for :all the emails that have a :date_sent on that date. However, :date_sent is a date-timestamp, so I can't use == as I have below. def sent_emails_by_date(date) ContactEmail.find(:all, :conditions => "date_sent = '#{date}'" " ).count end How do I find all the emails that fall on the day for the date passed through from the method which loops through a week as shown above?

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  • php Cannot modify header information

    - by mohan286
    Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\program\products\addproduct.php:48) in C:\xampp\htdocs\program\products\addproduct.php on line 77 $s=$_REQUEST; $s=$s[subcategory]; $n=$_POST["productname"]; $p=$_POST["productprice"]; $d=$_POST["productdes"]; $i=$_POST["productimage"]; $sql="INSERT INTO products (product_name,subcat_id ,price,description,product_image) VALUES ('$n','$s','$p','$d','$i')"; //"INSERT INTO freshers_details "."VALUES "."('$name','$mobile','$qualif','$addr','$gender','$mailid')"; if(mysql_query($sql,$con)) { header('Location: http://localhost/program/products/products_listing.php'); } else { die('Error: ' . mysql_error()); } mysql_close($con); }

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  • Can a shell loop unzip all the files in a directory?

    - by helpwithshell
    I've seen loops to unzip all zip files in a directory. However, before I run this, I would rather make sure what I'm about to run will work right: for i in dir; do cd $i; unzip '*.zip'; rm -rf *.zip; cd ..; done Basically I want it to look at the output of "dir" see all the folders, for each directory cd into it, unzip all the zip archives, then remove them, then cd back and do it again until there are no more. Is this something I should do in a single command or should I consider doing this in Perl?

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  • Algorithms for finding the intersections of intervals

    - by tomwu
    I am wondering how I can find the number of intervals that intersect with the ones before it. for the intervals [2, 4], [1, 6], [5, 6], [0, 4], the output should be 2. from [2,4] [5,6] and [5,6] [0,4]. So now we have 1 set of intervals with size n all containing a point a, then we add another set of intervals size n as well, and all of the intervals are to the right of a. Can you do this in O(nlgn) and O(nlg^2n)?

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  • Django: ordering numerical value with order_by

    - by h3
    I'm in a situation where I must output a quite large list of objects by a CharField used to store street addresses. My problem is, that obviously the data is ordered by ASCII codes since it's a Charfield, with the predictable results .. it sort the numbers like this; 1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 20, 21.... Now the obvious step would be to change the Charfield the proper field type (IntegerField let's say), however it cannot work since some address might have apartments .. like "128A". I really don't know how I can order this properly ..

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  • How to build a sentence parser using only the c++ standared library?

    - by CiM
    Hello everyone, I am designing a text based game similar to Zork, and I would like it to able to parse a sentance and draw out keywords such TAKE, DROP ect. The thing is, I would like to do this all through the standard c++ library... I have heard of external libraries (such as flex/bison) that effectively accomplish this; however I don't want to mess with those just yet. What I am thinking of implementing is a token based system that has a list of words that the parser can recognize even if they are in a sentence such as "take sword and kill monster" and know that according to the parsers grammar rules, TAKE, SWORD, KILL and MONSTER are all recognized as tokens and would produce the output "Monster killed" or something to that effect. I have heard there is a function in the c++ standard library called strtok that does this, however I have also heard it's "unsafe". So if anyone here could lend a helping hand, I would greatly appreciate it.

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  • How To Parse String File Txt Into Array With C++

    - by Ibnu Syuhada
    I am trying to write a C++ program, but I am not familiar with C++. I have a .txt file, which contains values as follows: 0 0.0146484 0.0292969 0.0439453 0.0585938 0.0732422 0.0878906 What I have done in my C++ code is as follows: #include <iostream> #include <fstream> using namespace std; int main() { string line; ifstream myReadFile; myReadFile.open("Qi.txt"); if(myReadFile.is_open()) { while(myReadFile.good()) { getline(myReadFile,line); cout << line << endl; } myReadFile.close(); } return 0; } I would like to make the output of the program an array, i.e. line[0] = 0 line[1] = 0.0146484 line[2] = 0.0292969 line[3] = 0.0439453 line[4] = 0.0585938 line[5] = 0.0732422 line[6] = 0.0878906

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  • Rails 3 respond_with, route constraints and resources

    - by Intelekshual
    I'm building a versioned API, so I have the following nested controllers: ApiController < ApplicationController Api::V1Controller < ApiController Api::V1::EventsController < Api::V1Controller The API is accessed via a subdomain. I have the following routes: constraints(:subdomain => "api") do scope :module => 'api' do namespace :v1 do resources :events end end end This produces the type of URL I want (/v1/events). The problem I'm facing is when using responds_with in Api::V1::EventsController. Just doing something as simple as the below fails with the error too few arguments: def index @events = Event.all respond_with(@events) end I know respond_width is meant to be used with resources, but I'm not sure how the events resource should be accessed from the constrained, scoped, and namespaced route. I can output other things (such as current_user), just not an array of events. Help?

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  • How to solve "call to undefined function domxml_new_doc()...."

    - by Jerry
    Hello guys. I am trying to output xml by using domxml_new_doc. However, I just got the call to undefined function domxml_new_doc() error. I tried google it but still not luck. Do I have to install any extension or library? Thanks for the help. $doc=domxml_new_doc("1.0"); //error on this line.... $node=$doc->create_element("marker"); $parnode=$doc->append_child($node);

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  • Reading a variable messes it up?!?!

    - by EpsilonVector
    We have the following line of code: printf("%d\n", toc->runlist.next); printf("%d\n", toc->runlist.next); These are the definitions: typedef struct thread_overview_control{ int id[NR_UTHREADS]; list_t runlist; int active_counter; int main_thread; int need_resched; } thread_overview_control; thread_overview_control* toc; What I'm trying to do is implement user threads. For some reason the output of the above code at the point where our test run crushes is: 12345678 //some address 0 //NOW IT'S NULL?!?!?! How can this happen?? All we do is read a variable. And the strange thing is, without printf's there are no crashes. What's going on?

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  • How to calculate the state of a graph?

    - by zcb
    Given a graph G=(V,E), each node i is associated with 'Ci' number of objects. At each step, for every node i, the Ci objects will be taken away by the neighbors of i equally. After K steps, output the number of objects of the top five nodes which has the most objects. Some Constrains: |V|<10^5, |E|<2*10^5, K<10^7, Ci<1000 My current idea is: represent the transformation in each step with a matrix. This problem is converted to the calculation of the power of matrix. But this solution is much too slow considering |V| can be 10^5. Is there any faster way to do it?

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  • Mysterious different conversion to string[] of seemingly same input data

    - by Roman Kuzmin
    During investigation of some problem I found that the reason was unexpected different conversion to string[] of seemingly same input data. Namely, in the code below two commands both return the same two items File1.txt and File2.txt. But conversion to string[] gives different results, see the comments. Any ideas why is it? This might be a bug. If anybody also thinks so, I’ll submit it. But it would nice to understand what’s going on and avoid traps like that. # *** WARNING # *** Make sure you do not have anything in C:\TEMP\Test # *** The code creates C:\TEMP\Test with File1.txt, File2.txt # Make C:\TEMP\Test and two test files $null = mkdir C:\TEMP\Test -Force 1 | Set-Content C:\TEMP\Test\File1.txt 1 | Set-Content C:\TEMP\Test\File2.txt # This gets just file names [string[]](Get-ChildItem C:\TEMP\Test) # This gets full file paths [string[]](Get-ChildItem C:\TEMP\Test -Include *) # Output: # File1.txt # File2.txt # C:\TEMP\Test\File1.txt # C:\TEMP\Test\File2.txt

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  • Array Related Doubt.......

    - by AGeek
    I have the following program........... int insert(int *array, int arraySize, int newElement) { array[arraySize + 1] = newElement; return (arraySize+1); // Return new Array size...... } int main() { int array[] = {1,2,3,4,5}; int arraySize = sizeof(array) / sizeof(int); insertInArray(array, arraySize,6); print(array); } I am trying to work out this program in C programming language... But when i print the array after insertion,,, it doesn't prints the desired output which is needed.. Please correct me if i am doing something wrong..... Thanks..

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  • Get location from where the Java code is executed

    - by drasto
    I have a swing Java application that preserves a lot of data (you can think of a game and its saves for example). Those data are stored in files rather then in database. I would like to keep this files near installation files(.jar file) of my application.Some users(like me) are used to delete default application folder of OS when it comes to large and I don't want them to loose their data this way. Any ideas how to do this easily ? How do I get the folder of the .jar file from program that is executing form that .jar file? Or how do I output files directly into some package? How do I create packages(folders inside jar) dynamically ? Or is there a simple way to distribute Java application in other formats then .jar and then store generated data in installation (sub)folder ? Thanks for reading

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  • MVC Helper Extension issue

    - by BeCool
    Hi, I need to implement a HtmlHelper extension in my MVC project simply just to output some string but ONLY in the DEBUG mode, not in REALEASE. My first attempt would be: [Conditional("DEBUG")] public static string TestStringForDebugOnly(this HtmlHelper helper, string testString) { return testString; } But obviously that would give a compile error: "The Conditional attribute is not valid because its return type is not void." So my understanding is once you set [Condition] attribute, it doesnt allow to return anything? why? What is other way to implement this kind of function? anyone help would be much appreciated. Thanks!

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  • Query to return substring from string in SQL Server

    - by Jowie
    I have a user defined function called Sync_CheckData under Scalar-valued functions in Microsoft SQL Server. What it actually does is to check the quantity of issued product and balance quantity are the same. If something is wrong, returns an ErrorStr nvarchar(255). Output Example: Balance Stock Error for Product ID : 4 From the above string, I want to get 4 so that later on I can SELECT the rows which is giving errors by using WHERE clause (WHERE Product_ID = 4). Which SQL function can I use to get the substring?

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  • In R draw two lines, with slopes double and half the value of the best fit line

    - by D W
    I have data with a best fit line draw. I need to draw two other lines. One needs to have double the slope and the other need to have half the slope. Later I will use the region to differentially color points outside it as per: http://stackoverflow.com/questions/2687212/conditionally-colour-data-points-outside-of-confidence-bands-in-r Example dataset: ## Dataset from http://www.apsnet.org/education/advancedplantpath/topics/RModules/doc1/04_Linear_regression.html ## Disease severity as a function of temperature # Response variable, disease severity diseasesev<-c(1.9,3.1,3.3,4.8,5.3,6.1,6.4,7.6,9.8,12.4) # Predictor variable, (Centigrade) temperature<-c(2,1,5,5,20,20,23,10,30,25) ## For convenience, the data may be formatted into a dataframe severity <- as.data.frame(cbind(diseasesev,temperature)) ## Fit a linear model for the data and summarize the output from function lm() severity.lm <- lm(diseasesev~temperature,data=severity) # Take a look at the data plot( diseasesev~temperature, data=severity, xlab="Temperature", ylab="% Disease Severity", pch=16, pty="s", xlim=c(0,30), ylim=c(0,30) ) title(main="Graph of % Disease Severity vs Temperature") par(new=TRUE) # don't start a new plot abline(severity.lm, col="blue")

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  • Is modifying a file without writing a new file possible in c++?

    - by Phenom
    Let's say I have a text file that is 100 lines long. I want to only change what is in the 50th line. One way to do it is open the file for input and open a new file for output. Use a for-loop to read in the first half of the file line by line and write to the second file line by line, then write what I want to change, and then write out the second half using a for-loop again. Finally, I rename the new file to overwrite the original file. Is there another way besides this? A way to modify the contents in the middle of a file without touching the rest of the file and without writing everything out again? If there is, then what's the code to do it?

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  • How to Display Validation Error Messages on a Page?

    - by Yardstermister
    I am pretty new to ASP.NET and C# I have spent the day learning the basics of the ASP.NET Membership provider I have built all my validator but are getting stuck at outputting my error message on the page. private void LogCreateUserError(MembershipCreateStatus status, string username) { string reasonText = status.ToString(); switch (status) { case MembershipCreateStatus.DuplicateEmail: case MembershipCreateStatus.DuplicateProviderUserKey: case MembershipCreateStatus.DuplicateUserName: reasonText = "The user details you entered are already registered."; break; case MembershipCreateStatus.InvalidAnswer: case MembershipCreateStatus.InvalidEmail: case MembershipCreateStatus.InvalidProviderUserKey: case MembershipCreateStatus.InvalidQuestion: case MembershipCreateStatus.InvalidUserName: case MembershipCreateStatus.InvalidPassword: reasonText = string.Format("The {0} provided was invalid.", status.ToString().Substring(7)); break; default: reasonText = "Due to an unknown problem, we were not able to register you at this time"; break; } //CODE TO WRITE reasonText TO THE HTML PAGE ?? } What is the best way to output the varible result onto the page as I have relied upon the built in ASP:Validators until now.

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