Search Results

Search found 35149 results on 1406 pages for 'yield return'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 271/1406 | < Previous Page | 267 268 269 270 271 272 273 274 275 276 277 278  | Next Page >

  • How to fix this python program?

    - by Phenom
    import math def p(n): return 393000*((288200/393000)^n * math.exp(-(288200/393000)))/math.factorial(n) print p(3) When I run it, I get the following error message: Traceback (most recent call last): File "poisson.py", line 6, in <module> print p(3) File "poisson.py", line 4, in p return 393000*((288200/393000)^n * math.exp(-(288200/393000)))/math.factoria l(n) TypeError: unsupported operand type(s) for ^: 'int' and 'float'

    Read the article

  • sigsetjmp and siglongjmp inside signal handler

    - by EpsilonVector
    How do I: sigsetjmp inside the handler and then return from the handler such that the signal will be unmasked once I siglongjmp back to this point? In pseudo code this is sort of the function that I have: signal_handler(){ if(sigsetjmp(env[i++])) return; else siglongjmp(env[i]); } It's supposed to be the context switch code for user threads in Linux.

    Read the article

  • Is Abstract Factory Pattern implemented correctly for given scenario.... ???

    - by Amit
    First thing... I am novice to pattern world, so correct me if wrong anywhere Scenario: There are multiple companies providing multiple products of diff size so there are 3 entities i.e. Companies, Their Product and size of product I have implement Abstract Pattern on this i.e. so that I will create instance of IProductFactory interface to get desired product... Is below implementation of Abstract Factory Pattern correct ??? If not then please correct the approach + Also tell me if any other pattern can be used for such scenario Thanks in advance... public enum Companies { Samsung = 0, LG = 1, Philips = 2, Sony = 3 } public enum Product { PlasmaTv = 0, DVD = 1 } public enum ProductSize { FortyTwoInch, FiftyFiveInch } interface IProductFactory { IPhilips GetPhilipsProduct(); ISony GetSonyProduct(); } interface ISony { string CreateProducts(Product product, ProductSize size); } interface IPhilips { string CreateProducts(Product product, ProductSize size); } class ProductFactory : IProductFactory { public IPhilips GetPhilipsProduct() { return new Philips(); } public ISony GetSonyProduct() { return new Sony(); } } class Philips : IPhilips { #region IPhilips Members public string CreateProducts(Product product, ProductSize size) {// I have ingnore size for now.... string output = string.Empty; if (product == Product.PlasmaTv) { output = "Plasma TV Created !!!"; } else if (product == Product.DVD) { output = "DVD Created !!!"; } return output; } #endregion } class Sony : ISony {// I have ingnore size for now.... #region ISony Members public string CreateProducts(Product product, ProductSize size) { string output = string.Empty; if (product == Product.PlasmaTv) { output = "Plasma TV Created !!!"; } else if (product == Product.DVD) { output = "DVD Created !!!"; } return output; } #endregion } IProductFactory prodFactory = new ProductFactory(); IPhilips philipsObj = prodFactory.GetPhilipsProduct(); MessageBox.Show(philipsObj.CreateProducts(Product.DVD, ProductSize.FortyTwoInch)); or //ISony sonyObj = prodFactory.GetSonyProduct(); //MessageBox.Show(sonyObj.CreateProducts(Product.DVD, ProductSize.FortyTwoInch));

    Read the article

  • Classic asp comparison of comma separated lists

    - by Reiwoldt
    Hello, I have two comma separated 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

    Read the article

  • Trying to implement a method that can compare any two lists but it always returns false

    - by Tyler Pfaff
    Hello like the title says I'm trying to make a method that can compare any two lists for equality. I'm trying to compare them in a way that validates that every element of one list has the same value as every element of another list. My Equals method below always returns false, can anyone see why that is? Thank you! using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; public class IEnumerableComparer<T> : IEqualityComparer<IEnumerable<T>> { public bool Equals(IEnumerable<T> x, IEnumerable<T> y) { for(int i = 0; i<x.Count();i++){ if(!Object.Equals(x.ElementAt(i), y.ElementAt(i))){ return false; } } return true; } public int GetHashCode(IEnumerable<T> obj) { if (obj == null) return 0; return unchecked(obj.Select(e => e.GetHashCode()).Aggregate(0, (a, b) => a + b)); } } Here is my data I'm using to test this Equals method. static void Main(string[] args) { Car car1 = new Car(); car1.make = "Toyota"; car1.model = "xB"; Car car2 = new Car(); car2.make = "Toyota"; car2.model = "xB"; List<Car> l1 = new List<Car>(); List<Car> l2 = new List<Car>(); l1.Add(car1); l2.Add(car2); IEnumerableComparer<Car> seq = new IEnumerableComparer<Car>(); bool b = seq.Equals(l1, l2); Console.Write(b); //always says false Console.Read(); } } Car class class Car { public String make { get; set; } public String model { get; set; } }

    Read the article

  • How do I get the Math equation of Python Algorithm?

    - by Gabriel
    ok so I am feeling a little stupid for not knowing this, but a coworker asked so I am asking here: I have written a python algorithm that solves his problem. given x 0 add all numbers together from 1 to x. def fac(x): if x > 0: return x + fac(x - 1) else: return 0 fac(10) 55 first what is this type of equation is this and what is the correct way to get this answer as it is clearly easier using some other method?

    Read the article

  • importing modules in app engine

    - by tanky
    Ive asked this before, but it seems i wasnt clear/detailed enough and after a week of trying im still struggling so i will try again. i am trying to use, oauth2 and ply on app engine. i have tried copying their directories into my app engine project directory (in the form ply-3.4 or brosner-python-oauth2-82a05f9) and i have tried copying the specific sub directory contained within the aforemention one. (ply or oauth2) i have tried saying import oauth2, from brosner-oauth2_python-82a05f9 import oauth and other variations on the theme, but i still cant get it to work nothing has worked. i have tried including them in app.yaml, but that seemed to create an even bigger error as my entire project wouldnt even run when i tried that. and now i have run out of things to try. the error log i am getting is as follows. INFO 2012-10-20 22:33:29,358 dev_appserver.py:2884] "GET / HTTP/1.1" 500 - WARNING 2012-10-20 22:33:58,453 py_zipimport.py:139] Can't open zipfile C:\Python27\lib\site-packages\oauth2-1.0.2-py2.7.egg: IOError: [Errno 13] file not accessible: 'C:\Python27\lib\site-packages\oauth2-1.0.2-py2.7.egg' WARNING 2012-10-20 22:33:58,453 py_zipimport.py:139] Can't open zipfile C:\Python27\lib\site-packages\ply-3.4-py2.7.egg: IOError: [Errno 13] file not accessible: 'C:\Python27\lib\site-packages\ply-3.4-py2.7.egg' WARNING 2012-10-20 22:33:58,453 py_zipimport.py:139] Can't open zipfile C:\Python27\lib\site-packages\tweepy-1.11-py2.7.egg: IOError: [Errno 13] file not accessible: 'C:\Python27\lib\site-packages\tweepy-1.11-py2.7.egg' ERROR 2012-10-20 22:34:00,015 wsgi.py:189] Traceback (most recent call last): File "C:\Program Files\Google\google_appengine\google\appengine\runtime\wsgi.py", line 187, in Handle handler = _config_handle.add_wsgi_middleware(self._LoadHandler()) File "C:\Program Files\Google\google_appengine\google\appengine\runtime\wsgi.py", line 225, in _LoadHandler handler = import(path[0]) File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1850, in load_module return self.FindAndLoadModule(submodule, fullname, search_path) File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1722, in FindAndLoadModule description) File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 676, in Decorate return func(self, *args, **kwargs) File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver_import_hook.py", line 1665, in LoadModuleRestricted description) File "C:\Documents and Settings\ladds\My Documents\udacity\sigh\main.py", line 3, in import ply ImportError: No module named ply INFO 2012-10-20 22:34:00,030 dev_appserver.py:2884] "GET / HTTP/1.1" 500 - thanks for any help.

    Read the article

  • Problem setting row backgrounds in Android Listview

    - by zchtodd
    I have an application in which I'd like one row at a time to have a certain color. This seems to work about 95% of the time, but sometimes instead of having just one row with this color, it will allow multiple rows to have the color. Specifically, a row is set to have the "special" color when it is tapped. In rare instances, the last row tapped will retain the color despite a call to setBackgroundColor attempting to make it otherwise. private OnItemClickListener mDirectoryListener = new OnItemClickListener(){ public void onItemClick(AdapterView parent, View view, int pos, long id){ if (stdir.getStationCount() == pos) { stdir.moreStations(); return; } if (playingView != null) playingView.setBackgroundColor(Color.DKGRAY); view.setBackgroundColor(Color.MAGENTA); playingView = view; playStation(pos); } }; I have confirmed with print statements that the code setting the row to gray is always called. Can anyone imagine a reason why this code might intermittently fail? If there is a pattern or condition that causes it, I can't tell. I thought it might have something to do with the activity lifecycle setting the "playingView" variable back to null, but I can't reliably reproduce the problem by switching activities or locking the phone. private class DirectoryAdapter extends ArrayAdapter { private ArrayList<Station> items; public DirectoryAdapter(Context c, int resLayoutId, ArrayList<Station> stations){ super(c, resLayoutId, stations); this.items = stations; } public int getCount(){ return items.size() + 1; } public View getView(int position, View convertView, ViewGroup parent){ View v = convertView; LayoutInflater vi = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); if (position == this.items.size()) { v = vi.inflate(R.layout.morerow, null); return v; } Station station = this.items.get(position); v = vi.inflate(R.layout.songrow, null); if (station.playing) v.setBackgroundColor(Color.MAGENTA); else if (station.visited) v.setBackgroundColor(Color.DKGRAY); else v.setBackgroundColor(Color.BLACK); TextView title = (TextView)v.findViewById(R.id.title); title.setText(station.name); return v; } };

    Read the article

  • Java Interger: what is faster comparison or subtraction?

    - by Vladimir
    I've found that java.lang.Ingteger implementation of compareTo method looks as follows: public int compareTo(Integer anotherInteger) { int thisVal = this.value; int anotherVal = anotherInteger.value; return (thisVal<anotherVal ? -1 : (thisVal==anotherVal ? 0 : 1)); } The question is why use comparison instead of subtraction: return thisVal - anotherVal;

    Read the article

  • Select where and where not

    - by Simon
    I have a table containing lessons that I called "cours" (french) and I have several cours inside and I have linked them to students with a table between them to see if they go to the lessons or not. I would like to return data with the SELECT and the data that are NOT select. So, If one student follow 3 courses of 5, I would like to return the 3 courses that he follow and the 2 courses that he doesn't follow. Is there a way to do it ?

    Read the article

  • add a decorate function to a class

    - by wiso
    I have a decorated function (simplified version): class Memoize: def __init__(self, function): self.function = function self.memoized = {} def __call__(self, *args, **kwds): hash = args try: return self.memoized[hash] except KeyError: self.memoized[hash] = self.function(*args) return self.memoized[hash] @Memoize def _DrawPlot(self, options): do something... now I want to add this method to a pre-esisting class. ROOT.TChain.DrawPlot = _DrawPlot when I call this method: chain = TChain() chain.DrawPlot(opts) I got: self.memoized[hash] = self.function(*args) TypeError: _DrawPlot() takes exactly 2 arguments (1 given) why doesn't it propagate self?

    Read the article

  • Add jquery link to returned text...

    - by Jerry
    Hi all I am trying to add two jquery plugins files to my application. When a user triggers my ajax event, the server will return text with a form button. The plugins (a jquery calendar) will work when the user clicks the form button inside the returned text . I believe I have to add the link inside the return text instead of the main page to let the code work, but not sure how to do this. I am giving out my code and need you experts opinions. Thanks. My main page html //required jquery plugins ...didn't work if I add them in the main application. <script type="text/javascript" src="JS/date.js"></script> <script type="text/javascript" src="JS/datePicker.js"></script> <script type="text/javascript" src="JS/selectWeek.js"></script> <div id="gameInfo"> //return text will be displayed here. </div> My returned text ...part of it.... <form> <div id=returnDiv> // the form input will be added here when a user clicks #addMatch button... </div> <tr> <td><input type="button" id="addMatch" name="addMatch" value="Add Match"/> </td> </tr> </form> My jquery $("#addMatch").live('click', function(){ //the code below will create a calender when a user click the link...I am not sure //where I should add my two jquery plugins link... $("#returnDiv").html("<td><input type='text' size='6' class='date-pick dp-applied'"+ "name='date'><a style='color:white;' class='dp-choose-date' title='Choose Date'"+ "href='#'>Date</a></td>"; return false; }); I hope I explain my question well. +1 to any reply...:D

    Read the article

  • Mapping @OneToOne with @Where clause

    - by Gabriel
    I am trying to map an entity as following @OneToOne(mappedBy = "localizedLabel") @JoinColumn(insertable = false, updatable = false) @WhereJoinTable(clause = "locale='en_US'") public Localization getEn_US() { return en_US; } I can assure that the data will return only one or null if the not found, but hibernate seems to ignore my @Where clause: ERROR com.eventtouch.bc.business.core.log.LoggingInterceptor - org.hibernate.HibernateException: More than one row with the given identifier was found: 4211, for class: com.eventtouch.bc.business.domain.LocalizedLabel Any ideas on ho to map a @OneToOne relationship with @Where clause? Thanks

    Read the article

  • Django + Ajax

    - by Joe
    So, I am just starting to use jQuery with one of my Django projects, but I have a pretty noobie question. In a django view you have to return an HttpResponse object from the view, but sometimes I don't need to return anything. For instance, I might just be updating the database via ajax and don't need to send anything back. So my question is, what do you do in that situation? Thanks

    Read the article

  • Rule of presidence == over =

    - by robUK
    Hello, I am just wondering would it be better to do this: if((fd = (open(filename, O_RDWR)) == -1)) { fprintf(stderr, "open [ %s ]\n", strerror(errno)); return 1; } or this fd = open(filename, O_RDWR); if((fd == -1) { fprintf(stderr, "open [ %s ]\n", strerror(errno)); return 1; } Many thanks for any suggestions,

    Read the article

  • Lisp's "some" in Python?

    - by Mark Probst
    I have a list of strings and a list of filters (which are also strings, to be interpreted as regular expressions). I want a list of all the elements in my string list that are accepted by at least one of the filters. Ideally, I'd write [s for s in strings if some (lambda f: re.match (f, s), filters)] where some is defined as def some (pred, list): for x in list: res = pred (x) if res: return res return False Is something like that already available in Python, or is there a more idiomatic way to do this?

    Read the article

  • Trouble using South with Django and Heroku

    - by Dan
    I had an existing Django project that I've just added South to. I ran syncdb locally. I ran manage.py schemamigration app_name locally I ran manage.py migrate app_name --fake locally I commit and pushed to heroku master I ran syncdb on heroku I ran manage.py schemamigration app_name on heroku I ran manage.py migrate app_name on heroku I then receive this: $ heroku run python notecard/manage.py migrate notecards Running python notecard/manage.py migrate notecards attached to terminal... up, run.1 Running migrations for notecards: - Migrating forwards to 0005_initial. > notecards:0003_initial Traceback (most recent call last): File "notecard/manage.py", line 14, in <module> execute_manager(settings) File "/app/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager utility.execute() File "/app/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/app/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv self.execute(*args, **options.__dict__) File "/app/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute output = self.handle(*args, **options) File "/app/lib/python2.7/site-packages/south/management/commands/migrate.py", line 105, in handle ignore_ghosts = ignore_ghosts, File "/app/lib/python2.7/site-packages/south/migration/__init__.py", line 191, in migrate_app success = migrator.migrate_many(target, workplan, database) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 221, in migrate_many result = migrator.__class__.migrate_many(migrator, target, migrations, database) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 292, in migrate_many result = self.migrate(migration, database) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 125, in migrate result = self.run(migration) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 99, in run return self.run_migration(migration) File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 81, in run_migration migration_function() File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 57, in <lambda> return (lambda: direction(orm)) File "/app/notecard/notecards/migrations/0003_initial.py", line 15, in forwards ('user', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['auth.User'])), File "/app/lib/python2.7/site-packages/south/db/generic.py", line 226, in create_table ', '.join([col for col in columns if col]), File "/app/lib/python2.7/site-packages/south/db/generic.py", line 150, in execute cursor.execute(sql, params) File "/app/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute return self.cursor.execute(sql, params) File "/app/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 44, in execute return self.cursor.execute(query, args) django.db.utils.DatabaseError: relation "notecards_semester" already exists I have 3 models. Section, Semester, and Notecards. I've added one field to the Notecards model and I cannot get it added on Heroku. Thank you.

    Read the article

  • C child read giving "resource temporarily unavailable"

    - by Gary
    So I have a file stream from a parent process to a child - and most of the time it works fine. However, when reading from it multiple times quickly, using fgets() will return NULL and the error is set to "resource temporarily unavailable". The problem is intermittent - and running the script that does the reads will sometimes have fgets return NULL and sometimes wont. Could anyone help me stop this error from happening? Thanks!

    Read the article

  • Python/YACC Lexer: Token priority?

    - by Rosarch
    I'm trying to use reserved words in my grammar: reserved = { 'if' : 'IF', 'then' : 'THEN', 'else' : 'ELSE', 'while' : 'WHILE', } tokens = [ 'DEPT_CODE', 'COURSE_NUMBER', 'OR_CONJ', 'ID', ] + list(reserved.values()) t_DEPT_CODE = r'[A-Z]{2,}' t_COURSE_NUMBER = r'[0-9]{4}' t_OR_CONJ = r'or' t_ignore = ' \t' def t_ID(t): r'[a-zA-Z_][a-zA-Z_0-9]*' if t.value in reserved.values(): t.type = reserved[t.value] return t return None However, the t_ID rule somehow swallows up DEPT_CODE and OR_CONJ. How can I get around this? I'd like those two to take higher precedence than the reserved words.

    Read the article

  • Tuples vs. Anonymous Types vs. Expando object. (in regards to LINQ queries)

    - by punkouter
    I am a beginner who finally started understanding anonymous types. (see old post http://stackoverflow.com/questions/3010147/what-is-the-return-type-for-a-anonymous-linq-query-select-what-is-the-best-way-t) So in LINQ queries you form the type of return value you want within the linq query right? It seems the way to do this is anonymous type right? Can someone explain to me if and when I could use a Tuple/Expando object instead? They all seem very simliar?

    Read the article

  • A python code to convert a number from any base to the base of 10 giving errors . What is wrong with this code?

    - by mekasperasky
    import math def baseencode(number, base): ##Converting a number of any base to base10 if number == 0: return '0' for i in range(0,len(number)): if number[i]!= [A-Z]: num = num + number[i]*pow(i,base) else : num = num + (9 + ord(number[i])) *pow(i,base) return num a = baseencode('20',5) print a Errors I get are Traceback (most recent call last): File "doubtrob.py", line 19, in <module> a = baseencode('20',5) File "doubtrob.py", line 13, in baseencode if number[i]!= [A-Z]: NameError: global name 'A' is not defined

    Read the article

  • Get size of max possible result set

    - by wheresrhys
    For my application most of my SQL queries return a specified number of rows. I'd also like to get the maximum possible number of results i.e. how many rows would be returned if I wasn't setting a LIMIT. Is there a more efficient way to do this (using just SQL?) than returning all the results, getting the size of the result set and then splicing the set to return just the first N rows.

    Read the article

  • Get Token's Name with Reflection API.

    - by Mark Tomlin
    I want to find the token's name passed by augment into a function. class Norm { const STR_NORM = 0; const INT_NORM = 0; } function foo($Arg1, $Arg2 = NULL) { getConstName($Arg1); # Should Return STR_NORM; return $Arg1, $Arg2; } echo foo(Norm::STR_NORM); Is there any way to implement getConstName via the PHP Reflection API?

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 267 268 269 270 271 272 273 274 275 276 277 278  | Next Page >