Search Results

Search found 13534 results on 542 pages for 'python 2 x'.

Page 476/542 | < Previous Page | 472 473 474 475 476 477 478 479 480 481 482 483  | Next Page >

• How can I convert a C# list into something that's hashable?

  - by gatoatigrado

  I want something along the lines of Python's tuples (or, for sets, frozensets), which are hashable. I have a List<String> which is most certainly not hashing correctly (i.e. by value).

  Read the article

• Jython: is there a clean way to implement a Java interfaces with function references?

  - by auramo

  I know that I can implement a Java interface with Jython like this: class MyListener (Listener): def foo(self, event): print(str(event)) Python has first-class functions so that seems like an overkill - especially for interfaces with one method. Is there a way to just pass a lambda or function which implements a single method in an interface instead?

  Read the article

• New interesting languages

  - by wvd

  Hello all, I've been programming for 4 years now and I feel it's time for a new language. I've been doing Python, Java and some C++/Erlang/Haskell along those 4 years but I'm looking for a new language. I'm mainly looking for one which I could use later when I'm getting hired, but it also needs to be relatively new. Any ideas? Thanks, William van Doorn

  Read the article

• Hidden limitations of Google App Engine?

  - by Kyle Cronin

  I've been looking into writing a web app that will run on Google App Engine, but before I commit myself to the platform I'd like to know what, if any, limitations there are. I'm aware of the basic CPU/bandwidth restrictions that Google places on the free service, but I'm wondering more about development restrictions like how BigTable compares to a standard relational database and what Python libraries aren't available on the GAE platform (and what alternatives Google provides). Basically I'm looking for any hidden roadblocks before I commit to the platform. Thanks for your help!

  Read the article

• extract/slice/reorder lists in (emacs) lisp?

  - by Stephen

  In python, you might do something like i = (0, 3, 2) x = [x+1 for x in range(0,5)] operator.itemgetter(*i)(x) to get (1, 4, 3). In (emacs) lisp, I wrote this function called extract which does something similar, (defun extract (elems seq) (mapcar (lambda (x) (nth x seq)) elems)) (extract '(0 3 2) (number-sequence 1 5)) but I feel like there should be something built in? All I know is first, last, rest, nth, car, cdr... What's the way to go? ~ Thanks in advance ~

  Read the article

• Can an algorithmic process ever give true random numbers ?

  - by Arkapravo

  I have worked with random functions in python,ruby, MATLAB, Bash and Java. Nearly every programming language has a function to generate Random numbers. However, these apparently random sequences are termed as pseudo-random number sequences as the generation follows a deterministic approach, and the sequence seems to repeat (usually with a very large period). My question, can an algorithmic/programming process ever yield true random numbers ? The questions probably is more of theoretical computer science than just programming !

  Read the article

• Why does PHP have a bad rep?

  - by ggfan

  I have read a few questions here where people say that PHP is not the 'best' language for web development compared to python, ruby. What about PHP makes it have such a bad rep?

  Read the article

• Exception RuntimeError

  - by apoorva

  Hi... I am getting 2 following errors: Exception RuntimeError: 'maximum recursion depth exceeded in subclasscheck' in ignored Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in ignored What is the cause for the same.... I have not made any changes to my application since yesterday.... Suddenly today it is giving me this error.... Can upgrading the IE version cause this problem to occur???

  Read the article

• How to use HTTP method DELETE on Google App Engine?

  - by Jader Dias

  I can use this verb in the Python Windows SDK. But not in production. Why? What am I doing wrong? The error message includes (only seen via firebug or fiddler) Malformed request or something like that My code looks like: from google.appengine.ext import db from google.appengine.ext import webapp class Handler(webapp.RequestHandler): def delete(self): key = self.request.get('key') item = db.get(key) item.delete() self.response.out.write(key)

  Read the article

• Sikuli List of Functions & Operators

  - by PPTim

  Hello, I've just discovered Sikuli, and would like to see a comprehensive functions list without digging through the online-examples and demos. Has anyone found such a list? Furthermore, apparently Sikuli supports more complex loops and function calls as well, and seems to be based in Python(!!). Examples would be great. Thanks.

  Read the article

• How to get the MD5 hex hash for a file using VBA?

  - by aF

  How can I get the MD5 hex hash for a file using VBA? I need a version that works for a file. Something as simple as this Python code: import hashlib def md5_for_file(fileLocation, block_size=2**20): f = open(fileLocation) md5 = hashlib.md5() while True: data = f.read(block_size) if not data: break md5.update(data) f.close() return md5.hexdigest() But in VBA.

  Read the article

• Which language should I learn?

  - by Alex

  I am already pretty good at PHP and now want to expand my knowledge to desktop programming.. which language would be: The one's I'm mainly looking into are: Java, C#, C++, Python 1) Easier to learn? 2) Most suitable for Making 3D games and applications with sockets? One more thing - Although I'm looking to code for Windows, I may also want to do a bit of programming for Mac OS after a while.

  Read the article

• Should I consider Erlang for web mvc?

  - by gotts

  Can I do that? I'm afraid that this can be an overkill and eventually I'll end up with much less productivity than with traditional stack like Ruby/Python/you name it. I understand that you will start with much lower productivity if you start to work with new technology but .. is it potentially worth trying and finally switch to Erlang as the only tool for web development and all the backend stuff. Or is Erlang more suitable for only some high performance backend tasks?

  Read the article

• What does ancestor mean in the google app engine datastore.

  - by M.A. Cape

  Can anyone tell or define more what is "ancestor" and give an example on it and also what it is for? I just can't grasp what it really is. Reference: http://code.google.com/appengine/docs/python/datastore/queryclass.html#Query_ancestor Thanks.

  Read the article

• Imap protocol In Java

  - by jacksparrow2012

  Where can I get an opensource library written in java, especially for imap protocol. For Example: there is imaplib in python likewise is there anything else in java to replace that "imaplib"

  Read the article

• What Java/Scala or .NET web frameworks support modify source code and instantly run workflow e.i. wi

  - by Alexey

  As far as I can see the key advantage of dynamic languages like Ruby or Python over Java/Scala/C# etc is "hot" applying of your changes to source code to the running application. What are the frameworks for JVM or .NET that support the same workflow - apply changes to configuration and source code on the fly? Can they also watch changes to custom configurations and notify application? Note: Frameworks for dynamic languages on JVM/.NET like Grails or Compojure are out of scope here.

  Read the article

• im writing a spellchecking program, how do i replace ch in a string..eg..

  - by Ajay Hopkins

  what am i doing wrong/what can i do?? import sys import string def remove(file): punctuation = string.punctuation for ch in file: if len(ch) > 1: print('error - ch is larger than 1 --| {0} |--'.format(ch)) if ch in punctuation: ch = ' ' return ch else: return ch ref = (open("ref.txt","r")) test_file = (open("test.txt", "r")) dictionary = ref.read().split() file = test_file.read().lower() file = remove(file) print(file) p.s, this is in Python 3.1.2

  Read the article

• How to activate Mac OS X application with a given process ID?

  - by Olivier

  I know the process id of an application in Mac OS X. How can I switch to it (using applescript, or python, or whatever)? By "switch", I mean, put in focus. The usual solution is to use the applescript code tell application "Foo" activate, but here the name is not useful because I have many instances of the same application running. I am however able to get the process id of the application. How can I switch to this application programmatically?

  Read the article

• Instantiate a model when the kind of model needed is represented as a string argument

  - by indiehacker

  My input data is a string representing the kind of datastore model I want to make. In python, I am using the eval() function to instantiate the model (below code), but this seems overly complex so I was wondering if there is a simpler way people normally do this? >>>model_kind="TextPixels" >>>key_name_eval="key_name" >>>key_name="key_name" >>>kwargs {'lat': [0, 1, 2, 3], 'stringText': 'boris,ted', 'lon': [0, 1, 2, 8], 'zooms': [0, 10]} >>>obj=eval( model_type + '(key_name='+tester+ ',**kwargs )' ) >>>obj <datamodel.TextPixels object at 0xed8808c>

  Read the article

• Easy way to convert regex to a java compatible regex?

  - by beagleguy

  hi all I have a regex defined in python/ruby/php that is like this "(forumdisplay.php\?.*page=%CURRENTPAGE%)" when I do it for java, I have to double escape that question mark to //? like so: "(forumdisplay.php\\?.*page=%CURRENTPAGE%)"; is there a function I can use to do that automatically? or would I need to change all my regexes over to work with the java regex engine? thanks

  Read the article

• How to design a command line program reusable for a future development of a GUI?

  - by systempuntoout

  What are some best practices to keep in mind when developing a script program that could be integrated with a GUI, probably by somebody else, in the future? Possible scenario: i develop a fancy python CLI program that scrapes every unicorn images from the web i decide to publish it on github a unicorn fan programmer decides to take the sources and build a GUI on them. he\she gives up because my code is not reusable How do i avoid step four and let unicorn fan programmer build his\her GUI without hassle?

  Read the article

• On what platform did these popular programming languages originate?

  - by speciousfool

  Perhaps you know the story of HTTP and HTML being developed on a NeXT computer. I am curious which platform served as the first home for these programming languages: Ada C C++ C# D Erlang Fortran Haskell Java Javascript Lisp Logo MATLAB ML Perl PHP Prolog Python R Ruby Scheme SQL Smalltalk I thought it might be interesting to reflect on how the machine and operating environment lead to different design decisions. Or to see if some architecture or operating system variant was particularly fruitful for programming language development. A question for the historians among us.

  Read the article

• Basic Google search using a shell script

  - by Lri

  Something like this but using just basic shell scripting: #!/usr/bin/env python import urllib import json base = 'http://ajax.googleapis.com/ajax/services/search/web?v=1.0&' query = urllib.urlencode({'q' : "something"}) response = urllib.urlopen(base + query).read() data = json.loads(response) print data['responseData']['results'][0]['url'] Any more convenient alternatives to ajax.googleapis.com? If not, how should you encode the URL and parse JSON?

  Read the article

• How to generate correlated binary variables

  - by jonalm

  Dear All I need to generate a series of N random binary variables with a given correlation function. Let x = {x_i} be a series of binary variables (taking the value 0 or 1, i running form 1 to N). The marginal probability is given Pr(x_i = 1) = p, and the values should be correlated in the following way E[ x_i x_j ] = const * |i-j|^-alfa where alfa is a positive number. Is it possible to generate a series like this? preferably in python.

  Read the article

• How can I use linq to initialize an array of repeated elements?

  - by Eric

  At present, I'm using something like this to build a list of 10 objects: myList = (from _ in Enumerable.Range(0, 9) select new MyObject {...}).toList() This is based off my python background, where I'd write: myList = [MyObject(...) for _ in range(10)] Note that I want my list to contain 10 instances of my object, not the same instance 10 times. Is this still a sensible way to do things in C#? Is there a cost to doing it this way over a simple for loop?

  Read the article

< Previous Page | 472 473 474 475 476 477 478 479 480 481 482 483  | Next Page >