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[Magnumcannon]

Alright, now i'm trying to use curses on python 2.7. I downloaded UniCurses and i put the pdcurses.dll file in the same folder (site-packages) as unicurses.py. It's not working, for some reason, and everytime i try to import unicurses, i get this:

Spoiler (click to show/hide)

Fatal error: can't find pdcurses.dll for linking, make sure PDCurses v3.4+ is in the same folder as UniCurses if you want to use UniCurses on a win32 platform.

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\site-packages\unicurses.py", line 54, in <module>
    raise ImportError("UniCurses initialization error - pdcurses.dll not found.")
ImportError: UniCurses initialization error - pdcurses.dll not found.

I have no idea what's going on. I tried putting the .dll on the DLLs folder, but it didn't work either.
EDIT: I also found that i could install it with .whl ...but it says it does not support Unicode characters. And i want my ASCII characters 

You need to have the pdcurses dll and py in the some folder as the project, or in the Python directory (I think? Maybe not), or somewhere else but pointed to in the Path environment variable.

I could get it working by putting the .dll in the folders i work on, but i couldn't get it working by pointing to it in the environment variables. At least that's something 

[Lightningfalcon]

So I have an array of Object pointers, which can be one of two different classes derived from Object. Object has a virtual function, intersect, which in Object has no parameters, but in both the derived classes have the same parameters, just different implementations. I want to be able to go down the array, calling intersect each time without having to worry about checking which class it is.
 Problem is that whenever I try to call the intersect function I get "No matching function for call", and it says that it expects 0 arguments instead of the 4 in the derived classes. I try to make it into a pure virtual function in the base, but since I can't have an array of pointers to an abstract class, that doesn't work. I look it up on Stack overflow and the only thing that I can get results on is name hiding, but that seems to come from people trying to use the method in the base class. Still tried the recommended solution of inserting "using base: method", but that doesn't do anything, again.

 Basic structure is-
class Object
{
    public:
    virtual int intersect() {};
}
class thing: public Object
{
   public:
   int intersect(double, double, double, double)
}
class thing2: public Object
{
   public:
   int intersect(double, double, double, double)
}

obj = new Object*[numObj]
tempThing = new thing();
obj[0] = tempThing;
obj[0]->intersect(double, double, double, double);

[Reelya]

The problem is that the Object class doesn't have the parameters included in the intersect function. C++ allows name overloading, as long as the parameters can be determined. C++ does this by generating an internal "name" that adds info about the parameters to the normal name, so "intersect, which takes zero parameters" is not understood to be connected in any way to "intersect, which takes four doubles".  Another way to look at it is that the parent is the interface you're using, and that interface does not specify four doubles as allowed parameters for "intersect".

Your existing "thing" class therefore has two completely unconnected "intersect" functions:

tempThing->intersect(); // this calls the one from "Object"
tempThing->intersect(1,2,3,4);  // this calls the one from "thing"

So you just need the parameters to match and it will know what want.

Another trick is "pure virtual" functions. You replace the {} in the parent with = 0. What this does is it omits the base-classes function body. Any class with an empty function body cannot be created, so you can't create the base class (often what you want) and it will give a compiler error if you make a derived class from "Object" but forget to add it's own "intersect" function, which is a very helpful reminder.

class Object
{
    public:
    virtual int intersect(double, double, double, double) = 0;
}

[cerapa]

*snip*

Yeah, like Reelya said.

intersect() != intersect(double, double, double, double)

As far as the complier is concerned, the only things they have in common is that they are both functions.

[Magnumcannon]

In java, you have the System.out.print, which would print stuff in the same line. Is there something similar in python? I want part of the print to only be print if a certain condition is met. And that in a single line.

EDIT: After a not-so-long search, i found out that i could simply add a ',' to the end.

[TheBiggerFish]

I thought I was dealing with looping.


It turned out that I was recursing to the main method through the empty constructor of an object I had coded.


I have no idea what possessed me to write that.


Well, at least I've solved it!  Maybe!

[Orange Wizard]

In java, you have the System.out.print, which would print stuff in the same line. Is there something similar in python? I want part of the print to only be print if a certain condition is met. And that in a single line.

EDIT: After a not-so-long search, i found out that i could simply add a ',' to the end.

You can also use the end argument to replace the default new line, like so:

Code: [Select]

print (x, end="whatever")
This is useful where you want multiple print statements.

[3man75]

Hey guys have you run into this bug?

Spoiler (click to show/hide)

cout << "Have a happy thanks giving. " << end;

//JK No actual bug

[MagmaMcFry]

Hey guys have you run into this bug?

Spoiler (click to show/hide)

cout << "Have a happy thanks giving. " << end;

//JK No actual bug

A happy compile-time error to you too!

[Bumber]

Hey guys have you run into this bug?

Spoiler (click to show/hide)

cout << "Have a happy thanks giving. " << end;

//JK No actual bug

It's probably the smiley. IDEs tend not to like those. You can get rid of them by using [code] or [nobbc] tags. :D

On a related note, I wasted a bunch of time a week ago trying to figure out what was wrong with some code I copy-pasted from the instructor. Turns out the -'s were actually the extended ASCII character "soft hyphen", changing every n-1 into n1 for Visual Studio, but not in Notepad++ (which I saved it and fixed the indenting with.) I did a search and replace AD → 2D using Notepad++'s hex-editor plugin, and that fixed it.

[Bauglir]

On a related note, I wasted a bunch of time a week ago trying to figure out what was wrong with some code I copy-pasted from the instructor. Turns out the -'s were actually the extended ASCII character "soft hyphen", changing every n-1 into n1 for Visual Studio, but not in Notepad++ (which I saved it and fixed the indenting with.) I did a search and replace AD → 2D using Notepad++'s hex-editor plugin, and that fixed it.

i know your pain

smart quotes are a special kind of hell if you don't know what they are

[Telgin]

Smart quotes... oh, how I'd forgotten about those.

We had incessant problems with those in our ticket tracking software.  It would take incoming emails and convert them into HTML, complete with lots of gibberish everywhere there was a " or ' character.  It took us ages to figure out exactly how to reprocess those into the simple character and not madness inserted by Outlook from the user's clients.

[Orange Wizard]

Smart quotes are basically Satan.

[3man75]

Didn't think a basic string could do that if I typed in a

Attempting to fix it..
...

Ran it in my Visual studios compiler an it checks out.

Do compilers matter or am i just not able to replicate this for another reason?

EDIT: It's 12:46 and i'm discussing something so trivial. Magma how'd you copy that?

[MagmaMcFry]

You wrote "end", not "endl". That's the compile-time error I get when I run it through cpp.sh.