checkmate | Fast and versatile argument checks
kandi X-RAY | checkmate Summary
kandi X-RAY | checkmate Summary
Fast and versatile argument checks for R. Ever used an R function that produced a not-very-helpful error message, just to discover after minutes of debugging that you simply passed a wrong argument?. Blaming the laziness of the package author for not doing such standard checks (in a dynamically typed language such as R) is at least partially unfair, as R makes theses types of checks cumbersome and annoying. Well, that's how it was in the past. Virtually every standard type of user error when passing arguments into function can be caught with a simple, readable line which produces an informative error message in case. A substantial part of the package was written in C to minimize any worries about execution time overhead. Furthermore, the package provides over 30 expectations to extend the popular testthat package for unit tests.
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QUESTION
I'm implementing chess on Python (not the best choice however) using pygame. To find moves, I use the standard pair minimax + alpha pruning, minimax is a recursive search tree so program most of the time will do this part.
ANSWER
Answered 2021-May-18 at 05:27When a pygame program fails to call pygame.event.get() or pygame.event.pump() for a long time, the operating system thinks that the program is crashed.
There are important things that must be dealt with internally in the event queue. The main window may need to be repainted or respond to the system. If you fail to make a call to the event queue for too long, the system may decide your program has locked up.
From https://www.pygame.org/docs/ref/event.html#pygame.event.pump
If you make sure to call pygame.event.pump() occasionally in the minimax function, the OS won't think your program has crashed. So you'll be able to click on the window without getting "This window is not responding" or anything.
Hopefully this gets your problem, and it isn't something else.
QUESTION
ANSWER
Answered 2021-Apr-17 at 11:30Your setup currently has a gradient over the carousel that goes from 90% black on the left to transparent on the right (so the left side of the image is almost black). The problem is, while the carousel is stationary, the caption is easy to read, when the slides are transitioning, the caption drops to below the gradient.
I think this is because when the carousel item is moving, it’s moving because it’s set to: transform: translateX(100%);’ When an element has transform set to anything other than none,` it creates a new stacking context.
What about applying the gradient to the carousel-items? I modified your code to use a separate gradient on each image so you can see the effect.
The carousel-caption divisions use position absolute with a z-index of 1, so when stationary, the text is over the gradient, but for reasons I don’t understand, the text moves below the gradient during transitions, but is above the gradient when stationary.
QUESTION
I've got a spreadsheet with multiple queries to an ODBC connection name of "CHECKMATE". In VBA "ThisWorkbook" object, I have the following VBA:
...ANSWER
Answered 2021-Apr-01 at 16:42Untested, but I'm guessing you need to check the Type of the connection.
Also, using the .Name of the connection is unnecessary, i.e.
QUESTION
I have implemented a NegaMax algorithm (which is just a shorter version of minimax algorithm) with alpha beta pruning . Now I want to implement Iterative Deepening so that I can find a best move for every depth and then reorder the the nodes under the tree based on the scores of the previous layers so that my alphabeta pruning works more efficiently.
Here's what I have done so far:
...ANSWER
Answered 2021-Mar-08 at 07:10As I see it you have 2 questions which I will try to answer:
- How can I add the time constraint function to this code so that it only returns the best move when the the mentioned time gets over and not before that.
So you want to search for a certain number of seconds each move instead of searching for a specific depth? This is very easy to implement, all you have to do is make the iterative deepening go to some large depth and then compare the current time with the search start time each x number of nodes. Something like this:
QUESTION
I'm trying to develop a minimax algorithm to play 1D chess which I'm considering the following: 8 squares aligned, 1 king, 1 knight, and 1 rook. King and rook move in the usual way and the knight moves 2 squares at a time. Additionally, it is a draw if stalemate or it's impossible to make a checkmate (only 2 kings or 2 kings and an additional knight) or 8 moves are made without the number of pieces being reduced.
These are the functions of the game itself.
...ANSWER
Answered 2021-Feb-14 at 15:47The problem was that the way I was using depth doesn't work. It should be at the beginning (in the base case). I think the problem is solved.
QUESTION
I am creating a chess engine with a reset function. I also have a feature where the screen doesn't allow the user to make any more moves after checkmate or stalemate.
However, if i execute my reset function after this, my game stays frozen.
I have two files in my code, my engine and my main. I'm quite sure this is something to do with my main file, however I have put in the engine just in case.
Here they are:
Main (ChessMate.py):
...ANSWER
Answered 2020-Nov-28 at 18:11Once gameOver is set to True, there are no code paths by which it can become False ever again.
Probably you just need to add it to the r reset handler:
QUESTION
I am making a chess program and I am working on the user UI. One of the things I am working on is the piece animation. I have two files: My chess Engine (irrelevant for this but I have provided just in case) and my main file. Here they are:
Main File:
...ANSWER
Answered 2020-Nov-27 at 21:22You missed to handle the events in the animation loop. See pygame.event.get() respectively pygame.event.pump():
For each frame of your game, you will need to make some sort of call to the event queue. This ensures your program can internally interact with the rest of the operating system.
For instance:
QUESTION
I have a bash script that renames certain text files according to their content. A file with the following content e.g. should be renamed to 2020-05-11_Chess-com.txt.
ANSWER
Answered 2020-Aug-13 at 09:39Your code looks fine but i'd suggest some improvements
QUESTION
I am attempting to make a chess game from scratch and made significant progress over the past couple of months. However, I recently got stuck on a problem that I just cannot figure out how to solve.
CODE (UPDATED)
Since the source code is too large to post here, I think it is best to leave a link to my GitHub account where it can be found: https://github.com/lbragile/chessCAMO
DESCRIPTION
Chess
Contains relevant game flags and turn tracking, as well as keeps a stack of the board positions to allow a player to undo moves.
Piece
Contains the piece's:
- square ([0,63])
- move information (for castling and initial pawn moves)
- type
- color
Piece Type classes
Includes:
- Pawn
- Knight
- Bishop
- Rook
- Queen
- King
- Empty (for blank squares)
These inherit from the base class (Piece)
QUESTION
With this set up, Chess and Piece are separate classes (one is not derived from the other). However, to keep track of the board positions in a stack, the Chess class uses the member variable:
...ANSWER
Answered 2020-Jul-03 at 01:04I managed to solve the problem by serializing/de-serializing the Chess object's private members to a file.
The way I did this was by making a separate folder which stores these files and added a move counting private member to Chess. Then I added the serializing functionality using the overloaded extraction and insertion operators:
chess.h
QUESTION
I'm new to R functions and so far i would check arguments like:
...ANSWER
Answered 2020-Jun-28 at 17:54I suggest either an allowlist or denylist, depending on whichever would be shorter (how many exceptions you'll have), but you'll have to hard-code them somehow.
For instance:
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