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# Texas holdem hand evaluator

This site lists a bunch of Poker Hand Evaluator libraries and gives a few details about each of them. Most of them are for 5 card hands, but there is at least one for a 7 card hand called The Snezee7 V-LEAGUE.PRO the site give a great overview of the different techniques and algorithms used to analyze poker hands quickly. This week's review challenge is a poker hand evaluator. I started by enumerating the possible hands: public enum PokerHands { Pair, TwoPair, ThreeOfKind, Straight, Flush. Cactus Kev's Poker Hand Evaluator A while ago, I decided to take a shot at writing a poker hand evaluator in the programming language "C". There are already numerous evaluators out there, but I had an idea for an algorithm that might be faster than anything already out there.

## Texas Hold'em Poker Odds Calculator

And also is good to compare with other hands, because you have the ranking value not the name of it. Another issue was fixed related to stack overflow when the equal operator was used on a Hand instance. Thanks i want to see how the methods works to make some new methods and to parctice my programming skill. If the algorithm works, please leave a comment. I would use auto-property with private setter like you did in PlayingCard here. You have a pair in your hand and a pair on the board, your best hand is 2 pair and a shot at FH.

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## Fast, Texas Holdem Hand Evaluation and Analysis

Recently, I was laid up with a prolonged illness. During that time, I needed to entertain myself. I quickly determined that daytime TV was not worth watching. Instead, I started playing Texas Holdem online. A few thousand hands later, I determined that the medication I was taking was interfering with my ability to concentrate. This limited the skill level that I could consistently play at. So instead of continuing to play Texas Holdem poorly, I decided to write a software to analyze poker.

The first thing I realized I needed was a fast way to iterate through and evaluate Texas Holdem hands. After searching the net and trying several libraries, I found that nothing met my needs.

Native C code was too slow, and the best C library poker-eval was very difficult to connect to C using interop. So I started writing my own C library. After a few days of work, I was able to evaluate a few hundred thousand hands a second.

This was several orders of magnitude slower than I needed. So I looked at poker-eval again. After working through this gnarly, heavily macroed and table driven C library, I realized that the techniques they were using should work with C. I ported the portion of the tables and evaluation functions that I needed to analyze Texas Holdem. The resulting code is definitely fast enough for most of my needs.

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This week's review challenge is a poker hand evaluator. I started by enumerating the possible hands:. At this point I had everything I need to write my actual Poker hand evaluator - because the last time I implemented this like, 10 years ago it was in VB6 and that I'm now spoiled with.

This type should be called in singular PokerHand. When you have a variable of this type, it represents a single hand, not some collection of hands. Your other enum s are named correctly in this regard. You should be consistent. Either start both types with PlayingCard or both with Card. I prefer the former, because this is a playing card library, there is not much chance of confusion with credit cards or other kinds of cards.

I would use auto-property with private setter like you did in PlayingCard here. It won't enforce the readonly constraint, but I think shorter code is worth that here. Also, this pretty dangerous code, any user of this class can modify the dictionary. I question whether IDictionary is actually the right type here. I believe that the common operation would be to find the hand for a collection of cards, not finding out whether a given hand matches the cards.

I agree that the lambdas are overly verbose, but I'm not sure it actually helps readability. What I don't like the most is all of the GroupBy repetition. What you could do is to create an intermediate data structure that would contain the groups by NominalValue and anything else you need and then use that in your lambdas. What is the cards. Count supposed to mean? Don't there always have to be 5 cards? The second part of this lambda seems to indicate that.

## Texas holdem 4 of a kind odds

Texas hold 'em also known as Texas holdem , hold 'em , and holdem is a variation of the card game of poker. Two cards, known as the hole cards, are dealt face down to each player, and then five community cards are dealt face up in three stages. The stages consist of a series of three cards "the flop" , later an additional single card "the turn" or "fourth street" , and a final card "the river" or "fifth street".

Each player seeks the best five card poker hand from any combination of the seven cards of the five community cards and their own two hole cards. If a player's best five-card poker hand consists only of the five community cards and none of the player's hole cards, it is called "playing the board". If you play the board on the river, then you can do no better than tie the other player s in the game if no player can make a better hand than the board represents, using either or both hole cards.

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