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I am trying to go through a list of words and for each one determine if it is a valid English word (for Scrabble). I'm not sure how to approach this, do I have to go find a text file of all English words and then use file reading and parsing methods to manually build a data structure like a trie or hashmap - or can I find those premade somewhere? What is the simplest way to go about this?
You can use NetSpell library for checking this. It can be installed through Nuget Console easily with the following command
PM> Install-Package NetSpell
Then, loop through the words and check them using the library
NetSpell.SpellChecker.Dictionary.WordDictionary oDict = new NetSpell.SpellChecker.Dictionary.WordDictionary();
oDict.DictionaryFile = "en-US.dic";
oDict.Initialize();
string wordToCheck = "door";
NetSpell.SpellChecker.Spelling oSpell = new NetSpell.SpellChecker.Spelling();
oSpell.Dictionary = oDict;
if(!oSpell.TestWord(wordToCheck))
{
//Word does not exist in dictionary
...
}
Since you're looking specifically for valid Scrabble words, there are a few APIs that validate words for Scrabble. If you use anything that's not for that intended purpose then it's likely going to leave out some words that are valid.
Here's one, here's another, and here's a separate question that lists available APIs.
So that I can add some value beyond just pasting links, I'd recommend wrapping this in your own interface so that you can swap these out in case one or another is unavailable (since they're all free services.)
public interface IScrabbleWordValidator
{
bool IsValidScrabbleWord(string word);
}
Make sure your code only depends on that interface, and then write implementations of it that call whatever APIs you use.
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I've got this task that requires me to generate some basic C code using a software written in C#.
The generated code should be based on some input files I provide to my software, we'll call it btOS for easy of communication.
So when starting btOS I give it as input file1, config.xml. When I hit run it should output a file.c that contains some basic structures and/or methods based on what the input files contain.
Is there any elegant way to do this ? Maybe some already generated templates or methods or stuff like that ? The only way I could think of handling this was creating specific strings in C# and outputting them to a C file.
L.E.: It seems that somehow my question was not clear enough. I assume the fault of including C++ in the title, I have remove it but I don't see how that is relevant because the question was very simple.
Anyway, to make it more clear. All i need to do is read some config files (their content is irrelevant, all they contain are some variables that will be used to generate some function templates, which will mostly impact the name of the function) - and write an output file with the extension .C (as in Main.c) that will contain those templates I generated.
So, again, the question: Are there any "elegant" and maybe somehow "professional" ways to do this other than using custom generated strings within the code that I will write to the file ? Right now the only way I see fit to do this without too much hassle is using some template text files with a naming convention defined by me(e.g. function_variableName{...}) where I just change the [variableName] text with whatever I need to to be there and "Abracadabra" I have a function that I will write to the file.
Now as Soonts suggested please try and be helpful, read multiple times if you don't clearly understand or maybe even don't bother - let somebody who is interested in this topic, tries to help or gain some new knowledge before flagging it.
Double Cheers.
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I plan to write a program or rather function which will be able to analyze a string parameter which in turn will be math expression. Only the 4 basic operations are allowed(addition, subtraction, multiplication and division) and the numbers are all whole numbers from -100 to 100. The result is allowed to be float. I know the registries work in the same way I.e calculate result of two numbers and store it, than calculate result of stored value and the next operant and store. And so forth until there are no operands left. The number of operands will usually be 2 but I will have a need of 3 or even more so yes, more operands is a requirement.
I was wondering how would you structure this in C#? What tools helper functions you would use in this scenario?
Note: I am working on Unity 5.1.4 project and I want to use a math parser in it. Unity is .NET 2.0
Note: This seems most promising: http://mono.1490590.n4.nabble.com/Javascript-eval-function-in-c-td1490783.html
It uses a variant of eval() function.
In .NET there are no some high level helper functions to help you with this. You would have to parse and tokenize the string in your code. There are however third party libraries that do what you need, for instance Expression Compiler, Simple Math Parser, Mathos Parser, and many other. Search for math expression parser.
If you want to make one from scratch you could look the code of existing ones.
Hans Passant mentions a simple solution, maybe just what you need. You get the result of the expression, so if you need just that, and not the actual expression tokens, then .NET got you covered.
This tool finished the job with no adding external references, dlls or what not: http://mono.1490590.n4.nabble.com/Javascript-eval-function-in-c-td1490783.html
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I have a class ProductKeyLib that is part of project MyProgram-Web, which itself is a part of solution MyProgram. As of now, this lib only checks whether the key is valid, but does not generate one.
The interface for key generation will be in project MyProgram-KeyGen, which also is part of solution MyProgram.
Now, the tricky part:
I would like to have both functions (generation and check) in one class, because, as you may guess, 100% compatibility between key generation and key check is better achieved when everything is in one file, and also my unit tests will be easier then.
But: both programs should include that part in their program, I don't want to have a special dll. Furthermore, MyProgram-Web should only include the checking part, not the key generation.
Can I do that in VisualStudio? If so, how?
Well, it's probably not a good idea, but you can use a combination of compiler defines and linked source files.
So you'd have a single cs file containing all the code linked to both projects (no common library - just the single code file). In it, you'd have all your code:
#if KeyGen
public string GenerateKey(...)
{
...
}
#endif
public bool CheckKey(...)
{
...
}
Then, in your keygen project, you'd put a compiler define named KeyGen, and the generation code will only be compiled in the keygen part, and not the client application.
However, this still reeks of "security by obscurity". If the key generation and checking is actually important, this would be insufficient. For example, just through knowing how the key is checked, you can in many cases easily find ways to construct the keys (and even brute-force algorithms are very reliable nowadays, even without utilizing the GPU).
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I need to learn a certain programming subject and I don't know where to start, would like your help.
This is what I need do do, I have a user form (UI) and the user enter "Rules" in the form of:
if operator(obj1) then assign(obj1,string)...
I take this rules, and translate them into actual code, and I want to put that code somewhere in a function/my code.
for example:
main {
UI...
/* when we reach here, means the user done writing rules */
/*Function that translate the user rules to actual code */
translate();
for {
/* This is where I want to put the code after translation */
}
}
How do I put the code inside the loop (or anywhere else for that matters) after the program started running?
I ofcourse don't look for an actual answer, more to give you an idea what I need so you can refer me to a certain subject to study about.
I presume, you are in process of creating a custom rule engine, which has the capability of validating your rules on fly. Within my ability, you need to start reading c# scripting, code generation, dynamic loading or reflection etc are some to start with.
To give a kick start, following are some of the step which I can think off;
Grab the rule definition (xml or csv)
Write a small helper which will read rule entries from the definition and convert it into
c# source code. This is similar to c# scripting.
On successful completion of (2), create a dll out of the source code
Now reflect/dynamically load the dll from (3) to where ever you wanted to validate the rule.
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which is the best memory efficient/efficient way to declare string and other data type variables in c#!?
Option 1
string strAssociateId = context.Request.QueryString["xxxxxx"],
strAssociateName = context.Request.QueryString["xxxxx"],
strPhoto = context.Request.QueryString["xxxxx"],
strDescription = context.Request.QueryString["xxxxx"];
or
Option 2
string strAssociateId = context.Request.QueryString["xxxxx"];
string strAssociateName = context.Request.QueryString["xxxxx"];
string strPhoto = context.Request.QueryString["xxxxx"];
string strDescription = context.Request.QueryString["xxxxx"];
or
any other way!?
which is the best way to follow on a longer run?!
or both have the same efficiency!?
downvoters pls comment so that i can correct.
I am just trying to find the best way and this question is not there in stackoverflow before!!
this will not lead to any discussion, and the question is completely answerable and clear
The only difference between those options, is readability. There are no performance difference, and they will generate the exact same IL.
For readability, I would choose option 2.
They will be compiled to the same IL, your Option 1 is simply syntactic sugar.
I my opinion Option 2 is better because it has better readability.
which is the best way to follow on a longer run
Both are best as both will generate the same IL.
or both have the same efficiency
Yes as both have same efficiency.
Which one to follow
You need to follow the one that is followed through out your application to support consistency. However if you are starting a new project you can decide not which one you like the most. My preference is the second one as it is more common as well as more readable
Both are better. But you are gonna mess up with the code. If you prefer using second method you might require or consider using comments
// this code is this..
So that you can know what variable or string was written here. Either you might think that this is a parameter to something.
The first method is more lovey to everybody. However I don't use strings. I use simple vars.
To follow a long run, you can use any of them. They don't have any time consuming effect.
To check more about these You can use IE F12 Developer Tools. To Test which page is using more time to get loaded.