Probably, though I think arduino or beagleboard are more commonly the sorts of bases used for sensor-laden systems.
This library is fun https://github.com/gelstudios/gitfiti
I never finished the first course
pretty sadYesterday I wrote a C# solution to the N-Queens puzzle after learning about it here. It took me several hours (I didn't look at the solution, but coffeescript is confusing anyway). I did it almost entirely with LINQ because functional programming yay.
Here's my solution, with an included print method. It solves n=8 in milliseconds, and n=13 in ~1.6 seconds. The code could be shorter, but I tried to break up stuff into functions for readability. It was a lot of fun to write.
I never finished the first course
Yeah, I got some UE3 experience so Unity should be a cakewalk
They did, it's called C#
They did, it's called C#
Scala though.They did, it's called C#
Learning a new language, understanding the assignments (I was/still am kinda new to functional programing), and applying it to the assignments was quite challenging, but it was nice.I never finished the first course
$ make ex1
cc ex1.c -o ex1I know. I was shocked that Sketchers (the weird shoe company) used Scala and was looking for programers.
{
Dictionary<string, Func<object[], object>> delegatetofuncs = new Dictionary<string, Func<object[], object>>();
FooService svc = new FooService();
Type type = svc.GetType();
foreach(MethodInfo method in type.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly))
{
delegatetofuncs.Add(method.Name, (Func<object[], object>)Delegate.CreateDelegate(typeof(Func<object[], object>), svc, method));
}
Stopwatch sw = Stopwatch.StartNew();
for (int i = 0; i < 500000; i++)
{
object result = delegatetofuncs["GetFoos"](new object[] { id, name });
}
sw.Stop();
Console.WriteLine("delegatetofuncs took " + sw.Elapsed);
}
public class FooService
{
public Foo GetFoo(object[] param)
{
if (param.Length == 2)
{
int id = (int)param[0];
string name = (string)param[1];
}
return new Foo();
}
}I have some questions.
I could create a unique string based upon the name and parameters to serve as the dictionary key. Use case for now is no overloads though.
In the case of a nonexistent method, null should be returned.
I'm not completely clear on what you're saying. I don't know what you mean by "create, compile and cache" (do you mean generate IL at runtime?) and I don't understand what your API is going to be. Are you returning the method, or invoking it? I guess it's not relevant for your problem.
Yes, I'd like to automatically generate the code needed to parse incoming objects to invoke a delegate. I could do it as is, and just force every method to have a singular object[] as a parameter and handle the parsing in the methods themselves, but it seems like a lot of redundant code to me.
That's sort of what I figured. I guess it would be even better to do it at compile time, but at runtime and then caching as a delegate would be just as good/fast I've read.
Yeah, you can compile it at runtime as well. But I've read that there is no support for multiline statements, which would be something I would need I think.
...
var objA = MyGetMethod(SomeEnumType.EnumValue1);
...
var objB = MyGetMethod(10);
...public SomeObjectType MyGetMethod<T>(T value)
where T: struct
{
if (value is SomeEnumType)
{
[B]switch(value as SomeEnumType)[/B]
{
case SomeEnumType.EnumValue1:
...
}
}
...
}public SomeObjectType MyGetMethod<T>(T value)
where T: struct
{
if (value is SomeEnumType)
{
[B]switch(value as SomeEnumType[U]?[/U])[/B]
{
case SomeEnumType.EnumValue1:
...
}
}
...
}The question mark is syntactic sugar for Nullable<yourtype>. I think the "as" casting expects a nullable type. If you already check your type with "is", maybe you could just directly cast it, instead of avoiding cast exceptions with "as".
Thanks, I think I found something that is a bit more tailored for me and just ordered this. Maybe someday I'll have conversations with you guys.
The `as` operator is just convenience syntax for a cast that returns null if it fails, rather than throwing an exception. Since the return can be null, it only works with nullable types. Structs aren't nullable, so you can't use `as` unless you wrap it in a Nullable<T>. The `?` operator is syntax for wrapping a T into a Nullable<T>. I wouldn't recommend doing it this way though, as you're needlessly introducing the possibility of null (we already know the type due to `is`, so the result will never be null, so there's no reason to use `as`.
if(value is SomeEnumType)
{
switch((SomeEnumType)(object)value)
{
//etc
}
}
Well it was C, but ultimately I wanted to learn an objective language. This book starts with assuming you don't know any language, including C and the best part is that it's been revised to Xcode 5. I've been able to follow along so far without any issue and it even taught me the Terminal way of doing it if I really wanted, which I don't.
Going back to University for Discrete Math, Computer Graphics and Databases Management Systems.
All I want to do is learn how to code.