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Naggy : Live compiler diagnostics in AVR Studio!

If you’ve programmed in any managed language in Visual Studio, you’d have definitely seen those nagging red squiggles that appear as you type, telling you just how dumb you are, every time you pause typing. Might not be everyone’s cup of tea, but I’ve personally found them very...

Posted to the blog => anything goes by Senthil on Sun, Apr 17 2011
Filed under: Filed under: software, C# 3.0, AVR Studio
When a C++ destructor did not run – Part 1

Consider this piece of C++ code. 1: using namespace std; 2: 3: class C 4: { 5: public : 6: C() 7: { 8: cout << "Constructed" ; 9: } 10: ~C() 11: { 12: cout << "Destructed" ; 13: } 14: }; 15: 16: void SomeFunc() 17: { 18: C c; 19: throw std::exception( "Gone"...

Posted to the blog => anything goes by Senthil on Fri, Dec 4 2009
Filed under: Filed under: software, C# 3.0, Debugging, CodeProject, Windbg, C++
Wrong compiler warning? Or Not?

This piece of code results in a warning. 1: class Test 2: { 3: public static void Main() 4: { 5: object obj = "Senthil" ; 6: string myName = "Senthil" ; 7: Console.WriteLine(obj == myName); 8: } 9: } The compiler says “warning CS0252: Possible unintended reference comparison; to get...

Posted to the blog => anything goes by Senthil on Mon, Nov 30 2009
Filed under: Filed under: software, C# 3.0, C#
When what you set is not what you get : SetEnvironmentVariable and getenv

Mixing SetEnvironmentVariable and getenv is asking for trouble, as we recently found to our dismay (and exasperation!). It took some serious debugging to figure out the actual problem – let’s see if you can figure it out. Here’s some C++/CLI code that uses getenv to read the value of an environment variable...

Posted to the blog => anything goes by Senthil on Tue, Oct 13 2009
Filed under: Filed under: software, C# 3.0, Debugging, CodeProject, Windbg
Anonymous methods as event handlers – Part 2

The previous post discussed having anonymous methods as event handlers and ended with a question – why doesn’t unsubscription work while subscription works out alright? Vivek got the answer spot on – the way the C# compiler handles and translates anonymous methods is the reason. Here’s the code involved...

Posted to the blog => anything goes by Senthil on Wed, Sep 9 2009
Filed under: Filed under: software, C# 3.0, C#, CodeProject
Anonymous methods as event handlers – Part 1

The syntactic sugar offered by anonymous methods makes them great candidates for writing event handlers; together with smart type inference, they reduce the amount of code written by an order of magnitude. And that’s without considering the power offered by closures. With event handlers, closures allow...

Posted to the blog => anything goes by Senthil on Tue, Sep 1 2009
Filed under: Filed under: software, C# 3.0, C#, CodeProject
Remoting IEnumerables

You're writing this really cool and innovative class to calculate the first hundred thousand natural numbers. You think about the API, and you realize that returning an array of the numbers a) might take a long time to complete, and b) is going to cause memory usage to spike up like mad. So you decide...

Posted to the blog => anything goes by Senthil on Sat, Aug 29 2009
Filed under: Filed under: software, C# 3.0, C#
Overload resolution and null

My colleague Soundar discovered this rather interesting behavior. 1: class Test 2: { 3: public static void Main() 4: { 5: Test test = null ; 6: 7: Console.WriteLine(" {0} ", test); 8: Console.WriteLine(" {0} ", null ); 9: } 10: } If you run this code, you’ll find that while line 7...

Posted to the blog => anything goes by Senthil on Wed, Jul 8 2009
Filed under: Filed under: software, C# 3.0, C#
Mutating value types – Part 1

Take a look at the following short snippet of code. 1: using System; 2: 3: struct S 4: { 5: public int X; 6: } 7: 8: class C 9: { 10: /* More code here */ 11: } 12: 13: class Test 14: { 15: public static void Main() 16: { 17: C c = new C(); 18: c.S.X = 1; 19: } 20: } Without knowing the type definition...

Posted to the blog => anything goes by Senthil on Thu, May 21 2009
Filed under: Filed under: software, C# 3.0, C#
Yowza! My computer is seeing patterns!

Ever since I happened to stumble upon this book on Data Mining, I've been hooked. So much so that I've been brushing up on statistics and probability distributions just to follow along the book. I'm currently reading the chapter on classification using decision trees , and what appeals to...

Posted to the blog => anything goes by Senthil on Thu, Apr 9 2009
Filed under: Filed under: software tools, software, C# 3.0, Data Mining
Itertools for C# - Tee

Tee is a cool function that "clones" enumerators whatever their current state is - it basically allows you to branch off an enumerator into as many enumerators as you want, all independent of each other. You can do something like List<int> list = new List<int> { 1, 2, 3, 4, 5 };...

Posted to the blog => anything goes by Senthil on Mon, May 5 2008
Filed under: Filed under: software, software C# language, C# 3.0
Type inference != Dynamic typing

Local variable type inferencing is a new feature in C# 3.5 - a very "handy" one, in that it saves a lot of typing. Basically, it lets you do var dict = new Dictionary<string, List<int, Dictionary<int, string>>>(); instead of Dictionary<string, List<int, Dictionary<int...

Posted to the blog => anything goes by Senthil on Mon, Nov 19 2007
Filed under: Filed under: software, software C# language, C# 3.0

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