C# teasers

[Ludwig]

Hi,
I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?
Thanks!

[Jon Skeet [C# MVP]]

On Nov 27, 1:14 pm, Ludwig <[e-mail]:

I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?

Are you after "this doesn't do what you think it does" type things (eg
overloading special cases, or captured variables) or "you should be
able to get this really" questions?

Jon

[Michael Nemtsev [MVP]]

Hello Ludwig,

Use the MS certification preparation matherials for this.
They are a good source for such kind of teasers

---
WBR,
Michael Nemtsev [.NET/C# MVP] :: blog: http://spaces.live.com/laflour

"The greatest danger for most of us is not that our aim is too high and we
miss it, but that it is too low and we reach it" (c) Michelangelo
LHi,
LI'm looking for C# brain teasers (or VB.NET): a little piece of code
Lthat does something special, or where a little error is. Does anyone
Lhas some of these, or links to sites?
LThanks!

[Ludwig]

On 27 nov, 15:01, "Jon Skeet [C# MVP]" <[e-mail]:

On Nov 27, 1:14 pm, Ludwig <[e-mail]:

I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?

Are you after "this doesn't do what you think it does" type things (eg
overloading special cases, or captured variables) or "you should be
able to get this really" questions?

Jon

Both :)

[Jon Skeet [C# MVP]]

On Nov 27, 2:33 pm, Ludwig <[e-mail]:

<snip>

Both :)

Okay. I've a few ideas - I'll post some tonight.

Jon

[Ludwig]

On 27 nov, 15:41, "Jon Skeet [C# MVP]" <[e-mail]:

On Nov 27, 2:33 pm, Ludwig <[e-mail]:

<snip>

Both :)

Okay. I've a few ideas - I'll post some tonight.

Jon

Thank you! Meanwhile I'm looking into the certification books - I've
to take the exams anyway, so it's a good waste of time ;)

[=?Utf-8?B?b2xkbWFuNjk=?=]

"Ludwig" wrote:

Hi,
I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?
Thanks!

[=?Utf-8?B?b2xkbWFuNjk=?=]

I have a program that finds prime numbers, if you are interested.

"Ludwig" wrote:

Hi,
I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?
Thanks!

[Chris Mullins [MVP - C#]]

There's one here that threw me for a loop late one night:

http://groups.google.com/group/micro...4fc9ba3b43ae3b

Other fun ones include some of Joe Duffy's (and Jon Skeet's) examples of
broken double-check locks.

--
Chris Mullins

"Ludwig" <ls*******@gmail.comwrote in message
news:11**********************************@s12g2000 prg.googlegroups.com...

Hi,
I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?
Thanks!

[Hilton]

x = x & (x-1)
"Ludwig" <ls*******@gmail.comwrote in message
news:11**********************************@s12g2000 prg.googlegroups.com...

Hi,
I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?
Thanks!

[Alun Harford]

Ludwig wrote:

Hi,
I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?

Special? How about this:

Why does this compile:

public class Program{
public static void Main(string[] args){
TypedReference typedReference = new TypedReference();
}
}

and this not compile:

public class Program{
public static void Main(string[] args){
object typedReference = new TypedReference();
}
}

Alun Harford

[Jon Skeet [C# MVP]]

Ludwig <ls*******@gmail.comwrote:

<snip>

Thank you! Meanwhile I'm looking into the certification books - I've
to take the exams anyway, so it's a good waste of time ;)

Here are some to be going on with. I'll add to the list as I remember
them...

http://pobox.com/~skeet/csharp/teasers.html

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
World class .NET training in the UK: http://iterativetraining.co.uk

[Brian Gideon]

On Nov 27, 2:46 pm, Jon Skeet [C# MVP] <[e-mail]:

Here are some to be going on with. I'll add to the list as I remember
them...

http://pobox.com/~skeet/csharp/teasers.html

--

I love #2. I've seen your blog about beforefieldinit before. It
would be plain wrong to ask somebody that question in an interview :)

By the way, you should keep adding to that page periodically or as you
run across a good one.

[Brian Gideon]

On Nov 27, 7:14 am, Ludwig <[e-mail]:

Hi,
I'm looking for C# brain teasers (or VB.NET): a little piece of code
that does something special, or where a little error is. Does anyone
has some of these, or links to sites?
Thanks!

This one piqued my interest some time back.

http://groups.google.com/group/micro...0965d37f201ddb

[Jon Skeet [C# MVP]]

Brian Gideon <br*********@yahoo.comwrote:

I love #2. I've seen your blog about beforefieldinit before. It
would be plain wrong to ask somebody that question in an interview :)

Indeed. Unless they were claiming to know absolutely everything about
C#, in which case anything is fair game.

By the way, you should keep adding to that page periodically or as you
run across a good one.

Absolutely - I've been meaning to do something like it for a while.
This thread was a catalyst :)

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
World class .NET training in the UK: http://iterativetraining.co.uk

[Ludwig]

On 27 nov, 21:46, Jon Skeet [C# MVP] <[e-mail]:

Ludwig <[e-mail]:

<snip>

Thank you! Meanwhile I'm looking into the certification books - I've
to take the exams anyway, so it's a good waste of time ;)

Here are some to be going on with. I'll add to the list as I remember
them...

http://pobox.com/~skeet/csharp/teasers.html

--
Jon Skeet - <[e-mail]>http://www.pobox.com/~skeet Blog:http://www.msmvps.com/jon.skeet
World class .NET training in the UK:http://iterativetraining.co.uk

Perfect, I've bookmarked your site and will have a look!! Thanks!

[Ludwig]

On 27 nov, 22:27, Jon Skeet [C# MVP] <[e-mail]:

Brian Gideon <[e-mail]:

I love #2. I've seen your blog about beforefieldinit before. It
would be plain wrong to ask somebody that question in an interview :)

Indeed. Unless they were claiming to know absolutely everything about
C#, in which case anything is fair game.

By the way, you should keep adding to that page periodically or as you
run across a good one.

Absolutely - I've been meaning to do something like it for a while.
This thread was a catalyst :)

--
Jon Skeet - <[e-mail]>http://www.pobox.com/~skeet Blog:http://www.msmvps.com/jon.skeet
World class .NET training in the UK:http://iterativetraining.co.uk

Here's another nice one:

Console.WriteLine(1 + 2 + "3");
Console.WriteLine("1" + 2 + 3);