C# Discussion Boards - CodeProject

moon_stick5-Jan-09 3:36

5-Jan-09 3:36

Did you not even look at the link I sent you?!

It definitely isn't definatley

George_George5-Jan-09 3:40

5-Jan-09 3:40

I read it and it mentions all string operations are thread safe. It makes me surprised, just double check with you. Smile | :)

regards,
George

moon_stick5-Jan-09 4:10

5-Jan-09 4:10

I'm sure I should be flattered but given that Microsoft wrote the class, I'd probably believe their documentation over anything I have to say.

It definitely isn't definatley

George_George5-Jan-09 22:42

5-Jan-09 22:42

Thanks moon_stick,

I agree with the conclusion. My question is about why. Smile | :)

I think the reason why all methods of string class are thread safe is because string is immutable, i.e. when the string is modified, a new instance is created. Agree or?

regards,
George

moon_stick6-Jan-09 0:34

6-Jan-09 0:34

Immutable objects are inherently thread safe but it's quite possible for an object to be thread safe without being immutable.

I'm done answering questions on this topic now - go and search on google (thread safety) or MSDN if you want more detail.

It definitely isn't definatley

George_George6-Jan-09 0:40

6-Jan-09 0:40

Thanks moon_stick,

I appreciate your help. Smile | :)

My question is for the root cause why string is thread safe, is it because string is immutable (i.e. every update operation on string will create a new instance.)?

(MSDN does not answer this.)

regards,
George

moon_stick6-Jan-09 0:45

6-Jan-09 0:45

As I stated in my last answer, strings are thread safe because strings are immutable and immutable objects are thread safe.

I can't see a valid reason why you'd actually need to know this information anyway (and quite franky, don't care so don't bother telling me).

Now leave me alone before I lose my temper.

It definitely isn't definatley

George_George10-Jan-09 2:42

10-Jan-09 2:42

Thanks moon_stick,

Sorry for any inconvenience. I like to study internals and find why besides just the rules. Smile | :)

It is good that we find the root reason why string class is thread safe because it is immutable.

regards and have a good weekend,
George

J4amieC5-Jan-09 4:19

J4amieC

5-Jan-09 4:19

Im surprised that after being told coutless times to read the docs before asking a question you still don't bother. However this does not change the reality that you still don't.

Do you see how this applies to the current situation?

George_George5-Jan-09 22:43

5-Jan-09 22:43

Thanks J4amieC,

I agree with the conclusion. My question is about why.

I think the reason why all methods of string class are thread safe is because string is immutable, i.e. when the string is modified, a new instance is created. Agree or?

regards,
George

led mike5-Jan-09 5:10

led mike

5-Jan-09 5:10

moon_stick wrote:
Did you not even look at the link I sent you?!

Are you not familiar with George? Yes, he is an odd one, although not sure "odd" does him justice. I believe he has some crazy job that pays him by the number of internet forum posts he makes.

moon_stick wrote:
I'm sure I should be flattered but given that Microsoft wrote the class, I'd probably believe their documentation over anything I have to say.

Do not expect George to understand even the simplest things from any documentation. Oh and, good luck.

led mike

moon_stick5-Jan-09 5:27

5-Jan-09 5:27

led mike wrote:
Are you not familiar with George?

That was my first encounter - I think I get the idea already...!! Laugh | :laugh:

It definitely isn't definatley

George_George5-Jan-09 22:45

5-Jan-09 22:45

I am asking why but you are talking about conclusion. Here is why we have mis-understanding. Smile | :)

You can read here.

http://www.codeproject.com/script/Forums/View.aspx?fid=1649&msg=2867111[^]

regards,
George

George_George5-Jan-09 22:44

5-Jan-09 22:44

Any comments to,

http://www.codeproject.com/script/Forums/View.aspx?fid=1649&msg=2867111[^]

Smile | :)

regards,
George

Abhijit Jana5-Jan-09 2:40

Abhijit Jana

5-Jan-09 2:40

Check Thread Safe Section[^]

cheers,
Abhijit

George_George5-Jan-09 3:30

5-Jan-09 3:30

Thanks Abhijit,

It talks about the general thread safety rule, not about my specific question about thread safety for string. Smile | :)

Any new ideas or comments?

regards,
George

Abhijit Jana5-Jan-09 4:08

Abhijit Jana

5-Jan-09 4:08

George_George wrote:
It talks about the general thread safety rule

Yes, That true. but it could also clear your doubts . Any way hope now your have got your answer.

cheers,
Abhijit

George_George5-Jan-09 22:41

5-Jan-09 22:41

Thanks Abhijit,

I think all string operations are thread-safe. Since when we modify a string, a new string instance will be created. Do you think it is correct? Smile | :)

regards,
George