C# Trivia Test - Part 11

re: C# Trivia Test - Part 11

oldnewthing — Wed, 03 May 2006 19:12:39 GMT

7) Politics.

re: C# Trivia Test - Part 11

Damien Guard — Wed, 03 May 2006 19:33:54 GMT

1. Different from what other types?
2. A default constructor. Because structs need to be initialized quickly especially for use in arrays etc.
3. out is a keyword, [out] is an identifier
4. UInt64.
5. IEnumerable to get an IEnumerator. In .NET 2.0 it uses IEnumerable<T> to get an IEnumerator<T>.
7. Garbage collection.
11. To give the debugger something to tie up with source lines where there are no actual executable code.
14. 2000?

[)amien

re: C# Trivia Test - Part 11

Sachin — Wed, 03 May 2006 19:42:40 GMT

12)
Change string to stringbuilder, strings are immutable.

13)
Db (D flat :D)

re: C# Trivia Test - Part 11

Peter Ritchie — Wed, 03 May 2006 20:03:15 GMT

Raymond: or 7) religion ;-)

Decimal: const Decimal is not supported by IL (like other value types) and C# will convert to static readonly Decimal; which also means the compiler will convert its use to a literal and never reference the original static readonly field again. If the const Decimal is a public field of a class in a referenced assembly, any changes to the const Decimal in that referenced assembly will not be used unless the client assembly is recompiled. Other value types do not do this.

re: C# Trivia Test - Part 11

Ricky Dhatt — Wed, 03 May 2006 20:10:48 GMT

7) Finalization
8) Structs
9) Andy the C# Mascot
14) July 11 2000 in Orlando, FL.

re: C# Trivia Test - Part 11

ericgu — Wed, 03 May 2006 20:19:59 GMT

On #1, I meant different from types like int or bool

Eric

re: C# Trivia Test - Part 11

Jeremy D — Wed, 03 May 2006 20:28:53 GMT

7) Properties

re: C# Trivia Test - Part 11

Jeffrey L. Whitledge — Wed, 03 May 2006 21:10:25 GMT

"10) What is my most useless computer-related skill?"

The ability to press SysRq without looking.

re: C# Trivia Test - Part 11

Matt — Wed, 03 May 2006 21:42:07 GMT

6) Syste,.AttributeUsageAttribute
7) deterministinc finalization :)

oh and 1) it's horrifically bloody slow?

technically every integral and floating point number can have the operators +,-,* and / applied to them where the result is automatically the most precise of the two available.

decimal breaks this since it won't play nice with doubles and floats (as they won't for a neat approximate superset)

Technically this doesn't cover char or bool though.

Just found it (Ithink) it's the only value type in the int,char,bool,integrals,floats which has instance constructor(s) such as new Decimal(double)

re: C# Trivia Test - Part 11

JamesCurran — Wed, 03 May 2006 21:44:12 GMT

#12 I have no real idea (Sachin's sound good), but it does remind me of my experience solving problems on a C++ newsgroup.

Every now & then, someone will post a problem, adding that the reason they need help is because, while it will fail when the app is run, when they step through it in a debugger, it works fine. Eventually, I learned to respond "I don't need to see the code -- you are overunning a local array".

re: C# Trivia Test - Part 11

Bas Westerbaan — Wed, 03 May 2006 22:19:42 GMT

1. It's not natively implemented in the JIT. (I guess). You could make your own.

re: C# Trivia Test - Part 11

Bas Westerbaan — Wed, 03 May 2006 22:23:05 GMT

7. Raw computing performance vs. good memory managment

re: C# Trivia Test - Part 11

Eric Wilson — Wed, 03 May 2006 22:23:53 GMT

#7) Ask whether multiple inheritance is a good thing :)

re: C# Trivia Test - Part 11

Richard — Wed, 03 May 2006 23:14:39 GMT

7. Partial template specialisation and template meta programming.

re: C# Trivia Test - Part 11

Miral — Thu, 04 May 2006 02:13:10 GMT

#2 has always annoyed me. What if I *want* my structs to have a default of "1" in a certain field. Arg.

re: C# Trivia Test - Part 11

Miral — Thu, 04 May 2006 02:13:24 GMT

#2 has always annoyed me. What if I *want* my structs to have a default of "1" in a certain field. Arg.

re: C# Trivia Test - Part 11

ben — Thu, 04 May 2006 02:53:29 GMT

1) not a native type
2) parameterless constructors, I dont know why
3) ??
4) System.UInt64
5) IEnumerable & IEnumerator and IEnumerable<T> IEnumerator<T>
6) ??
7) Multiple inheritance
8 - 12) ??
13) Safe-C
14) PDC 98

re: C# Trivia Test - Part 11

TheMuuj — Thu, 04 May 2006 04:51:31 GMT

1) decimal is the only C# native type that is not a primitive type, and as such the compiler handles constants using a readonly field and an attribute with the binary form of the value. Also, operators are provided by overloads (where as VB uses its own implementation of those operators, even in .NET 2 I believe).
2) Default constructors cannot be declared because creating an array of structs would not call this constructor for performance reasons
3) [Out] only applys to P/Invoke, I believe, and is for use with both references AND pointers
4) In .NET 2.0: System.UInt64, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
5) If possible, foreach tries to not use any interface (it uses static duck typing in order to prevent boxing), save for IDisposable. However, it does use the IEnumerable/IEnumerator pattern (and the generic versions in .NET)
6) AssemblyUsageAttribute (which, in a chicken-egg twist, is applied to itself)
7) Pretty much anything, but especially Templates vs. Generics and/or runtime performance
8) ?? When the spec declares bankruptcy?
9) ??
10) ?? typing on an upside-down Dvorak keyboard?
11) To allow breakpoints on lines of code that don't actually do anything (unless you're talking about release mode, in which case I have no idea since alignment is probably not a big issue)
12) I'm always saying "int" to "IntPtr", but that problem will only show up on 64-bit machines (too many people adapt the old VB6 API calls, which is WRONG WRONG WRONG since VB6 was 32-bit).

re: C# Trivia Test - Part 11

Matthew W. Jackson — Thu, 04 May 2006 04:52:31 GMT

Oh, and I believe that #13 is Safe-C, but I also think that Safe-C is now another project unrelated to C#.

re: C# Trivia Test - Part 11

Stu Smith — Thu, 04 May 2006 11:02:44 GMT

12) Change the "long" to "int" (LONG is 4 bytes in Win32)

re: C# Trivia Test - Part 11

dhananjay singh — Fri, 05 May 2006 07:28:13 GMT

2) Default constructor is not legal because in struct you can't do instance field initialization. So runtime need default constructor to initialize all instance fields to their default value.
struct MyStrstrcut
{
int i=10 //illegal
}

7)C++ and C# nearly share all feature then why not just say
How java is sucking on exception ;)

12) Change CALL to CALLVIRT in IL code.

re: C# Trivia Test - Part 11

dhananjay singh — Fri, 05 May 2006 07:30:43 GMT

Ahh I forget this one first one
1)because of its size it requir 2 read instruction for processor ;0)

re: C# Trivia Test - Part 11

dhananjay singh (dhananjay123@hotmail.com) — Fri, 05 May 2006 07:32:04 GMT

1)Decimal require 2 read instruction
2) Default constructor is not legal because in struct you can't do instance field initialization. So runtime need default constructor to initialize all instance fields to their default value.
struct MyStrstrcut
{
int i=10 //illegal
}

7)C++ and C# nearly share all feature then why not just say
How java is sucking on exception ;)

12) Change CALL to CALLVIRT in IL code.

re: C# Trivia Test - Part 11

tp — Fri, 05 May 2006 07:32:25 GMT

C# Trivia Test

Sheva — Sat, 06 May 2006 15:27:41 GMT

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C# Trivia Test

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C# Trivia Test Answers - Part 11

Eric Gunnerson's C# Compendium — Tue, 09 May 2006 02:01:54 GMT

C# Trivia Test - Part 11

(My initial set of responses vanished into the bit bucket due to the...

Eric Gunnerson s C Compendium C Trivia Test Part 11 | Green Tea Fat Burner

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