Hi everybody,
Coming from a Java background, I'm used to having a "long" type and a
"Long" Object around...
I've recently started a simple, small C# project, and I'm looking for a way
to pass a long value to a method, which only accepts an Object. Logically,
I can't pass the long value so I started looking for a Long Object. But I
can't seem to find it!
Is there such a thing as a Long Object in C#, and if not, how do I solve
this problem?
Thanks,
Ikke
6  18043 
Ikke wrote:
Coming from a Java background, I'm used to having a "long" type and a
"Long" Object around...
I've recently started a simple, small C# project, and I'm looking for a way
to pass a long value to a method, which only accepts an Object. Logically,
I can't pass the long value so I started looking for a Long Object. But I
can't seem to find it!
Is there such a thing as a Long Object in C#, and if not, how do I solve
this problem?
1) you can pass a long to something that expects an object
2) long has an alias System.Int64, which is probably the closest
to java.lang.Long you can find, but note that long is an alias
for System.Int64, System.Int64 is not a wrapper around long
Arne
Hello!
You wrote on Sun, 22 Apr 2007 13:55:07 GMT:
IIs there such a thing as a Long Object in C#, and if not, how do I solve
Ithis problem?
System.Int64?
With best regards,
Eugene Mayevski http://www.SecureBlackbox.com - the comprehensive component suite for
network security
Arne Vajhøj <ar**@vajhoej.dkwrote in
news:46***********************@news.sunsite.dk:
<snip>
>Is there such a thing as a Long Object in C#, and if not, how do I
solve this problem?
1) you can pass a long to something that expects an object
2) long has an alias System.Int64, which is probably the closest
to java.lang.Long you can find, but note that long is an alias
for System.Int64, System.Int64 is not a wrapper around long
Arne
I think the first option is the best for this particular case, but it's
nice to know about option 2.
Thanks, Arne & Eugene for both your quick replies!
Ikke
read up on "boxing". Anytime, a value type is passed into something that is
expecting an object the CLR will implicitly convert it to an object. http://en.csharp-online.net/Glossary...ition_-_Boxing
"Ikke" <ik**@hier.bewrote in message
news:Xn************************@195.130.132.70...
Hi everybody,
Coming from a Java background, I'm used to having a "long" type and a
"Long" Object around...
I've recently started a simple, small C# project, and I'm looking for a
way
to pass a long value to a method, which only accepts an Object. Logically,
I can't pass the long value so I started looking for a Long Object. But I
can't seem to find it!
Is there such a thing as a Long Object in C#, and if not, how do I solve
this problem?
Thanks,
Ikke
It should be noted that long in C# is NOT the same, or even close to the
Long object in java.
When something expects an object, you can pass a long to it, and the
value type is boxed, meaning that a reference type object is created and the
value type stored in it. The process of getting the value type back from
the object reference is called unboxing.
This is very, very different from the Long object in Java, which is
actually a typed wrapper which allows pass by reference semantics. If you
are looking for something similar in .NET, you are going to have to code it
yourself.
Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com
"Ikke" <ik**@hier.bewrote in message
news:Xn************************@195.130.132.70...
Arne Vajhøj <ar**@vajhoej.dkwrote in
news:46***********************@news.sunsite.dk:
<snip>
>>Is there such a thing as a Long Object in C#, and if not, how do I
solve this problem?
1) you can pass a long to something that expects an object
2) long has an alias System.Int64, which is probably the closest
to java.lang.Long you can find, but note that long is an alias
for System.Int64, System.Int64 is not a wrapper around long
Arne
I think the first option is the best for this particular case, but it's
nice to know about option 2.
Thanks, Arne & Eugene for both your quick replies!
Ikke
Nicholas Paldino [.NET/C# MVP] wrote:
It should be noted that long in C# is NOT the same, or even close to the
Long object in java.
When something expects an object, you can pass a long to it, and the
value type is boxed, meaning that a reference type object is created and the
value type stored in it. The process of getting the value type back from
the object reference is called unboxing.
This is very, very different from the Long object in Java, which is
actually a typed wrapper which allows pass by reference semantics. If you
are looking for something similar in .NET, you are going to have to code it
yourself.
Calling with a java.lang.Long will pass a reference by value which
refer to an immutable object.
Not much by reference semantics in that.
Arne This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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