All Values Same (for property) in a Collection

[sloan]

What is the most concise way to ...... bail out of a loop (or return false)
if one value isn't the same as all the others in a collection?


For example:


I have an EmpCollection, which is a collection of Employee objects.
Employee object has a .DeptID property (int)

Let's say I want to verify all DeptID 's are the same for a collection of (N
number) of employees.


public bool AllDeptIDsMatch ( EmpCollection ec )
{
bool returnValue = false; // or true

for each (Employee e in ec)
{

Console.WriteLine ( e.DeptID ) ;
//???/

}



return returnValue;

}


For clarity,

e1.DeptID = 101;
e2.DeptID = 101;
e3.DeptID = 101;
the above would return true
...........
e1.DeptID = 101;
e2.DeptID = 101;
e3.DeptID = 101;
e4.DeptID = 202;
e5.DeptID = 101;
e6.DeptID = 101;
the above would return false.




I've written some code , but seems too verbose.

This is still for 1.1 fyi.

 

[Nicholas Paldino [.NET/C# MVP]]

sloan,

Just return, or if you want to go to the code after the loop, use break:

public bool AllDeptIDsMatch(EmpCollection ec)
{
// This assumes you have a count property. If there are
// no items, or one item, they are all the same.
if (ec.Count <= 1)
{
// They are all the same.
return true;
}

// Get the first value.
int id = ec[0].DeptID;

// Cycle through all the employees. If the department id
// is different for any of them, return false.
foreach (Employee e in ec)
{
if (e.DeptID != id)
{
// They are not all the same.
return false;
}
}

// They are the same.
return true;
}

Hope this helps.

 

[sloan]

Thanks Nicholas ....

I was missing the ec.Count thing.

It's been a long 2 months at work. I need a vacation.

...

Sloan

sloan,

Just return, or if you want to go to the code after the loop, use break:

public bool AllDeptIDsMatch(EmpCollection ec)
{
// This assumes you have a count property. If there are
// no items, or one item, they are all the same.
if (ec.Count <= 1)
{
// They are all the same.
return true;
}

// Get the first value.
int id = ec[0].DeptID;

// Cycle through all the employees. If the department id
// is different for any of them, return false.
foreach (Employee e in ec)
{
if (e.DeptID != id)
{
// They are not all the same.
return false;
}
}

// They are the same.
return true;
}

Hope this helps.


--
- Nicholas Paldino [.NET/C# MVP]
- (e-mail address removed)

What is the most concise way to ...... bail out of a loop (or return
false)
if one value isn't the same as all the others in a collection?


For example:


I have an EmpCollection, which is a collection of Employee objects.
Employee object has a .DeptID property (int)

Let's say I want to verify all DeptID 's are the same for a collection of
(N
number) of employees.


public bool AllDeptIDsMatch ( EmpCollection ec )
{
bool returnValue = false; // or true

for each (Employee e in ec)
{

Console.WriteLine ( e.DeptID ) ;
//???/

}



return returnValue;

}


For clarity,

e1.DeptID = 101;
e2.DeptID = 101;
e3.DeptID = 101;
the above would return true
..........
e1.DeptID = 101;
e2.DeptID = 101;
e3.DeptID = 101;
e4.DeptID = 202;
e5.DeptID = 101;
e6.DeptID = 101;
the above would return false.




I've written some code , but seems too verbose.

This is still for 1.1 fyi.