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digitalmars.D.learn - Extension Method?

reply oldrev <wstring gmail.com> writes:
Hi all:

Recently, I have found a undocumented(?) feture that a individual function with
one parameter of array can be used as a method:

int getLength(int[] arr) { return arr.length; }
int[] foo = [1, 2, 3];
int len = foo.getLength();

Where I can find the information for this?

Thanks a lot!.

regards.
Mar 21 2007
parent reply Frits van Bommel <fvbommel REMwOVExCAPSs.nl> writes:
oldrev wrote:

 Hi all:
 
 Recently, I have found a undocumented(?) feture that a individual function
with one parameter of array can be used as a method:
 
 int getLength(int[] arr) { return arr.length; }
 int[] foo = [1, 2, 3];
 int len = foo.getLength();
 
 Where I can find the information for this?


http://www.digitalmars.com/d/arrays.html (look for "Functions as Array 
Properties", about halfway down the page)
Note that it also works for functions with more than one argument, as 
long as the first one is an array.
Mar 21 2007
parent oldrev <wstring gmail.com> writes:
Frits van Bommel Wrote:


 oldrev wrote:

 Hi all:
 
 Recently, I have found a undocumented(?) feture that a individual function
with one parameter of array can be used as a method:
 
 int getLength(int[] arr) { return arr.length; }
 int[] foo = [1, 2, 3];
 int len = foo.getLength();
 
 Where I can find the information for this?


 
 http://www.digitalmars.com/d/arrays.html (look for "Functions as Array 
 Properties", about halfway down the page)
 Note that it also works for functions with more than one argument, as 
 long as the first one is an array.


Oops, I think I missed it. Thank you.
Mar 21 2007