Arrays

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AA2e72E

How do I initialise an string array of rank 2 whose first dimension is
unknown at the time of initialisation? I know the second dimension is 3.

I have tried several variations in code and I end up with either an array
whose dimensions are fixed or with the error 'Use of unassigned local
variable ..'
Thanks.
 
AA2e72E said:
How do I initialise an string array of rank 2 whose first dimension is
unknown at the time of initialisation? I know the second dimension is 3.

I have tried several variations in code and I end up with either an array
whose dimensions are fixed or with the error 'Use of unassigned local
variable ..'
Click to expand...

You can't do that with an array; all the dimensions need to be known at
the time of initialisation. You can use some other type of container, such
as a List<string[]>. You can then Add a variable number of
single-dimensional string arrays to the List.
 
You could always wait to initialise the array until you know. Or as was said
use the List<string[]> to build it. Then call ToArray() to get as string[][].
Jagged arrays (arrays of arrays like [][]) are normally faster to use as the
pointer control is more optimized.

--
Ciaran O''Donnell
http://wannabedeveloper.spaces.live.com


Alberto Poblacion said:
AA2e72E said:
How do I initialise an string array of rank 2 whose first dimension is
unknown at the time of initialisation? I know the second dimension is 3.

I have tried several variations in code and I end up with either an array
whose dimensions are fixed or with the error 'Use of unassigned local
variable ..'
Click to expand...

You can't do that with an array; all the dimensions need to be known at
the time of initialisation. You can use some other type of container, such
as a List<string[]>. You can then Add a variable number of
single-dimensional string arrays to the List.
Click to expand...
 
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