in a bool 2d array, does Initialize set everything to false?

[Benny Raymond]

Basically what the subject says...
"in a bool 2d array, does Initialize set everything to false?"

[Matt]

Re: in a bool 2d array, does Initialize set everything to false?


Benny Raymond wrote:[color=blue]
> Basically what the subject says...
> "in a bool 2d array, does Initialize set everything to false?"[/color]

Creating a 2d array:

bool[,] myBools = new bool[5,5];

will initialize the values (all 25 of them) to false.

is that what you are asking?

matt

[Bruce Wood]

Re: in a bool 2d array, does Initialize set everything to false?

Yes, although I prefer not to depend upon that behaviour. A quick trip
through the array to initialize each element to false seems a small
price to pay to make my code easier for others (who may not be as
familiar with the finer points of C#) to read.

[Ignacio Machin \( .NET/ C# MVP \)]

Re: in a bool 2d array, does Initialize set everything to false?

Hi,

bool is a valued type, therefore it will always has a value, if you do not
assign something it will hold a "default" value. For bool is false , so when
you create a new array it will be initialized to false, you have to do
nothing else.
Now for completeness , let say that you want to initialize it to true , in
this case you will have to iterate in the arrays , there is no other way
(AFAIK) of doing it . Of course without using unsafe code.


cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation



"Benny Raymond" <benny@pocketro cks.com> wrote in message
news:%2375BepNB GHA.3064@TK2MSF TNGP10.phx.gbl. ..[color=blue]
> Basically what the subject says...
> "in a bool 2d array, does Initialize set everything to false?"[/color]

[Stoitcho Goutsev \(100\) [C# MVP]]

Re: in a bool 2d array, does Initialize set everything to false?

Benny,

There two types of arrays 2d arrays - multidimensiona l arrays and jagged
arrays jagged. The former are declared as
bool[,] array;
and the latter
bool[][] jaggedArray;

The multidimensiona l array will be initialized with *false*; the jagged
array creation involves more code but at the end of the day will be
initialized with *false* too.


--

Stoitcho Goutsev (100) [C# MVP]

"Benny Raymond" <benny@pocketro cks.com> wrote in message
news:%2375BepNB GHA.3064@TK2MSF TNGP10.phx.gbl. ..[color=blue]
> Basically what the subject says...
> "in a bool 2d array, does Initialize set everything to false?"[/color]

[Jon Skeet [C# MVP]]

Re: in a bool 2d array, does Initialize set everything to false?

Bruce Wood <brucewood@cana da.com> wrote:[color=blue]
> Yes, although I prefer not to depend upon that behaviour. A quick trip
> through the array to initialize each element to false seems a small
> price to pay to make my code easier for others (who may not be as
> familiar with the finer points of C#) to read.[/color]

Personally I'd prefer to rely on the specified behaviour - if I saw a
loop initialising an array, I'd take a few looks at it to check it was
*actually* a redundant bit of code...

While it's reasonable to try to avoid making readers have to know the
finer points of C#, I don't think array initialization is a
particularly advanced topic.

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too