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Create array of a custom type

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  Create array of a custom type Archos <raul.san@sent.com> - 2012-01-22 03:55 -0800
    Re: Create array of a custom type Denis McMahon <denismfmcmahon@gmail.com> - 2012-01-22 12:55 +0000
      Re: Create array of a custom type Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2012-01-22 14:14 +0100
    Re: Create array of a custom type Martin Honnen <mahotrash@yahoo.de> - 2012-01-22 13:57 +0100

#10466 — Create array of a custom type

I've created a custom type named person:

    function person(name, age) {this.name=name; this.age=age;}

Now, how to create an array (of 10 elements) of that new type?
[10]person

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#10467

On Sun, 22 Jan 2012 03:55:03 -0800, Archos wrote:

> I've created a custom type named person:
> 
>     function person(name, age) {this.name=name; this.age=age;}
> 
> Now, how to create an array (of 10 elements) of that new type?
> [10]person

Not tested, but maybe you could start with something like:

var i=10;var a=new array();while(i--)a[i]=new person("",0);

and work out why it doesn't work (because it probably won't).

Rgds

Denis McMahon

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#10470

Denis McMahon wrote:

> On Sun, 22 Jan 2012 03:55:03 -0800, Archos wrote:
>> I've created a custom type named person:
>> 
>>     function person(name, age) {this.name=name; this.age=age;}
>> 
>> Now, how to create an array (of 10 elements) of that new type?
>> [10]person
> 
> Not tested, but maybe you could start with something like:
> 
> var i=10;var a=new array();while(i--)a[i]=new person("",0);
> 
> and work out why it doesn't work (because it probably won't).

Will you *please* stop wasting everybody's time by posting obviously 
erroneous solutions?

Lack of code style aside, this works fine if you have that basic knowledge 
that it is `new Array' in ECMAScript implementations (case-sensitive).  The 
easier, today irrelevantly less compatible expression is, of course, the 
empty Array initializer, `[]'.

As `person' refers to a constructor, the identifier in the declaration and 
call should be `Person' by good convention, of course.


PointedEars
-- 
When all you know is jQuery, every problem looks $(olvable).

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#10468

Archos wrote:
> I've created a custom type named person:
>
>      function person(name, age) {this.name=name; this.age=age;}
>
> Now, how to create an array (of 10 elements) of that new type?
> [10]person

var persons = [
   new person("name 1", 1),
   new person("name 2", 2),
   new person("name 3", 3),
   ...
];

Arrays in Javascript don't have a particular type of elements however so 
you could freely mix your type with other types in a single array.


-- 

	Martin Honnen --- MVP Data Platform Development
	http://msmvps.com/blogs/martin_honnen/

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