Re: [flexcoders] to use object or array -- 'Adobe Flex 2 Training from the Source' book
On Thursday 05 Apr 2007, Gordon Smith wrote: Use a Array when you look up a value by a numeric index. Use an Object when you look up a value by a string key like name or property. I must admit to using Object myself - how does the newer Dictionary class compare to that, anyone ? -- Tom Chiverton Helping to economically deliver cutting-edge ROI on: http://thefalken.livejournal.com This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at St James's Court Brown Street Manchester M2 2JF. A list of members is available for inspection at the registered office. Any reference to a partner in relation to Halliwells LLP means a member of Halliwells LLP. Regulated by the Law Society. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 8008. For more information about Halliwells LLP visit www.halliwells.com. -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/flexcoders/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [flexcoders] to use object or array -- 'Adobe Flex 2 Training from the Source' book
Dictionary lets you index by object instead of string. We use one to keep track of loaded modules. We don't want to have worry about whether the modules have a unique string identification, so we can just use the module object instead. Dictionary also supports weak references so you don't have to worry so much about cleaning up. -Original Message- From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tom Chiverton Sent: Tuesday, April 10, 2007 1:44 AM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] to use object or array -- 'Adobe Flex 2 Training from the Source' book On Thursday 05 Apr 2007, Gordon Smith wrote: Use a Array when you look up a value by a numeric index. Use an Object when you look up a value by a string key like name or property. I must admit to using Object myself - how does the newer Dictionary class compare to that, anyone ? -- Tom Chiverton Helping to economically deliver cutting-edge ROI on: http://thefalken.livejournal.com This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at St James's Court Brown Street Manchester M2 2JF. A list of members is available for inspection at the registered office. Any reference to a partner in relation to Halliwells LLP means a member of Halliwells LLP. Regulated by the Law Society. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 8008. For more information about Halliwells LLP visit www.halliwells.com. -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links
Re: [flexcoders] to use object or array -- 'Adobe Flex 2 Training from the Source' book
catObj is appended to the array in the first position so that the Combo box can display ALL as the first option in the list Chad Gray wrote: I am reading the 'Adobe Flex 2 Training from the Source' book and have a question as to why they used an object and not array. Page 118 for those that have the book. What they are doing is taking an array (categories) and appending a new row to it Name=All and CategoryID=0. Is there any advantage/disadvant age to setting catObj as an object and not array? I would think you would want them to be the same thing. // define new var catObj as an object var catObj:Object = new Object(); // set the new object var NAME to ALL and set the CATEGORYID to 0 catObj.name = All; catObj.categoryID = 0; // now use addItemAt to append the catObj object to the categories array at the 0 position categories.addItemA t(catObj, 0); The book is good, but the OOP stuff when making your own actionscript classes in lesson 5 kind of confused me. Hopefully I will fully understand what they did as I learn more about AS.
[flexcoders] to use object or array -- 'Adobe Flex 2 Training from the Source' book
I am reading the 'Adobe Flex 2 Training from the Source' book and have a question as to why they used an object and not array. Page 118 for those that have the book. What they are doing is taking an array (categories) and appending a new row to it Name=All and CategoryID=0. Is there any advantage/disadvantage to setting catObj as an object and not array? I would think you would want them to be the same thing. // define new var catObj as an object var catObj:Object = new Object(); // set the new object var NAME to ALL and set the CATEGORYID to 0 catObj.name = All; catObj.categoryID = 0; // now use addItemAt to append the catObj object to the categories array at the 0 position categories.addItemAt(catObj, 0); The book is good, but the OOP stuff when making your own actionscript classes in lesson 5 kind of confused me. Hopefully I will fully understand what they did as I learn more about AS.
RE: [flexcoders] to use object or array -- 'Adobe Flex 2 Training from the Source' book
Use a Array when you look up a value by a numeric index. Use an Object
when you look up a value by a string key like name or property.
BTW, I think using Object-literal syntax to combine these four lines
into
categories.addItemAt({ name: All, categoryID: o });
will create smaller, faster code. It's also more readable, IMHO.
- Gordon
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Chad Gray
Sent: Thursday, April 05, 2007 1:38 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] to use object or array -- 'Adobe Flex 2 Training
from the Source' book
I am reading the 'Adobe Flex 2 Training from the Source' book and have a
question as to why they used an object and not array. Page 118 for those
that have the book.
What they are doing is taking an array (categories) and appending a new
row to it Name=All and CategoryID=0.
Is there any advantage/disadvantage to setting catObj as an object and
not array? I would think you would want them to be the same thing.
// define new var catObj as an object
var catObj:Object = new Object();
// set the new object var NAME to ALL and set the CATEGORYID to 0
catObj.name = All;
catObj.categoryID = 0;
// now use addItemAt to append the catObj object to the categories array
at the 0 position
categories.addItemAt(catObj, 0);
The book is good, but the OOP stuff when making your own actionscript
classes in lesson 5 kind of confused me. Hopefully I will fully
understand what they did as I learn more about AS.
