Constructor limits

Can any one give me a list of points that we should not do with in constructor?

i know few like,

-> we should not do DML operations.

can you give more tips ?

March 8, 2013
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sfdcfox
As far as I am aware, the only thing you cannot do is DML in a constructor. In prior releases, it was not permitted to perform any callouts, but that restriction is no longer true.

March 8, 2013
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Deshraj Kumawat
The only limit I am aware of is you can not use DML statements in apex class constructor. Apart from this if you are using the same apex class as controller/extension for multiple pages, you can use initialize method (action function, will be invoked from page using the action attribute) to seperate the code for each visualforce page, this will avoid the execution of unnecessary code and will increase the performance.

I beleive below links can help you:

http://boards.developerforce.com/t5/Apex-Code-Development/Best-Practices-Constructor-or-Initialization/td-p/222271
http://www.salesforce.com/us/developer/docs/pages/Content/pages_compref_additional_controller.htm
http://wiki.developerforce.com/page/Apex_Code_Best_Practices

Thanks
Deshraj Kumawat

March 8, 2013
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