Need clarification to declare a variable.

Posted Date: 10 Aug 2012 Posted By:: Balamurali Member Level: Silver Member Rank: 0 Points: 2 Responses: 2

Hi all,

I would like to know which of the following is best and why?

1. Dim sName As String = String.Empty

2. Dim sName = String.Empty (Implicit convertion)

Responses

#683842 Author: Pawan Awasthi Member Level: Diamond Member Rank: 4 Date: 10/Aug/2012 Rating: Points: 4
Hai Bala, See the inline comments of your query: 1. Dim sName As String = String.Empty Here the variable is declared with the type and then initialized. So if this variable is used further then there is no need to convert it to the respective type as it is already of string type. 2. Dim sName = String.Empty (Implicit convertion) In this case, the variable is not having any type and initialized with the string variable. So when used, you need to convert it in to respective type and then you can use it. So here it will consume more cpu cycles and performance wise it will be slow as it need to first type cast and use it. Hope it will be helpful to you. Regards, Pawan Awasthi(DNS MVM) +91 8143683708 (pawansoftit@gmail.com) Outstanding Contribution Award..NTT Data Inc

#684035 Author: Ajesh Madhukar Dalvi Member Level: Silver Member Rank: 340 Date: 12/Aug/2012 Rating: Points: -1
[Response removed by Admin for invalid response to the thread or violation of forum policies.]

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