public private -

[tonynt]

Hello,

I could find in the forum "private double - private int" and I know about difference of double and int and I´m trying to use int when possible for cpu. But cant find an explanation for the difference between "private - public - "_" "

private int/double
public int/double
int/double

Thanks
Tony

[NinjaTrader_Jesse]

Hello,

Private and Public really wouldn't be explained much on this forum as these are just C# concepts rather than anything that is specific to NinjaTrader. You do use public properties in NinjaTrader, and also private variables, it would depend on the use case for what access modifier needs to be used.

To better understand these "access modifiers" you could review the MSDN information on "C# access modifiers" https://msdn.microsoft.com/en-us/library/wxh6fsc7.aspx

For a less dry explanation we can use google to get some other tutorials like the following which has a huge amount of information: http://www.codeproject.com/Articles/...-Access-Modifi

Because NinjaTrader utilizes C#, you can find a huge amount of information on this language outside of NinjaTrader documents which in turn will help you develop items with more ease.

I look forward to being of further assistance.

[tonynt]

Hello,

thank you for your reply.

Public and private clear but when to use a variable without both?

Thanks
Tony

[NinjaTrader_Jesse]

Hello,

Again this falls back to standard C# concepts.

A blank or no modifer variable is a private varaible by default.

To know if the variable needs a public or private modifier depends on how you will use it in your logic.

I could not say it has to be public or private without knowing how the variable would be used in logic. A public variable is generally used where you need that variable public or visible to other classes or when making a Property that shows up in the Property Grid. A private variable is generally used when you do not need to make it public or it is only used in code.

Again this is up to your best judgement and what you need to do based on the logic you make.

The only time this would play a specific role in NinjaTrader would be related to making Plots or User Inputs that show up in the user interface, those properties are public and are marked with [ ] attributes above the class. you can see an example of one of these properties in the SMA indicator.

Please let me know if I may be of further assistance.

[tonynt]

Hello,

thanks.

This is what I asked for "A blank or no modifer variable is a private varaible by default. "


Tony

[koganam]

Hello,

thanks.

This is what I asked for "A blank or no modifer variable is a private varaible by default. "


Tony

Do not rely on default access modifiers. Specify exactly what you want. It makes your code clearer when you come to read it a few months from now.

Just my $0.02.