Your opinion is like to say all of the python application should rethink
and re-write their structure because they used default values. I think
having default values for parameters is just a feature which will make
codebase readable and smaller than before.
On Thursday, August 23, 2018 at 4:38:23 AM UTC+4:30, Louki Sumirniy wrote:
>
> There is a default value for everything in Go. Null. 0, "" and nil. As
> someone else said, if you want a parameter to be optional you probably need
> ...interface{} and then infer no parameter as 'use the default'. Going a
> little further, you can build default values into a constructor function
> for an interfaced type.
>
> Oh, probably the neatest solution is to make a struct that lets you input
> the parameters either in-order or with labels instead. Then you can use
> &TypeName{} to mean 'use defaults' or whichever parameters are not
> specified get automatically set to default, either unlabeled and ordered
> such that the values that will be asserted to defaults are not the first
> ones in a struct literal used to feed parameters in. Or make the names nice
> and concise so they aren't troublesome to add (and if your code is going to
> often use defaults, probably you won't even have to specify many values
> very often anyway).
>
> Assertions and labeled parameters are nice features but they don't really
> save you that much time. I would suggest that it's more likely you need to
> rethink the structure of your application and make slightly different named
> parameters for those calls that will use defaults for specific parameters.
>
> Another thing is that you can make null variables imply the use of
> defaults, then you only need to put 'nil' '""' or '0' into these parameters
> and the code will test and fill them automatically. Or if null isn't handy,
> you can define sentinel values for a type that indicate 'use defaults'.
>
> On Wednesday, 22 August 2018 14:39:37 UTC+2, Masoud Ghorbani wrote:
>>
>> Why there isn't function argument default value in Golang explicitly like
>> Typescript and Python?
>>
>
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