On Tue, May 28, 2019 at 11:04 AM Trig wrote:
> Whoops... forgot to add the top line to the code syntax. I really wish
> you could edit existing posts in this group.
>
> On Tuesday, May 28, 2019 at 10:03:05 AM UTC-5, Trig wrote:
>>
>> package main
>>
>> import "fmt"
>>
>> const (
>> ExposedConstant = "1" // exposed outside of package
>> internalConstant = "2" // for use anywhere in package only
>> )
>>
>> func main() {
>> const functionConstant = "3" // usable anywhere in main func
>>
>> fmt.Println(ExposedConstant, internalConstant, functionConstant)
>> }
>>
>>
>>
https://golang.org/ref/spec#Constants
Note that the const keyword can only be used with primitive types.
For more complicated values, I tend to use functions/methods. (the GC
compiler's inliner is smart enough to inline a function call to a function
with exactly one return statement containing a small struct literal)
e.g. https://play.golang.org/p/AaLXcZ-CYEY
package main
> import "fmt"
> // Foo is a structtype Foo struct {
> A int
> B string
> }
> // DefaultFoo returns a useful default structfunc DefaultFoo() Foo {
> return Foo{
> A: 1,
> B: "abcd",
> }
> }
> // Bim does somethingfunc Bim() {
> fmt.Printf("%+v\n", DefaultFoo())
> }
>
>
>> On Tuesday, May 28, 2019 at 7:12:06 AM UTC-5, Ashutosh Baghel wrote:
>>>
>>> Hello folks,
>>>
>>> I want to declare a few variables constant. But I guess there is nothing
>>> as "Constant" type in GoLang. How do I achieve this in GoLang?
>>>
>> For those with an interest in the inlining behavior, Matt Godbolt's
Compiler Explorer supports Go. Here's a small modification of the example
above (mostly just moved it out of the main package and removed the imports
to reduce the amount of code generated): https://go.godbolt.org/z/izOJVU
--
> You received this message because you are subscribed to the Google Groups
> "golang-nuts" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to golang-nuts+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/golang-nuts/c9b3b7df-b2da-42ce-bd9e-44ee1eb589ba%40googlegroups.com
>
> .
> For more options, visit https://groups.google.com/d/optout.
>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/golang-nuts/CANrC0Bj_iiNPTxVzXF%2By4r-H4DXa7_HU%2BjF9%3D1jk7juvZ34zSA%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
