It's in the section you link to: The key is interpreted as a field name for struct literals*, an index for > array and slice literals*, and a key for map literals.
(emphasis mine). The syntax allows you to specify keys for arrays and slices and interprets them as indices. Rune-literals (like 'a') are integers, as `rune` is an alias for `int32`. On Tue, Jun 22, 2021 at 5:40 PM Vaibhav Maurya <vaibhav.se...@gmail.com> wrote: > Hi, > > Please help me to understand the following syntax mentioned in the Golang > language specification document. > > https://golang.org/ref/spec#Composite_literals > > following is the search string for CTRL + F > // vowels[ch] is true if ch is a vowel \ > > Following declaration and initialization is confusing. > vowels := [128]bool{'a': true, 'e': true, 'i': true, 'o': true, 'u': true, > 'y': true} > > Here one can see the vowels is an array. Where in the array initialization > syntax, there is a key value pair. I believe *bool *is the primitive > type, so the array values should be either true or false. > Why there are key value pair separated by colon in the initialization. > > -- > 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/83571d7c-7dee-47f3-b105-4286320e88d6n%40googlegroups.com > <https://groups.google.com/d/msgid/golang-nuts/83571d7c-7dee-47f3-b105-4286320e88d6n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAEkBMfEHUW_N%3DNMXnSG8aPuGJcpPb4erO-V451_jTts8iCyhPQ%40mail.gmail.com.
