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Last item in a slice/array
source link: https://yourbasic.org/golang/last-item-in-slice/
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Last item in a slice/array
yourbasic.org/golang
Read last element
Use the index len(a)-1 to access the last element of
a slice or array a.
a := []string{"A", "B", "C"}
s := a[len(a)-1] // CGo doesn't have negative indexing like Python does. This is a deliberate design decision — keeping the language simple can help save you from subtle bugs.
Remove last element
a = a[:len(a)-1] // [A B]Watch out for memory leaks
Warning: If the slice is permanent and the element temporary, you may want to remove the reference to the element before slicing it off.
a[len(a)-1] = "" // Erase element (write zero value) a = a[:len(a)-1] // [A B]
Further reading
Slices and arrays in 6 easy steps
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