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compiler: implement operations on nil hashmaps

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* comparing a map against nil
  * getting the length of a nil map
This commit is contained in:
Ayke van Laethem
2018-10-27 00:54:13 +02:00
parent c84fc6a670
commit 436901dc49
4 changed files with 31 additions and 7 deletions
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testdata/map.go
Vendored
+5
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@@ -26,6 +26,11 @@ func main() {
readMap(testmap2, "seven")
lookup(testmap2, "eight")
lookup(testmap2, "nokey")
// operations on nil maps
var nilmap map[string]int
println(m == nil, m != nil, len(m))
println(nilmap == nil, nilmap != nil, len(nilmap))
}
func readMap(m map[string]int, key string) {