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maps.go
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/
maps.go
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package semantics
func IterateMapKeys(m map[uint64]uint64) uint64 {
var sum uint64
for k := range m {
sum = sum + k
}
return sum
}
func IterateMapValues(m map[uint64]uint64) uint64 {
var sum uint64
for _, v := range m {
sum = sum + v
}
return sum
}
func testIterateMap() bool {
var ok = true
// make a map with some things in it
m := make(map[uint64]uint64)
m[0] = 1
m[1] = 2
m[3] = 4
// iterate keys
ok = ok && (IterateMapKeys(m) == 4)
// iterate values
ok = ok && (IterateMapValues(m) == 7)
return ok
}
func testMapSize() bool {
var ok = true
m := make(map[uint64]uint64)
ok = ok && (uint64(len(m)) == 0)
m[0] = 1
m[1] = 2
m[3] = 4
ok = ok && (uint64(len(m)) == 3)
return ok
}