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43 lines
863 B

package correct
// compare each element of the linked list to see if it is a String
func IsPositive_node(node *NodeL) bool {
switch node.Data.(type) {
case int, float32, float64, byte:
return node.Data.(int) > 0
case string, rune:
return false
}
return false
}
func IsNegative_node(node *NodeL) bool {
switch node.Data.(type) {
case int, float32, float64, byte:
return node.Data.(int) > 0
case string, rune:
return false
}
return false
}
func IsNumeric_node(node *NodeL) bool {
switch node.Data.(type) {
case int, float32, float64, byte:
return true
case string, rune:
return false
}
return false
}
// applies the function f on each string if the boolean function comp returns true
func ListForEachIf(l *List, f func(*NodeL), comp func(*NodeL) bool) {
it := l.Head
for it != nil {
if comp(it) {
f(it)
}
it = it.Next
}
}