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fix listforeachif readme

pull/231/head
Augusto 5 years ago
parent
commit
366cd76706
  1. 69
      subjects/listforeachif.en.md

69
subjects/listforeachif.en.md

@ -1,4 +1,4 @@
## listpushback
## listforeachif
### Instructions
@ -8,7 +8,7 @@ Write a function `ListForEachIf` that applies a function given as argument to th
- `f` is a functions that is applied to the node.
- `comp` is a predicate (a function that returns true or false) and will be use to determine if the function `f` would be applied to the node.
- `` is a predicate (a function that returns true or false) and will be use to determine if the function `f` would be applied to the node.
- The function given as argument must have a pointer as argument: `*NodeL`.
@ -25,11 +25,37 @@ type List struct {
Tail *NodeL
}
func CompStr(l *NodeL) bool {
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 IsNotNumeric_node(node *NodeL) bool {
switch node.Data.(type) {
case int, float32, float64, byte:
return false
case string, rune:
return true
}
return true
}
func ListForEachIf(l *List, f func(*NodeL), comp func(*NodeL) bool) {
func ListForEachIf(l *List, f func(*NodeL), cond func(*NodeL) bool) {
}
```
@ -42,30 +68,29 @@ Here is a possible [program](TODO-LINK) to test your function :
package main
import (
"fmt"
piscine ".."
"fmt"
)
func PrintElem(l *List) {
fmt.Println(l.Head.Data)
func PrintElem(node *piscine.NodeL) {
fmt.Println(node.Data)
}
func StringToInt(l *List) {
count := 1
l.Head.Data = count
func StringToInt(node *piscine.NodeL) {
node.Data = 2
}
func PrintList(l *List) {
m := l.Head
for m != nil {
fmt.Print(m.Data, " -> ")
m = m.Next
func PrintList(l *piscine.List) {
it := l.Head
for it != nil {
fmt.Print(it.Data, "->")
it = it.Next
}
fmt.Print(l.Tail)
fmt.Println()
}
func main() {
link := &List{}
link := &piscine.List{}
piscine.ListPushBack(link, 1)
piscine.ListPushBack(link, "hello")
@ -75,16 +100,16 @@ func main() {
piscine.ListPushBack(link, "!")
piscine.ListPushBack(link, 54)
PrintAllList(link)
PrintList(link)
fmt.Println()
fmt.Println("--------function applied--------")
piscine.ListForEachIf(link, PrintElem, CompStr)
piscine.ListForEachIf(link, PrintElem, piscine.IsPositive_node)
piscine.ListForEachIf(link, StringToInt, CompStr)
piscine.ListForEachIf(link, StringToInt, piscine.IsNotNumeric_node)
fmt.Println("--------function applied--------")
PrintAllList(link)
PrintList(link)
fmt.Println()
}

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