array: make .set() private + format

compiler/main.v

@@ -311,7 +311,7 @@ fn (v mut V) compile() {
 		d.writeln(v.prof_counters())
 	}
 	dd := d.str()
-	cgen.lines.set(defs_pos, dd)// TODO `def.str()` doesn't compile
+	cgen.lines[defs_pos] = dd// TODO `def.str()` doesn't compile
 
   v.generate_main()
 

vlib/builtin/array.v

@@ -4,7 +4,7 @@
 
 module builtin
 
-import strings 
+import strings
 
 struct array {
 pub:
@@ -28,10 +28,10 @@ fn new_array(mylen, cap, elm_size int) array {
 }
 
 
-// TODO 
+// TODO
 pub fn _make(len, cap, elm_size int) array {
-	return new_array(len, cap, elm_size) 
-} 
+	return new_array(len, cap, elm_size)
+}
 
 // Private function, used by V (`nums := [1, 2, 3]`)
 fn new_array_from_c_array(len, cap, elm_size int, c_array voidptr) array {
@@ -137,10 +137,10 @@ pub fn (s array) slice(start, _end int) array {
 		panic('invalid slice index: $start > $end')
 	}
 	if end > s.len {
-		panic('runtime error: slice bounds out of range ($end >= $s.len)') 
+		panic('runtime error: slice bounds out of range ($end >= $s.len)')
 	}
-	if start < 0 { 
-		panic('runtime error: slice bounds out of range ($start < 0)') 
+	if start < 0 {
+		panic('runtime error: slice bounds out of range ($start < 0)')
 	}
 	l := end - start
 	res := array {
@@ -148,12 +148,12 @@ pub fn (s array) slice(start, _end int) array {
 		data: s.data + start * s.element_size
 		len: l
 		cap: l
-		//is_slice: true 
+		//is_slice: true
 	}
 	return res
 }
 
-pub fn (a mut array) set(idx int, val voidptr) {
+fn (a mut array) set(idx int, val voidptr) {
 	if idx < 0 || idx >= a.len {
 		panic('array index out of range: $idx / $a.len')
 	}
@@ -176,8 +176,8 @@ fn (arr mut array) _push(val voidptr) {
 	arr.len++
 }
 
-// `val` is array.data 
-// TODO make private, right now it's used by strings.Builder 
+// `val` is array.data
+// TODO make private, right now it's used by strings.Builder
 pub fn (arr mut array) _push_many(val voidptr, size int) {
 	if arr.len >= arr.cap - size {
 		cap := (arr.len + size) * 2
@@ -214,31 +214,31 @@ pub fn (a array) clone() array {
 		element_size: a.element_size
 		data: malloc(a.cap * a.element_size)
 	}
-	C.memcpy(arr.data, a.data, a.cap * a.element_size) 
-	return arr 
-} 
+	C.memcpy(arr.data, a.data, a.cap * a.element_size)
+	return arr
+}
 
 //pub fn (a []int) free() {
 pub fn (a array) free() {
 	//if a.is_slice {
-		//return 
-	//} 
+		//return
+	//}
 	C.free(a.data)
 }
 
 // "[ 'a', 'b', 'c' ]"
 pub fn (a []string) str() string {
-	mut sb := strings.new_builder(a.len * 3) 
-	sb.write('[') 
+	mut sb := strings.new_builder(a.len * 3)
+	sb.write('[')
 	for i := 0; i < a.len; i++ {
 		val := a[i]
-		sb.write('"$val"') 
+		sb.write('"$val"')
 		if i < a.len - 1 {
-			sb.write(', ') 
+			sb.write(', ')
 		}
 	}
-	sb.write(']') 
-	return sb.str() 
+	sb.write(']')
+	return sb.str()
 }
 
 pub fn (b []byte) hex() string {