all: change 'if !(a in b)' to 'if a !in b' (#11330)

cmd/tools/vcheck-md.v

@@ -338,7 +338,7 @@ fn (mut ad AnchorData) check_link_target_match(fpath string, mut res CheckResult
 		}
 	}
 	for link, anchor_lists in ad.anchors {
-		if !(link in checked_headlines) {
+		if link !in checked_headlines {
 			if anchor_lists.len > 1 {
 				for anchor in anchor_lists {
 					line := match anchor {

vlib/context/cancel.v

@@ -96,7 +96,7 @@ fn (mut ctx CancelContext) cancel(remove_from_parent bool, err IError) {
 	}
 
 	ctx.mutex.@lock()
-	if !(ctx.err is none) {
+	if ctx.err !is none {
 		ctx.mutex.unlock()
 		// already canceled
 		return

vlib/net/html/dom.v

@@ -75,7 +75,7 @@ fn (mut dom DocumentObjectModel) add_tag_attribute(tag &Tag) {
 
 fn (mut dom DocumentObjectModel) add_tag_by_type(tag &Tag) {
 	tag_name := tag.name
-	if !(tag_name in dom.tag_type) {
+	if tag_name !in dom.tag_type {
 		dom.tag_type[tag_name] = [tag]
 	} else {
 		mut temp_array := dom.tag_type[tag_name]

vlib/v/util/module.v

@@ -55,7 +55,7 @@ pub fn mod_path_to_full_name(pref &pref.Preferences, mod string, path string) ?s
 	// absolute paths instead of 'vlib' & '.vmodules'
 	mut vmod_folders := ['vlib', '.vmodules', 'modules']
 	for base in pref.lookup_path.map(os.base(it)) {
-		if !(base in vmod_folders) {
+		if base !in vmod_folders {
 			vmod_folders << base
 		}
 	}

vlib/x/ttf/ttf.v

@@ -975,7 +975,7 @@ fn (mut tf TTF_File) create_kern_table0(vertical bool, cross bool) Kern0Table {
 
 fn (mut tf TTF_File) read_kern_table() {
 	dprintln('*** READ KERN TABLE ***')
-	if !('kern' in tf.tables) {
+	if 'kern' !in tf.tables {
 		return
 	}
 	table_offset := tf.tables['kern'].offset