diff --git a/examples/tetris/tetris.v b/examples/tetris/tetris.v
index edbdd5b056..9439d433f5 100644
--- a/examples/tetris/tetris.v
+++ b/examples/tetris/tetris.v
@@ -402,6 +402,7 @@ fn key_down(wnd voidptr, key, code, action, mods int) {
 				game.state = .running
 			}
 		}
+		else {}
 	}
 
 	if game.state != .running {
@@ -434,5 +435,6 @@ fn key_down(wnd voidptr, key, code, action, mods int) {
 	glfw.KeyDown {
 		game.move_tetro() // drop faster when the player presses <down>
 	}
+	else { }
 	}
 }
diff --git a/vlib/bitfield/bitfield_test.v b/vlib/bitfield/bitfield_test.v
index 529fdbcd03..8d86e6b64e 100644
--- a/vlib/bitfield/bitfield_test.v
+++ b/vlib/bitfield/bitfield_test.v
@@ -117,6 +117,9 @@ fn test_hamming() {
 				input1.setbit(i)
 				input2.setbit(i)
 			}
+			else {
+
+			}
 		}
 	}
 	assert count == bitfield.hamming(input1, input2)
diff --git a/vlib/builtin/utf8.v b/vlib/builtin/utf8.v
index 166ce91eb3..8350384850 100644
--- a/vlib/builtin/utf8.v
+++ b/vlib/builtin/utf8.v
@@ -120,7 +120,7 @@ pub fn string_from_wide(_wstr &u16) string {
 
 pub fn string_from_wide2(_wstr &u16, len int) string {
     $if windows {
-    	num_chars := C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, 0, 0, 0, 0))
+    	num_chars := C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, 0, 0, 0, 0)
     	mut str_to := malloc(num_chars + 1)
     	if !isnil(str_to) {
     		C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, str_to, num_chars, 0, 0)
diff --git a/vlib/compiler/if_match.v b/vlib/compiler/if_match.v
index 284e7fbbfa..3bf7b46bab 100644
--- a/vlib/compiler/if_match.v
+++ b/vlib/compiler/if_match.v
@@ -203,14 +203,8 @@ fn (p mut Parser) match_statement(is_expr bool) string {
 		i++
 		p.fgen_nl()
 	}
-
-	//if is_expr {
-		// we get here if no else found, ternary requires "else" branch
-		p.warn('match expression requires `else`')
-	//}
-
-	p.returns = false // only get here when no default, so return is not guaranteed
-
+	p.error('match expression requires `else`')
+	//p.returns = false // only get here when no default, so return is not guaranteed
 	return ''
 }
 
diff --git a/vlib/compiler/tests/match_test.v b/vlib/compiler/tests/match_test.v
index c5ce1cf102..c0fb8108d7 100644
--- a/vlib/compiler/tests/match_test.v
+++ b/vlib/compiler/tests/match_test.v
@@ -21,7 +21,7 @@ fn test_match_integers() {
         2 { 3 }
         else { 5 }
     } == 3
-    
+
     assert match 0 {
         1 { 2 }
         2 { 3 }
@@ -31,7 +31,7 @@ fn test_match_integers() {
     assert match 1 {
         else { 5 }
     } == 5
-    
+
     a = 0
     match 2 {
         0 { a = 1 }
@@ -42,7 +42,7 @@ fn test_match_integers() {
         }
     }
     assert a == 3
-    
+
     a = 0
     match 1 {
         0 { a = 1 }
@@ -51,6 +51,7 @@ fn test_match_integers() {
             a = a + 2
             a = a + 2
         }
+       else {}
     }
     assert a == 6
 
@@ -61,7 +62,7 @@ fn test_match_integers() {
         }
     }
     assert a == -2
-} 
+}
 
 fn test_match_enums(){
     mut b := Color.red
diff --git a/vlib/encoding/base64/base64.v b/vlib/encoding/base64/base64.v
index 64e6a756f6..f708f267d9 100644
--- a/vlib/encoding/base64/base64.v
+++ b/vlib/encoding/base64/base64.v
@@ -5,7 +5,7 @@
 module base64
 
 const (
-	Index = [int(0), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	Index = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 	62, 63, 62, 62, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0,
 	0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
diff --git a/vlib/encoding/csv/writer.v b/vlib/encoding/csv/writer.v
index 4bd6c73063..0ed39705e6 100644
--- a/vlib/encoding/csv/writer.v
+++ b/vlib/encoding/csv/writer.v
@@ -39,7 +39,7 @@ pub fn (w mut Writer) write(record []string) ?bool {
 		}
 
 		w.sb.write('"')
-		
+
 		for field.len > 0 {
 			mut i := field.index_any('"\r\n')
 			if i < 0 {
@@ -52,12 +52,13 @@ pub fn (w mut Writer) write(record []string) ?bool {
 			if field.len > 0 {
 				z := field[0]
 				match z {
-				`"` {
-					w.sb.write('""')
-				}
-				`\r`, `\n` {
-					w.sb.write(le)
-				}
+					`"` {
+						w.sb.write('""')
+					}
+					`\r`, `\n` {
+						w.sb.write(le)
+					}
+					else {}
 				}
 				field = field[1..]
 			}
diff --git a/vlib/encoding/utf8/utf8_util.v b/vlib/encoding/utf8/utf8_util.v
index ffe5ba8d0f..26927b5024 100644
--- a/vlib/encoding/utf8/utf8_util.v
+++ b/vlib/encoding/utf8/utf8_util.v
@@ -47,7 +47,7 @@ pub fn u_to_upper(s ustring) ustring {
 
 // to_lower return an lowercase string from a string
 pub fn to_lower(s string) string {
-	return up_low(s, false) 
+	return up_low(s, false)
 }
 
 // u_to_lower return an lowercase string from a ustring
@@ -69,10 +69,10 @@ fn utf8util_char_len(b byte) int {
 }
 
 
-// 
-// if upper_flag == true  then make low ==> upper conversion 
+//
+// if upper_flag == true  then make low ==> upper conversion
 // if upper_flag == false then make upper ==> low conversion
-// 
+//
 // up_low make the dirt job
 fn up_low(s string, upper_flag bool) string {
 	mut _index := 0
@@ -90,14 +90,14 @@ fn up_low(s string, upper_flag bool) string {
 			}
 		}
 		else if ch_len > 1 && ch_len < 5{
-			mut lword := int(0)
+			mut lword := 0
 
 			for i:=0; i < ch_len ; i++ {
-				lword = (lword << 8 ) | int( s.str[_index + i] ) 
+				lword = (lword << 8 ) | int( s.str[_index + i] )
 			}
 
 			//C.printf(" #%d (%x) ", _index, lword)
-			
+
 			mut res := int(0)
 
 			// 2 byte utf-8
@@ -110,14 +110,14 @@ fn up_low(s string, upper_flag bool) string {
 			// byte format: 1110xxxx 10xxxxxx 10xxxxxx
 			//
 			else if ch_len == 3 {
-				res = ( lword & 0x0f0000 ) >> 4 | ( lword & 0x3f00 ) >> 2 | ( lword & 0x3f ) 
+				res = ( lword & 0x0f0000 ) >> 4 | ( lword & 0x3f00 ) >> 2 | ( lword & 0x3f )
 			}
 			// 4 byte utf-8
 			// byte format: 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
 			//
 			else if ch_len == 4 {
-				res = (( lword & 0x07000000 ) >> 6)  | (( lword & 0x003f0000 ) >> 4) | 
-						(( lword & 0x00003F00 ) >> 2 ) | ( lword & 0x0000003f ) 
+				res = (( lword & 0x07000000 ) >> 6)  | (( lword & 0x003f0000 ) >> 4) |
+						(( lword & 0x00003F00 ) >> 2 ) | ( lword & 0x0000003f )
 			}
 
 			//C.printf("len: %d code: %04x ",ch_len,res)
@@ -125,15 +125,15 @@ fn up_low(s string, upper_flag bool) string {
 			//C.printf(" utf8 index: %d ",ch_index)
 
 			// char not in table, no need of conversion
-			if ch_index == 0 { 
+			if ch_index == 0 {
 				for i in 0..ch_len {
-					str_res[_index + i] = s.str[_index + i] 
+					str_res[_index + i] = s.str[_index + i]
 				}
 				//C.printf("\n")
 			}else{
 				tab_char := u16(unicode_con_table_up_to_low[ch_index])
 				//C.printf("tab_char: %04x ",tab_char)
-				
+
 				if ch_len == 2 {
 					ch0 := byte( (tab_char >> 6) & 0x1f ) | 0xc0  	/*110x xxxx*/
 					ch1 := byte( (tab_char >> 0) & 0x3f ) | 0x80		/*10xx xxxx*/
@@ -141,12 +141,12 @@ fn up_low(s string, upper_flag bool) string {
 
 					str_res[ _index + 0 ] = ch0
 					str_res[ _index + 1 ] = ch1
-					
+
 					//****************************************************************
 					//  BUG: doesn't compile, workaround use shitf to right of 0 bit
 					//****************************************************************
 					//str_res[_index + 1 ] = byte( tab_char & 0xbf )			/*1011 1111*/
-					
+
 				}
 				else if ch_len == 3 {
 					ch0 := byte( (tab_char >> 12) & 0x0f ) | 0xe0  	/*1110 xxxx*/
@@ -160,24 +160,24 @@ fn up_low(s string, upper_flag bool) string {
 				}
 				// TODO: write if needed
 				else if ch_len == 4 {
-					// place holder!! 
+					// place holder!!
 					// at the present time simply copy the utf8 char
 					for i in 0..ch_len {
-						str_res[_index + i] = s.str[_index + i] 
+						str_res[_index + i] = s.str[_index + i]
 					}
 				}
 			}
 
-		}		
+		}
 		// other cases, just copy the string
 		else{
 			for i in 0..ch_len {
-				str_res[_index + i] = s.str[_index + i] 
+				str_res[_index + i] = s.str[_index + i]
 			}
 		}
 
 		old_index = _index
-		_index += ch_len	
+		_index += ch_len
 
 		// we are done, exit the loop
 		if _index >= s.len {
@@ -201,7 +201,7 @@ fn find_char_in_table( in_code u16, upper_flag bool) int {
 
 	mut first_index := int(0) 										// first index of our utf8 char range
 	mut last_index := int(unicode_con_table_up_to_low.len >> 1)		// last+1 index of our utf8 char range
-	mut index := int(0)	
+	mut index := int(0)
 	mut x := u16(0)
 
 	mut offset:=int(0) // up to low
@@ -215,7 +215,7 @@ fn find_char_in_table( in_code u16, upper_flag bool) int {
 	for {
 		index = (first_index+last_index) >> 1
 		x = unicode_con_table_up_to_low[ (index<<1)+offset ]
-		
+
 		//C.printf("(%d..%d) index:%d base[%04x]==>[%04x]\n",first_index,last_index,index,in_code,x)
 
 		if x == in_code {
@@ -223,7 +223,7 @@ fn find_char_in_table( in_code u16, upper_flag bool) int {
 			return int( (index<<1) + i_step)
 		}
 		else if x>in_code {
-			last_index=index 
+			last_index=index
 
 		}else {
 			first_index=index
@@ -246,7 +246,7 @@ fn find_char_in_table( in_code u16, upper_flag bool) int {
 *  source: https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/nls/rbagslowtoupmaptable.htm?view=embed
 *  term of use: https://www.ibm.com/legal?lnk=flg-tous-usen
 *  license: not stated, general fair use license applied
-* 
+*
 *  regex expresion => replace from html table to V :
 *  src: ([A-F\d]+)\s+([A-F\d]+)\s+(.*)
 *  dst: 0x$1, 0x$2, // $3
diff --git a/vlib/gg/gg.v b/vlib/gg/gg.v
index 85f489d1d4..21fbfdb833 100644
--- a/vlib/gg/gg.v
+++ b/vlib/gg/gg.v
@@ -382,7 +382,7 @@ pub fn (ctx &GG) draw_line_c(x, y, x2, y2 f32, color gx.Color) {
 	C.glDeleteBuffers(1, &ctx.vbo)
 	ctx.shader.use()
 	ctx.shader.set_color('color', color)
-	vertices := [f32(x), f32(y), f32(x2), f32(y2)] !
+	vertices := [x, y, x2, y2] !
 	gl.bind_vao(ctx.vao)
 	gl.set_vbo(ctx.vbo, vertices, C.GL_STATIC_DRAW)
 	gl.vertex_attrib_pointer(0, 2, C.GL_FLOAT, false, 2, 0)
@@ -433,7 +433,7 @@ pub fn (ctx &GG) draw_image(x, y, w, h f32, tex_id u32) {
 	gl.enable_vertex_attrib_array(1)
 	gl.vertex_attrib_pointer(2, 2, C.GL_FLOAT, false, 8, 6)
 	gl.enable_vertex_attrib_array(2)
-	gl.bind_2d_texture(u32(tex_id))
+	gl.bind_2d_texture(tex_id)
 	gl.bind_vao(ctx.vao)
 	gl.draw_elements(C.GL_TRIANGLES, 6, C.GL_UNSIGNED_INT, 0)
 }
diff --git a/vlib/glm/glm.v b/vlib/glm/glm.v
index 1207a72fa3..cefca3436d 100644
--- a/vlib/glm/glm.v
+++ b/vlib/glm/glm.v
@@ -6,7 +6,7 @@ module glm
 
 import math
 
-/* 
+/*
 #flag -lmyglm
 # f32* myglm_ortho(f32, f32, f32, f32);
 # f32* myglm_translate(f32, f32, f32);
@@ -117,11 +117,11 @@ fn (a Vec3) print() {
 	x := a.x
 	y := a.y
 	z := a.z
-	C.printf('vec3{%f,%f,%f}\n',x,y,z) 
+	C.printf('vec3{%f,%f,%f}\n',x,y,z)
 	// println('vec3{$x,$y,$z}')
 }
 
-/* 
+/*
 fn rotate(m Mat4, angle f32, vec Vec3) Mat4 {
 	// # t_mat4 m;
 	// println('rotate done')
@@ -154,7 +154,7 @@ pub fn translate(m Mat4, v Vec3) Mat4 {
 	return mat4(out)
 }
 
-/* 
+/*
 fn normalize(vec Vec3) Vec3 {
 	# return myglm_normalize(vec);
 	return Vec3{}
@@ -165,13 +165,13 @@ pub fn ortho(left, right, bottom, top f32) Mat4 {
 	//println('glm ortho($left, $right, $bottom, $top)')
 	// mat<4, 4, T, defaultp> Result(static_cast<T>(1));
 	n := 16
-	mut res := f32_calloc(n) 
-	res[0] = 2.0 / f32(right - left)  
-	res[5] = 2.0 / f32(top - bottom) 
-	res[10] = 1.0 
-	res[12] = - (right + left) / (right - left) 
-	res[13] = - (top + bottom) / (top - bottom) 
-	res[15] = 1.0 
+	mut res := f32_calloc(n)
+	res[0] = 2.0 / (right - left)
+	res[5] = 2.0 / (top - bottom)
+	res[10] = 1.0
+	res[12] = - (right + left) / (right - left)
+	res[13] = - (top + bottom) / (top - bottom)
+	res[15] = 1.0
 	return mat4(res)
 }
 
@@ -277,24 +277,24 @@ fn ortho_js(left, right, bottom, top f32) &f32 {
 	lr := 1.0 / (left - right)
 	bt := 1.0 / (bottom - top)
 	nf := 1.0 / 1.0// (mynear -myfar)
-	mut out := (*f32)( malloc (sizeof(f32) * 16)) 
-	 out[0] = -2.0 * lr 
-	 out[1] = 0 
-	 out[2] = 0 
-	 out[3] = 0 
-	 out[4] = 0 
-	 out[5] = -2.0 * bt 
-	 out[6] = 0 
-	 out[7] = 0 
-	 out[8] = 0 
-	 out[9] = 0 
-	 out[10] = 2.0 * nf 
-	 out[11] = 0 
-	 out[12] = (left + right) * lr 
-	 out[13] = (top + bottom) * bt 
+	mut out := (*f32)( malloc (sizeof(f32) * 16))
+	 out[0] = -2.0 * lr
+	 out[1] = 0
+	 out[2] = 0
+	 out[3] = 0
+	 out[4] = 0
+	 out[5] = -2.0 * bt
+	 out[6] = 0
+	 out[7] = 0
+	 out[8] = 0
+	 out[9] = 0
+	 out[10] = 2.0 * nf
+	 out[11] = 0
+	 out[12] = (left + right) * lr
+	 out[13] = (top + bottom) * bt
 	 out[14] = 1.0 * nf//(far + near) * nf;
-	 out[15] = 1 
-	return out 
+	 out[15] = 1
+	return out
 	//f := 0.0
 	//return &f
 }
@@ -307,7 +307,7 @@ fn cross(a, b Vec3) Vec3 {
 	return Vec3{}
 }
 
-/* 
+/*
 fn perspective(degrees f32, ratio f32, a, b f32) Mat4 {
 	// println('lang per degrees=$degrees ratio=$ratio a=$a b=$b')
 	// # printf("lang pers degrees=%f ratio=%f a=%f b=%f\n", degrees, ratio, a,b);
diff --git a/vlib/json/json_primitives.v b/vlib/json/json_primitives.v
index 81f4a1e4ee..8b1897f48f 100644
--- a/vlib/json/json_primitives.v
+++ b/vlib/json/json_primitives.v
@@ -74,7 +74,7 @@ fn jsdecode_f32(root &C.cJSON) f32 {
 	if isnil(root) {
 		return f32(0)
 	}
-	return f32(root.valuedouble)
+	return root.valuedouble
 }
 
 fn jsdecode_f64(root &C.cJSON) f64 {
diff --git a/vlib/math/bits.v b/vlib/math/bits.v
index b1a0241e4a..a320973b87 100644
--- a/vlib/math/bits.v
+++ b/vlib/math/bits.v
@@ -12,8 +12,8 @@ const (
 	mask      = 0x7FF
 	shift     = 64 - 11 - 1
 	bias      = 1023
-	sign_mask = u64(u64(1) << 63)
-	frac_mask = u64(u64(u64(1)<<u64(shift)) - u64(1))
+	sign_mask = (u64(1) << 63)
+	frac_mask = ((u64(1)<<u64(shift)) - u64(1))
 )
 
 // inf returns positive infinity if sign >= 0, negative infinity if sign < 0.
diff --git a/vlib/math/math.v b/vlib/math/math.v
index 19a18a2f20..286402b0b1 100644
--- a/vlib/math/math.v
+++ b/vlib/math/math.v
@@ -140,9 +140,9 @@ pub fn factorial(n f64) f64 {
 			return max_f64
 	}
 
-	/* Otherwise return n!. */
+	// Otherwise return n!.
 	if n == f64(i64(n)) && n >= 0.0 {
-			return f64(factorials[i64(n)])
+		return factorials[i64(n)]
 	}
 
 	return gamma(n + 1.0)
diff --git a/vlib/net/socket.v b/vlib/net/socket.v
index d906228a2d..dc5fd205ab 100644
--- a/vlib/net/socket.v
+++ b/vlib/net/socket.v
@@ -277,7 +277,7 @@ pub fn (s Socket) read_line() string {
 	mut res := '' // The final result, including the ending \n.
 	for {
 		mut line := '' // The current line. Can be a partial without \n in it.
-		n := int(C.recv(s.sockfd, buf, MAX_READ-1, MSG_PEEK))
+		n := C.recv(s.sockfd, buf, MAX_READ-1, MSG_PEEK)
 		if n == -1 { return res }
 		if n == 0 {	return res }
 		buf[n] = `\0`
diff --git a/vlib/net/urllib/urllib.v b/vlib/net/urllib/urllib.v
index 15feb72f5b..199f75f48b 100644
--- a/vlib/net/urllib/urllib.v
+++ b/vlib/net/urllib/urllib.v
@@ -103,8 +103,9 @@ fn should_escape(c byte, mode EncodingMode) bool {
 			// everything, so escape nothing.
 			return false
 		}
+		else {}
 		}
-	}
+	} else {}
 	}
 
 	if mode == .encode_fragment {
@@ -118,6 +119,7 @@ fn should_escape(c byte, mode EncodingMode) bool {
 			`!`, `(`, `)`, `*`{
 				return false
 			}
+			else {}
 		}
 	}
 
@@ -184,7 +186,7 @@ fn unescape(s_ string, mode EncodingMode) ?string {
 					// That is, you can use escaping in the zone identifier but not
 					// to introduce bytes you couldn't just write directly.
 					// But Windows puts spaces here! Yay.
-					v := byte(unhex(s[i+1])<<byte(4) | unhex(s[i+2]))
+					v := (unhex(s[i+1])<<byte(4) | unhex(s[i+2]))
 					if s[i..i+3] != '%25' && v != ` ` && should_escape(v, .encode_host) {
 						error(error_msg(err_msg_escape, s[i..i+3]))
 					}
@@ -212,7 +214,7 @@ fn unescape(s_ string, mode EncodingMode) ?string {
 		x := s[i]
 		match x {
 			`%` {
-				t.write( byte(unhex(s[i+1])<<byte(4) | unhex(s[i+2])).str() )
+				t.write((unhex(s[i+1])<<byte(4) | unhex(s[i+2])).str() )
 				i += 2
 			}
 			`+` {