usecache: fix duplicates; doc: minor fixes

Author: medvednikov

doc/docs.md

@@ -5475,7 +5475,7 @@ println('number of all customers: ${nr_customers}')
 
 // V's syntax can be used to build queries:
 uk_customers := sql db {
-	select from Customer where country == 'uk' && nr_orders > 0
+	select from Customer where country == 'uk' && nr_orders > 0 order by id desc limit 10
 }!
 println('We found a total of ${uk_customers.len} customers matching the query.')
 for c in uk_customers {

examples/tetris/README.md

@@ -1,12 +1,8 @@
 <img src='https://raw.githubusercontent.com/vlang/v/master/examples/tetris/screenshot.png' width=300>
 
-### Dependencies (Ubuntu)
+### Dependencies (Ubuntu/Debian)
 ```sh
-sudo apt install libx11-dev
-sudo apt install libxi-dev
-sudo apt install libxcursor-dev
-sudo apt install libxrandr-dev
-sudo apt install libgl-dev
+sudo apt install -y libx11-dev libxi-dev libxcursor-dev libxrandr-dev libgl-dev
 ```
 
 ## Compiling to JS

vlib/orm/README.md

@@ -32,7 +32,7 @@ struct Foo {
 - `[sql: 'name']` sets a custom column name for the field
 - `[sql_type: 'SQL TYPE']` explicitly sets the type in SQL
 - `[default: 'raw_sql']` inserts `raw_sql` verbatim in a "DEFAULT" clause when
-  creating a new table, allowing for SQL functions like `CURRENT_TIME`. For raw strings, 
+  creating a new table, allowing for SQL functions like `CURRENT_TIME`. For raw strings,
   surround `raw_sql` with backticks (\`).
 
 - `[fkey: 'parent_id']` sets foreign key for an field which holds an array
@@ -166,7 +166,7 @@ result := sql db {
 
 ```v ignore
 result := sql db {
-    select from Foo where id > 1 order by id
+    select from Foo where id > 1 order by id desc
 }!
 ```
 
@@ -198,8 +198,8 @@ sql db {
 ### time.Time Fields
 
 It's definitely useful to cast a field as `time.Time` so you can use V's built-in time functions;
-however, this is handled a bit differently than expected in the ORM. `time.Time` fields are 
-created as integer columns in the database. Because of this, the usual time functions 
+however, this is handled a bit differently than expected in the ORM. `time.Time` fields are
+created as integer columns in the database. Because of this, the usual time functions
 (`current_timestamp`, `NOW()`, etc) in SQL do not work as defaults.
 
 ## Example

vlib/v/gen/c/cgen.v

@@ -1224,23 +1224,26 @@ pub fn (mut g Gen) write_typeof_functions() {
 				g.writeln('\tif (sidx == _${sym.cname}_${sub_sym.cname}_index) return "${util.strip_main_name(sub_sym.name)}";')
 			}
 			g.writeln2('\treturn "unknown ${util.strip_main_name(sym.name)}";', '}')
-			g.definitions.writeln('u32 v_typeof_interface_idx_${sym.cname}(u32 sidx);')
-			g.writeln2('', 'u32 v_typeof_interface_idx_${sym.cname}(u32 sidx) {')
-			if g.pref.parallel_cc {
-				g.extern_out.writeln('extern u32 v_typeof_interface_idx_${sym.cname}(u32 sidx);')
-			}
-			for t in inter_info.types {
-				sub_sym := g.table.sym(ast.mktyp(t))
-				if sub_sym.info is ast.Struct && sub_sym.info.is_unresolved_generic() {
-					continue
-				}
-				if g.pref.skip_unused && sub_sym.kind == .struct
-					&& sub_sym.idx !in g.table.used_features.used_syms {
-					continue
+			// Avoid duplicate symbol '_v_typeof_interface_idx_IError' when using -usecache
+			if g.pref.build_mode != .build_module {
+				g.definitions.writeln('u32 v_typeof_interface_idx_${sym.cname}(u32 sidx);')
+				g.writeln2('', 'u32 v_typeof_interface_idx_${sym.cname}(u32 sidx) {')
+				if g.pref.parallel_cc {
+					g.extern_out.writeln('extern u32 v_typeof_interface_idx_${sym.cname}(u32 sidx);')
+				}
+				for t in inter_info.types {
+					sub_sym := g.table.sym(ast.mktyp(t))
+					if sub_sym.info is ast.Struct && sub_sym.info.is_unresolved_generic() {
+						continue
+					}
+					if g.pref.skip_unused && sub_sym.kind == .struct
+						&& sub_sym.idx !in g.table.used_features.used_syms {
+						continue
+					}
+					g.writeln('\tif (sidx == _${sym.cname}_${sub_sym.cname}_index) return ${u32(t.set_nr_muls(0))};')
 				}
-				g.writeln('\tif (sidx == _${sym.cname}_${sub_sym.cname}_index) return ${u32(t.set_nr_muls(0))};')
+				g.writeln2('\treturn ${u32(ityp)};', '}')
 			}
-			g.writeln2('\treturn ${u32(ityp)};', '}')
 		}
 	}
 	g.writeln2('// << typeof() support for sum types', '')

vlib/veb/auth/auth.v

@@ -25,6 +25,7 @@ pub:
 }
 
 pub fn new[T](db T) Auth[T] {
+	println('creating table Token')
 	set_rand_crypto_safe_seed()
 	sql db {
 		create table Token