@@ -30,9 +30,10 @@ C and C++ minimal examples. Asserts used wherever possible. Cheatsheets, tutoria
     1.  [GDB](gdb/)
     1.  [cflow](cflow.md)
 1.  Media
-    1. [FFmpeg](ffmpeg/)
+    1.  [FFmpeg](ffmpeg/)
+    1.  [v4l2](v4l2/)
 1.  [Linting tools](linting-tools.md)
-    1. [Frama-C](frama-c/)
+    1.  [Frama-C](frama-c/)
 1.  [Boost](boost/)
 1.  [CMake](cmake.md)
 1.  [Flex and Bison](flex-bison/)
 
@@ -27,3 +27,9 @@ Google unit test framework: <http://code.google.com/p/googletest/>
 ### tokamak
 
 Rigid body physical engine.
+
+## IO
+
+Mouse, keyboard:
+
+- <http://stackoverflow.com/questions/2617359/cross-platform-keyboard-mouse-input-recommendation>
@@ -38,6 +38,7 @@
                 1.  [struct](struct.c)
                     1.  [struct operators](struct_operators.c)
                     1.  [struct designated initializer](struct_designated_initializer.c)
+                    1.  [Bitfield](bitfield.c)
                 1.  [union](union.c)
         1.  [Literals](literals.c)
             1.  [Compound struct literal](compound_struct_literal.c)
 
@@ -0,0 +1,50 @@
+/*
+# bitfield
+
+    Gives support for fields which contain a single bit in the language.
+*/
+
+#include "common.h"
+
+int main() {
+    struct S {
+        unsigned b1 : 1;
+        unsigned b2 : 2;
+        unsigned b3 : 3;
+
+        /* padding untill next int is added automatically because */
+        /* next data is not a bitfield and accesses is faster if it is aligned */
+
+            int i;
+
+        unsigned b4 : 1;
+
+        /* manually adds padding untill next field */
+        /* even if it is a bitfield */
+
+            unsigned : 0;
+
+        unsigned b5 : 1;
+    } s ;
+
+    assert(sizeof(struct S) == 16);
+
+    s.b1 = 1;
+    assert(s.b1 == 1);
+
+    /* WARN */
+    /* overflow */
+    /* truncate */
+    /*s.b1 = 2;*/
+
+    int i = 2;
+    s.b1 = i;
+    assert(s.b1 == 0);
+
+    /* Only takes lsb. */
+    i = 3;
+    s.b1 = i;
+    assert(s.b1 == 1);
+
+    return EXIT_SUCCESS;
+}
@@ -24,6 +24,9 @@ int main() {
         assert(0);
     }
 
+    if (1.1) {
+    }
+
     /* Can ommit braces for single statements. */
     {
         {
 
@@ -44,6 +44,25 @@ int main() {
         assert(s.f == 2.0);
     }
 
+    /*
+    Initialization with less members than the total.
+    http://stackoverflow.com/questions/11152160/initializing-a-struct-to-0
+
+    Fine: missing fields get the same value as they would have
+    if they were static storage duration objects, thus 0 for int.
+    */
+    {
+        struct S {int i; int j;};
+        struct S s0 = {1};
+        assert(s0.i == 1);
+        assert(s0.j == 0);
+
+        /* empty braces for initialization: GNU extension. */
+        {
+            /*struct S s0 = {};*/
+        }
+    }
+
     /* Define and initialize at the same time. */
     {
         struct S {int i; int j;} s0 = {0, 1}, s1 = {2, 3};
@@ -440,51 +459,5 @@ int main() {
         }
     }
 
-    /*
-    # bitfields
-
-        Gives support for fields which contain a single bit in the language.
-    */
-    {
-        struct S {
-            unsigned b1 : 1;
-            unsigned b2 : 2;
-            unsigned b3 : 3;
-
-            /* padding untill next int is added automatically because */
-            /* next data is not a bitfield and accesses is faster if it is aligned */
-
-                int i;
-
-            unsigned b4 : 1;
-
-            /* manually adds padding untill next field */
-            /* even if it is a bitfield */
-
-                unsigned : 0;
-
-            unsigned b5 : 1;
-        } s ;
-
-        assert(sizeof(struct S) == 16);
-
-        s.b1 = 1;
-        assert(s.b1 == 1);
-
-        /* WARN */
-        /* overflow */
-        /* truncate */
-        /*s.b1 = 2;*/
-
-        int i = 2;
-        s.b1 = i;
-        assert(s.b1 == 0);
-
-        /* Only takes lsb. */
-        i = 3;
-        s.b1 = i;
-        assert(s.b1 == 1);
-    }
-
     return EXIT_SUCCESS;
 }
@@ -36,3 +36,23 @@ CMake also comes with a test driver, `ctest`, which you can use as:
 
     cd build
     ctest .
+
+## Change install destination without recompile
+
+<http://stackoverflow.com/questions/13480846/how-to-modify-the-install-path-without-running-the-configure-script-cmake-again>
+
+Says:
+
+    make install DESTDIR=/opt/local
+
+## Uninstall
+
+Nope, not by default!
+
+<http://stackoverflow.com/questions/19921017/cleaning-cmake-installed-files>
+
+<https://cmake.org/Wiki/CMake_FAQ#Can_I_do_.22make_uninstall.22_with_CMake.3F>
+
+`install_manifest.txt` contains a list of installed files and seems to be generated by default under `build/` upon install, so you can just do:
+
+    sudo xargs rm <install_manifest.txt
@@ -37,6 +37,7 @@
             1. [Pure virtual](pure_virtual.cpp)
             1. [Pure virtual from constructor](pure_virtual_from_constructor.cpp)
             1. [Covariant return](covariant_return.cpp)
+            1. Virtual base class: TODO <http://stackoverflow.com/questions/21558/in-c-what-is-a-virtual-base-class>
         1.  [Inheriting constructor](inheriting_constructor.cpp)
         1.  [Inherit overload_hide](inherit_overload_hide.cpp)
     1.  [namespace](namespace.cpp)
@@ -46,6 +47,8 @@
     1.  [typecast](typecast.cpp)
     1.  [new](new.cpp)
     1.  [Preprocessor](preprocessor.cpp)
+    1.  using
+        using type alias. TODO http://en.cppreference.com/w/cpp/language/type_alias
 1.  [Standard library](standard_library.md)
     1.  [Headers](common.hpp)
     1.  [Containers](containers.md)
 
@@ -132,7 +132,7 @@ int main() {
     */
 
     /*
-    Get array length, find array length: <http://stackoverflow.com/questions/4108313/how-do-i-find-the-length-of-an-array>
+    Get array length, find array length: http://stackoverflow.com/questions/4108313/how-do-i-find-the-length-of-an-array
 
     Besides the C sizeof method which does not work for pointers and has lots of duplication, C++ offers:
     */
 
@@ -0,0 +1 @@
+sample-media/
Original file line number	Diff line number	Diff line change
`@@ -24,6 +24,9 @@ int main() {`
`24`	`24`	`assert(0);`
`25`	`25`	`}`
`26`	`26`
	`27`	`+ if (1.1) {`
	`28`	`+ }`
	`29`	`+`
`27`	`30`	`/* Can ommit braces for single statements. */`
`28`	`31`	`{`
`29`	`32`	`{`