low-level

What is the difference between scripting and coding? I've done both, I can recognize both, but it seems in reality, the definitions are sketchy. First of all, am I right in assuming if you are "coding", your "code" must (be able to) compile into some system's machine or assembly, be it x86 assembly, windows assembly (like MASM), micro-controller assembly, etc. ? Am I also right to assume scripting doesn't ever compile, it's text is just run through a processing program like 'Microsoft Windows Based Script Host' (VB-Script parser)? I get some of the qualities of scripts and code, but on their

Let's assume that 2 cores are trying to write different values to the same RAM address (1 byte), at the same moment of time (plus-minus eta), and without using any interlocked instructions or memory barriers. What happens in this case and what value will be written to the main RAM? The first one wins? The last one wins? Undetermined behavior? x86 (like every other mainstream SMP CPU architecture) has coherent data caches . It's impossible for two difference caches (e.g. L1D of 2 different cores) to hold conflicting data for the same cache line. The hardware imposes an order (by some

What win32 calls can be used to detect key press events globally (not just for 1 window, I'd like to get a message EVERY time a key is pressed), from a windows service? Brian R. Bondy You want to use Win32 Hooks. In particular a keyboard hook. You can read more about it here The type of hook you want is WH_KEYBOARD and you can set it via the Win32 API SetWindowsHookEx. Basically windows will call a function in a dll that you create everytime a key is pressed in any application system wide. The hook will call your function which will have this interface: LRESULT CALLBACK KeyboardProc( int code,

I found this keyboard hook code, which I'm trying to slightly modify for my purposes: http://blogs.msdn.com/toub/archive/2006/05/03/589423.aspx As an overview, I want to have the user press a key, say 'E', and have the keyboard return a different character, 'Z', to whatever app is in focus. The relevant method I changed now looks like: private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam) { if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN) { //The truely typed character: int vkCode = Marshal.ReadInt32(lParam); Console.WriteLine((Keys)vkCode); KBDLLHOOKSTRUCT replacementKey

While reading this: http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith64BitsDiv I came to the phrase: The last step, which involves modulus division by 2^10 - 1, has the effect of merging together each set of 10 bits (from positions 0-9, 10-19, 20-29, ...) in the 64-bit value. (it is about reversing the bits in a number)... so I did some calculations: reverted = (input * 0x0202020202ULL & 0x010884422010ULL) % 1023; b = 74 : 01001010 b * 0x0202020202 : 1000000010000000100000001000000010 = 9494949494 :01001010010010100100101001001010010010100 & 10884422010

I am trying to simulate mouse click on iphone simulator from macos App for that I am using CGEvents . the process id is 33554 for iPhone simulator let point = CGPoint(x: 500 , y:300) let eventMouseDown = CGEvent(mouseEventSource: nil, mouseType: .leftMouseDown, mouseCursorPosition: point, mouseButton: .left) let eventMouseUp = CGEvent(mouseEventSource: nil, mouseType: .leftMouseUp, mouseCursorPosition: point, mouseButton: .left) eventMouseDown?.postToPid(33554) eventMouseUp?.postToPid(33554) I have also noticed that It simulates mouse click when ios simulator window is focused and only works