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XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
... // Database test code from the sql.js project
var test = sqldb.exec("SELECT * FROM Genre");
document.getElementById("test").textContent = JSON.stringify(test);
</script>
I imagine it would be trivial to modify this to read JSON, maybe even XML; I'll leave that as an exercise for th...
Install autoreconf on OS X v10.7 (Lion)?
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By downloading the .pkg file from MacPorts and installing it, it does the trick for me.
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Intellij IDEA. Hide .iml files
I use Intellij IDEA 12 and I want to hide .iml files in Project view. How I can achieve this?
8 Answers
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mmap() vs. reading blocks
...d I came across a nice post (link) on the Linux kernel mailing list. It's from 2000, so there have been many improvements to IO and virtual memory in the kernel since then, but it nicely explains the reason why mmap or read might be faster or slower.
A call to mmap has more overhead than read (ju...
What is the “FS”/“GS” register intended for?
...be independent and part of a persistent virtual store. The idea was taken from the 1966 Multics operating system, that treated files as simply addressable memory segments. No BS "Open file, write record, close file", just "Store this value into that virtual data segment" with dirty page flushing.
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What does multicore assembly language look like?
...thread (usually thread 0 in core 0 in processor 0) starts up fetching code from address 0xfffffff0. All the other threads start up in a special sleep state called Wait-for-SIPI. As part of its initialization, the primary thread sends a special inter-processor-interrupt (IPI) over the APIC called a...
How to fix java.net.SocketException: Broken pipe?
...nt or the server) closing the connection while your code is either reading from or writing to the connection.
This is a very common exception in client/server applications that receive traffic from clients or servers outside of the application control. For example, the client is a browser. If the b...
Mac OS X 入门操作常见问题集锦（持续更新） - 更多技术 - 清泛网 - 专注C/...
Mac OS X 入门操作常见问题集锦（持续更新）如何截图：shift + command + 3 截整屏shift + command + 4 截窗口（默认png，并保存到桌面）shift + command + Ctrl + 4 如何截图：
shift + command + 3 截整屏
shift + command + 4 截窗口（默认png，并保存...
What is an application binary interface (ABI)?
... re-compiled or run inside some type of emulation layer that can translate from one binary format to another.
IIRC, Windows currently uses the Portable Executable (or, PE) format. There are links in the "external links" section of that Wikipedia page with more information about the PE format.
Als...
How is Node.js inherently faster when it still relies on Threads internally?
... standard procedural way, the code might look like this:
result = query( "select smurfs from some_mushroom" );
// twiddle fingers
go_do_something_with_result( result );
If the request coming in caused you to create a new thread that ran the above code, you'll have a thread sitting there, doing no...