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What is an existential type?
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@Kannan_Goundan, I'd like to know what makes you say Java wildcards are a very limited version of this. Do you know you could implement your first runAllCompilers example function in pure Java (with a helper function to retrieve (gi...
Google Maps Android API v2 - Interactive InfoWindow (like in original android google maps)
... switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN: startPress(); break;
// We need to delay releasing of the view a little so it shows the pressed state on the screen
case MotionEvent.ACTION_UP: handler.postDelayed(confirmClickRunnable, 150); b...
Benefits of prototypal inheritance over classical?
... you to copy the properties of an arbitrary number of objects. For example _.extend does just this.
Of course many programmers don't consider this to be true inheritance because instanceof and isPrototypeOf say otherwise. However this can be easily remedied by storing an array of prototypes on ever...
What are the differences between virtual memory and physical memory?
...s you from the realm of caches and RAM to that of disk, which is slower by orders of magnitudes. Painfully, irrevocably, transcendentally slower. It is an I/O operation, which means it is not CPU bound (it is rather the exact opposite), which means it does not need to occupy RAM right now. However, ...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...etwork is unreachable
WSAETIMEDOUT (10060) Connection timed out
WSAHOST_NOT_FOUND (11001) Host not found
WSASYSNOTREADY (10091) Network sub-system is unavailable
WSANOTINITIALISED (10093) WSAStartup() not performed
WSANO_DATA (11004) Valid name, no data of that type
WSANO_RECOVERY (11003...
Any reason why scala does not explicitly support dependent types?
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@ashy_32bit if you can get access to "Advanced Topics in Types and Programming Languages" by Benjamin Pierce, there is a chapter in that which gives a reasonable introduction to dependent types. You could also read some papers by ...
What are the undocumented features and limitations of the Windows FINDSTR command?
... regex search for any line that contains both "hello" and "goodbye" in any order
/i /r /c:"hello.*goodbye" /c:"goodbye.*hello"
-i -r -c:"hello.*goodbye" /c:"goodbye.*hello"
/irc:"hello.*goodbye" /c:"goodbye.*hello"
Options may also be quoted. So /i, -i, "/i" and "-i" are all equivalent. Likewis...
mmap() vs. reading blocks
... for a long time, or if you know you can share it with other processes (MAP_SHARED isn't very interesting if there is no actual sharing). Read files normally if you access data sequentially or discard it after reading. And if either method makes your program less complex, do that. For many real w...
JavaScript + Unicode regexes
...A59\uABF0-\uABF9\uFF10-\uFF19]
\p{P} (Punctuation):
[!-#%-*,-/\:;?@\[-\]_\{\}\u00A1\u00A7\u00AB\u00B6\u00B7\u00BB\u00BF\u037E\u0387\u055A-\u055F\u0589\u058A\u05BE\u05C0\u05C3\u05C6\u05F3\u05F4\u0609\u060A\u060C\u060D\u061B\u061E\u061F\u066A-\u066D\u06D4\u0700-\u070D\u07F7-\u07F9\u0830-\u083E\u085...
What is a correct mime type for docx, pptx etc?
...mage/vnd.fst", "fvt": "video/vnd.fvt", "fbs": "image/vnd.fastbidsheet", "fe_launch": "application/vnd.denovo.fcselayout-link", "f4v": "video/x-f4v", "flv": "video/x-flv", "fpx": "image/vnd.fpx", "npx": "image/vnd.net-fpx", "flx": "text/vnd.fmi.flexstor", "fli": "video/x-fli", "ftc": "application/vnd...