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GCC -fPIC option
...for Code Generation Conventions , but could not understand what "Generate position-independent code (PIC)" does. Please give an example to explain me what does it mean.
...
Why is NaN not equal to NaN? [duplicate]
...nction; one of the examples given in the linked document is finding the zeros() of a function f(). It is entirely possible that in the process of probing the function with guess values that you will probe one where the function f() yields no sensible result. This allows zeros() to see the NaN and co...
select * vs select column
If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory?
...
How can I access my localhost from my Android device?
...twork), then use your desktop IP address assigned by the router (not localhost and not 127.0.0.1).
To find out the IP address of your desktop:
type into the command line ipconfig (Windows) or ifconfig (Unix)
on Linux the one-liner ifconfig | grep "inet " | grep -v 127.0.0.1 will yield only t...
What does CultureInfo.InvariantCulture mean?
...nstalledUICulture so the default CultureInfo is depending on the executing OS's settings. This is why you should always make sure the culture info fits your intention (see Martin's answer for a good guideline).
CultureInfo.InvariantCulture Example
CultureInfo.InvariantCulture on StackOverflow
Cult...
TCP vs UDP on video stream
...pliances are not designed with TCP streaming in mind. If you use TCP, the OS must buffer the unacknowledged segments for every client. This is undesirable, particularly in the case of live events; presumably your list of simultaneous clients is long due to the singularity of the event. Pre-record...
When is it appropriate to use UDP instead of TCP? [closed]
...red "reliable", whereas UDP doesn't guarantee anything and packets can be lost. What would be the advantage of transmitting data using UDP in an application rather than over a TCP stream? In what kind of situations would UDP be the better choice, and why?
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How to generate keyboard events in Python?
... = 0x0004
KEYEVENTF_SCANCODE = 0x0008
MAPVK_VK_TO_VSC = 0
# msdn.microsoft.com/en-us/library/dd375731
VK_TAB = 0x09
VK_MENU = 0x12
# C struct definitions
wintypes.ULONG_PTR = wintypes.WPARAM
class MOUSEINPUT(ctypes.Structure):
_fields_ = (("dx", wintypes.LONG),
...
How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII
... no bytes above 0x7F, then it's ASCII. (Or a 7-bit ISO646 encoding, but those are very obsolete.)
UTF-8
If your data validates as UTF-8, then you can safely assume it is UTF-8. Due to UTF-8's strict validation rules, false positives are extremely rare.
ISO-8859-1 vs. windows-1252
The only diff...
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...也是沈从文笔下诗意的《边城》。凤凰因有了沈从文而以一个无比淳朴的、自由的、满溢了生命力的历史名城出现在世人面前，吸引无数人去探寻。如今，凤凰除了沱江、吊脚楼和“翠翠”一般美丽的苗族少女，更多了咖啡和酒...