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efficient way to implement paging
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edited Feb 9 '14 at 12:10
Behrang Saeedzadeh
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What is the difference between exit(0) and exit(1) in C?
...e in many implementations though.
Reference:
C99 Standard: 7.20.4.3 The exit function
Para 5
Finally, control is returned to the host environment. If the value of status is zero or
EXIT_SUCCESS, an implementation-defined form of the status successful termination is
returned. ...
What is an unsigned char?
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edited Oct 24 '14 at 3:42
Deduplicator
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How to recover MySQL database from .myd, .myi, .frm files
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174
If these are MyISAM tables, then plopping the .FRM, .MYD, and .MYI files into a database directo...
Programmatically find the number of cores on a machine
... = sysinfo.dwNumberOfProcessors;
Linux, Solaris, AIX and Mac OS X >=10.4 (i.e. Tiger onwards)
int numCPU = sysconf(_SC_NPROCESSORS_ONLN);
FreeBSD, MacOS X, NetBSD, OpenBSD, etc.
int mib[4];
int numCPU;
std::size_t len = sizeof(numCPU);
/* set the mib for hw.ncpu */
mib[0] = CTL_HW;
mib[1] =...
家政O2O百家争鸣后的卡位战：烧钱补贴并非良药 - 资讯 - 清泛网移动版 - 专...
...关张了。有媒体曝出导致Homejoy关闭的“决定性因素”是4起关于员工身份问题的诉讼。但不少业内人士表示，员工的身份问题或许只是压倒骆驼的最后一根稻草。实际上，盈利难匹配扩张速度也是Homejoy暴露出的一大问题。虽然Hom...
Getting attributes of a class
...lpful.
EDIT:
For example,
class MyClass(object):
a = '12'
b = '34'
def myfunc(self):
return self.a
>>> import inspect
>>> inspect.getmembers(MyClass, lambda a:not(inspect.isroutine(a)))
[('__class__', type),
('__dict__',
<dictproxy {'__dict__': <att...
How do I convert an NSString value to NSData?
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1422
NSString* str = @"teststring";
NSData* data = [str dataUsingEncoding:NSUTF8StringEncoding];
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How to round up to the nearest 10 (or 100 or X)?
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64
If you just want to round up to the nearest power of 10, then just define:
roundUp <- functi...
What are important languages to learn to understand different approaches and concepts? [closed]
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24 Answers
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