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Static Vs. Dynamic Binding in Java
...ass test1 {
public static void main(String args[]) {
parent pc = new child();
pc.start();
}
}
class parent {
static public void start() {
System.out.println("Inside start method of parent");
}
}
class child extends parent {
static public void start...
StackOverflow程序员推荐：每个程序员都应读的30本书 - 杂谈 - 清泛网 - 专...
...技能的过程，而其他人可能要花费数年。
去年对我影响最大的一本书是《大教堂与市集》，该书教会我很有关开源开发过程如何运作，和如何处理我代码中的Bug。 – John Channing
15. 《编程珠玑》
推荐数：282
尽管我不得不...
Is “IF” expensive?
...omething typically called the instruction pointer (IP) or program counter (PC); these terms are synonymous, but different terms are used with different architectures. For most instructions, the PC of the next instruction is just the current PC plus the length of the current instruction. For most R...
How to make the hardware beep sound in Mac OS X 10.6
...unctionality you're thinking of is an artifact of very old (pre-1990s) IBM PC-compatible hardware. Before most computers had sound cards, most machines had a small speaker or piezo buzzer connected to one of the channels of a timer chip. This could be used to generate simple tones or beeps. Even aft...
What is the advantage of GCC's __builtin_expect in if else statements?
...0 00 00 callq b <main+0xb>
7: R_X86_64_PC32 time-0x4
b: 48 85 c0 test %rax,%rax
e: 75 0a jne 1a <main+0x1a>
10: bf 00 00 00 00 mov $0x0,%edi
11: R_X86_64_3...
“Unresolved inclusion” error with Eclipse CDT for C standard library headers
...at seems to work for me.
include paths for c:
D:\dev\cygwin\lib\gcc\i686-pc-cygwin\3.4.4\include
D:\dev\cygwin\usr\include
include paths for c++:
D:\dev\cygwin\lib\gcc\i686-pc-cygwin\3.4.4\include
D:\dev\cygwin\lib\gcc\i686-pc-cygwin\3.4.4\include\c++
D:\dev\cygwin\usr\include
this gets me a ...
What is the list of possible values for navigator.platform as of today? [closed]
...imulator shipped with Xcode
Macintosh
MacIntel: Intel processor (2005)
MacPPC: PowerPC processor
Mac68K: 68000 processor
Pike v7.6 release 92: Opera Mini 5 on any iPhone (2009)
Pike v7.8 release 517: Opera Mini 7 on any iPhone (2012)
BlackBerry
BlackBerry (2003)
FreeBSD
FreeBSD
FreeBSD i386: x86...
What are “connecting characters” in Java identifiers?
...s used to connect words.
http://www.fileformat.info/info/unicode/category/Pc/list.htm
U+005F _ LOW LINE
U+203F ‿ UNDERTIE
U+2040 ⁀ CHARACTER TIE
U+2054 ⁔ INVERTED UNDERTIE
U+FE33 ︳ PRESENTATION FORM FOR VERTICAL LOW LINE
U+FE34 ︴ PRESENTATION FORM FOR VERTICAL WAVY LOW LINE
U+FE4D ﹍ DA...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... -mr nnn
对nnn值设置内在限制，-mf选项限制分配给nnn的最大块数目；-mr选项限制记录的最大数目。这两个功能是Bell实验室版awk的扩展功能，在标准awk中不适用。
-W compact or --compat, -W traditional or --traditional
在兼容模...
Efficiently convert rows to columns in sql server
...sic syntax would be:
select fn.value as FirstName,
a.value as Amount,
pc.value as PostalCode,
ln.value as LastName,
an.value as AccountNumber
from yourtable fn
left join yourtable a
on fn.somecol = a.somecol
and a.columnname = 'Amount'
left join yourtable pc
on fn.somecol = pc.somecol...