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Oracle编译器警告
Compiler Warnings 编译器警告 Oracle 10g allows you to enable compile-time warnings that are useful to identify potential run-time problems in your programs. These warnings are not serious enough to rais...
分类:数据库   时间:2015-06-06 23:35:07    阅读次数:179
apache 配置虚拟主机 url重写功能
# The ServerName directive sets the request scheme, hostname and port that         # the server uses to identify itself. This is used when creating         # redirection URLs. In the context o...
分类:Web程序   时间:2015-06-01 09:42:25    阅读次数:147
HackerRank - "Identify Smith Numbers"
I guess the punch line of this one is Sieving for primes.#include #include #include #include #include #include #include #include using namespace std;v...
分类:其他好文   时间:2015-05-28 02:01:14    阅读次数:414
Identify Smith Numbers
Link: https://www.hackerrank.com/challenges/identify-smith-numbers 1 def sum_digits(n): 2 return sum(int(x) for x in str(n)) 3 4 def prime_facto...
分类:其他好文   时间:2015-05-17 10:44:42    阅读次数:112
iOS 获取设备的唯一性
一:英文原文:In iOS 7 and later, if you ask for the MAC address of an iOS device, the system returns the value 02:00:00:00:00:00. If you need to identify th...
分类:移动开发   时间:2015-05-12 20:48:57    阅读次数:170
Top 10 Java Debugging Tips with Eclipse
In this tutorial we will see about debugging java applications using Eclipse. Debugging helps us to identify and fix defects in the application. We wi...
分类:编程语言   时间:2015-05-02 11:04:32    阅读次数:270
[LeetCode] Repeated DNA Sequences
Repeated DNA Sequences   All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to identify repeated s...
分类:其他好文   时间:2015-04-10 15:35:15    阅读次数:242
【C/C++】RTTI
什么是RTTI RTTI(Run Time Type Identify)运行时类型检查。就是在运行时知道对象的类型。 实现RTTI的方式 (1)typeid函数 typeid(obj).name()返回对象的类型名称。 (2)dynamic_cast操作符 dynamic_cast可以知道是否可以安全地将对象的地址赋给特定类型的指针。如果转换失败,返回空指针(nullptr)。 注意: RTTI只适用于包含虚函数的类。 RTTI实现原理就是根据对象所指向的虚函数表知道对象的类型。 在包含虚函数...
分类:编程语言   时间:2015-03-30 09:40:15    阅读次数:161
【LeetCode】Repeated DNA Sequences 解题报告
【题目】 All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to identify repeated sequences within the D...
分类:其他好文   时间:2015-03-20 12:56:36    阅读次数:149
oracle表空间恢复
如果误删除了一个表空间中test的数据文件test.dbf,然后下次重新启动数据库的时候发数据库不能打开了(open),老是报错:SQL>alterdatabaseopen;alterdatabaseopen*ERRORatline1:ORA-01157:cannotidentify/lockdatafile6-seeDBWRtracefileORA-01110:datafile6:‘/u01/app/or..
分类:数据库   时间:2015-03-18 18:20:46    阅读次数:162
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