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SQL Server insert if not exists best practice
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answered Mar 13 '11 at 9:21
gbngbn
382k7272 gold badges532532 silver badges629629 bronze badges
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技术人员如何创业《一》—— 产品及想法 - 资讯 - 清泛网 - 专注C/C++及内核技术
...构思。
2、好的合伙人。三板斧，管理、销售、技术。
3、构建强大执行力的团队。
产品及想法：
什么是好的产品？一个朋友之前问到，这个问题要系统的回答还真有点不好说。看一下比较理论的解释，产品指一个能够满足...
List all sequences in a Postgres db 8.1 with SQL
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83
Note, that starting from PostgreSQL 8.4 you can get all information about sequences used in the ...
How do I check OS with a preprocessor directive?
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307
The Predefined Macros for OS site has a very complete list of checks. Here are a few of them, ...
How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
...ly match at that position or earlier. For example:
std::string test = "0123123";
size_t match1 = test.rfind("123"); // returns 4 (rightmost match)
size_t match2 = test.rfind("123", 2); // returns 1 (skipped over later match)
size_t match3 = test.rfind("123", 0); // returns std::string::npos (i.e...
How to fix .pch file missing on build?
...Put #include "stdafx.h" at the very top of all your source files.
Lucky 13. Cross your fingers and hit Build.
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Makefiles with source files in different directories
...ng:
all:
+$(MAKE) -C part1
+$(MAKE) -C part2
+$(MAKE) -C part3
Since each line in a make target is run in its own shell, there is no need to worry about traversing back up the directory tree or to other directories.
I suggest taking a look at the GNU make manual section 5.7; it is v...
Default value to a parameter while passing by reference in C++
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3
boost::array to the rescue void f(int &x = boost::array<int,1>()[0]) { .. } :)
– Johannes Schaub - litb
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How can I search sub-folders using glob.glob module?
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In Python 3.5 and newer use the new recursive **/ functionality:
configfiles = glob.glob('C:/Users/sam/Desktop/file1/**/*.txt', recursive=True)
When recursive is set, ** followed by a path separator matches 0 or more subdirectories....
Generating all permutations of a given string
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Eric Leschinski
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answered Nov 21 '10 at 20:59
SuperJuliettaSuperJulietta
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