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C# Equivalent of SQL Server DataTypes
...te[]
image None None
varchar None None
char None None
nvarchar(1), nchar(1) SqlChars, SqlString Char, String, Char[]
nvarchar ...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...关联容器hash_set、hase_multiset、hash_map和hash_multimap。
vector<char> 作为string的替代。(见第13条)
vector作为标准关联容器的替代。(见第23条)
几种标准的非STL容器，包括数组、bitset、valarray、stack、queue和priority_queue。
你是否关心容器...
what is Segmentation fault (core dumped)? [duplicate]
...ith your arguments of main. The main function should be int main(int argc, char *argv[]), and you should check that argc is at least 2 before accessing argv[1].
Also, since you're passing in a float to printf (which, by the way, gets converted to a double when passing to printf), you should use the...
How do you determine the size of a file in C?
...include <sys/stat.h>
#include <sys/types.h>
off_t fsize(const char *filename) {
struct stat st;
if (stat(filename, &st) == 0)
return st.st_size;
return -1;
}
Changes:
Made the filename argument a const char.
Corrected the struct stat definition, which was...
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
...ith GCC gives the following breakdown:
44.23% in std::basic_streambuf<char>::xsputn(char const*, int)
34.62% in std::ostream::write(char const*, int)
12.50% in main
6.73% in std::ostream::sentry::sentry(std::ostream&)
0.96% in std::string::_M_replace_safe(unsigned int, unsigned int, char...
Best way to repeat a character in C#
...turns
"aa"
from...
Is there a built-in function to repeat string or char in .net?
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Which characters need to be escaped when using Bash?
Is there any comprehensive list of characters that need to be escaped in Bash? Can it be checked just with sed ?
7 Answers...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
...e a SQL_Latin1_General_CI_AS. Rather, there is a Latin1_General_CI_AS. See SELECT * FROM fn_helpcollations() where name IN ('SQL_Latin1_General_CP1_CI_AS','Latin1_General_CI_AS','SQL_Latin1_General_CI_AS');. There are subtle differences regarding sorting and comparison as between the two collations....
Unsigned keyword in C++
...ng -> signed long
signed long
unsigned long
Be careful of char:
char (is signed or unsigned depending on the implmentation)
signed char
unsigned char
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Removing trailing newline character from fgets() input
...
The slightly ugly way:
char *pos;
if ((pos=strchr(Name, '\n')) != NULL)
*pos = '\0';
else
/* input too long for buffer, flag error */
The slightly strange way:
strtok(Name, "\n");
Note that the strtok function doesn't work as expected ...