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snprintf and Visual Studio 2010
...p:
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf c99_snprintf
#define vsnprintf c99_vsnprintf
__inline int c99_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
{
int count = -1;
if (size != 0)
count = _vsnprintf_s(outBuf, size, _TRUNCATE...
Is bool a native C type?
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bool exists in the current C - C99, but not in C89/90.
In C99 the native type is actually called _Bool, while bool is a standard library macro defined in stdbool.h (which expectedly resolves to _Bool). Objects of type _Bool hold either 0 or 1, while true a...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...直接上网！
1.用setup配网络参数:
2. 安装squid
[root@gjp99 ~]# mkdir /mnt/cdrom
[root@gjp99 ~]# mount /dev/cdrom /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@gjp99 Server]# rpm -ql squid |less
查看注释语句：
/etc/httpd/conf.d...
How to make a variadic macro (variable number of arguments)
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C99 way, also supported by VC++ compiler.
#define FOO(fmt, ...) printf(fmt, ##__VA_ARGS__)
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Which is faster : if (bool) or if(int)?
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99
Makes sense to me. Your compiler apparently defines a bool as an 8-bit value, and your system A...
Is “inline” without “static” or “extern” ever useful in C99?
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NemoNemo
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How to initialize a struct in accordance with C programming language standards
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In (ANSI) C99, you can use a designated initializer to initialize a structure:
MY_TYPE a = { .flag = true, .value = 123, .stuff = 0.456 };
Edit: Other members are initialized as zero: "Omitted field members are implicitly initialize...
What are inline namespaces for?
...r> might have looked like this:
namespace std {
#if __cplusplus < 1997L // pre-standard C++
inline
#endif
namespace pre_cxx_1997 {
template <class T> __vector_impl; // implementation class
template <class T> // e.g. w/o allocator argument
class ve...
How to avoid variable substitution in Oracle SQL Developer with 'trinidad & tobago'
...d Tobago' where country = 'trinidad & '|| 'tobago';
create table table99(col1 varchar(40));
insert into table99 values('Trinidad &' || ' Tobago');
insert into table99 values('Trinidad &' || ' Tobago');
insert into table99 values('Trinidad &' || ' Tobago');
insert into table99 val...
CDN（内容分发网络）技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。DNS方式用户位置判断准确率大于85%，HTTP方式准确率为99%以上；一般情况下，各Cache服务器群的用户访问流入数据量与Cache服务器到原始网站取内容的数据量之比在2：1到3：1之间，即分担50%到70%的到原始网站重复访问数据量（主...