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总结const_cast、static_cast、dynamic_cast、reinterpret_cast - C/C++ - ...
...：1)const_cast：移除const属性。2)static_cast：强转，与C类型转换类似，不检查类型来保证转换安全。也可用于指针的父类到子类的...简单总结：
1) const_cast：移除const属性。
2) static_cast：强转，与C类型转换类似，不检查类型来保证...
OpenLayers vs Google Maps? [closed]
...nd not have to rewrite your entire code. Google, Yahoo, Microsoft, WMS, ArcGIS Server, MapServer, etc. are all supported out of the box.
Vector Support: Better support for points, polylines, and polygons.
Control: You have the ability to add any new features that you may need. I've personally writte...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...创建一些特殊的集。列表如下：
隐式成员列表格式
示例
所产生集成员
1..n
1..5
1,2,3,4,5
StringM..StringN
Car2..car14
Car2,Car3,Car4,…,Car14
DayM..DayN
Mon..Fri
...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ongoDB)。
注：NoSQL的实现在mahout-integration-0.8.jar中。
数据格式支持2种：
GenericDataModel: 用户ID，物品ID，用户对物品的打分(UserID,ItemID,PreferenceValue)
GenericBooleanPrefDataModel: 用户ID，物品ID (UserID,ItemID)，这种方式表达用户是否浏览...
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
[精华] VC中BSTR、Char和CString类型的转换char*转换成CString，CString转换成char*，BSTR转换成char*，char*转换成BSTR，CString转换成BSTR，BSTR转换成CString，ANSI、Unicode和宽字符之间的转换...1、char*转换成CString
若将char*转换成CString，除了直接...
Which data type for latitude and longitude?
I am newbie to PostgreSQL and PostGIS. I want to store latitude and longitude values in PostgreSQL 9.1.1 database table. I will calculate distance between two points, find nearer points by using this location values.
...
Draw radius around a point in Google map
... maps doesn't give it to you out of the box (they want to stay as close to GIS values as is pragmatically possible). They only give you GPolygon which they want you to use to approximate a circle. However, this guy did it using vml for IE and svg for other browsers (see "SCALED CIRCLES" section).
N...
Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术
...者注:日期查询协议,这种时间传输协议不指定固定的传输格式，只要求按照ASCII标准发送数据。)
using boost::asio::ip::tcp;
int main(int argc, char* argv[])
{
try
{
if (argc != 2)
{
std::cerr << "Usage: client <host>" << std...
error C2664: “std::list::list(const std::allocator &)”: 不能将参数 1...
...t::list(const std::allocator &)”: 不能将参数 1 从 “std::vector”转换为“const std::allocator &”错误日志：error C2664: std::list<_Ty>::list(const std::allocator<_Ty> &): 不能将参数 1 从std::vector<_Ty>转换为const std::...错误日志：
error C2664: “std::list<_Ty>...
How to calculate the bounding box for a given lat/lng location?
...ndard method, which can be used in other parts of application, not for the gis exact...
– user2402179
Oct 4 '13 at 12:35
...