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How to handle multiple heterogeneous inputs with Logstash?
...d cut down on the extra formatting within the config file a bit. Example: gist.github.com/fairchild/3030472 Per documentation: Add a 'type' field to all events handled by this input. Types are used mainly for filter activation. The type is stored as part of the event itself, so you can also use t...
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...
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...
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
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【转】用App Inventor 2实现电子围栏功能 - App应用开发 - 清泛IT社区，为创新赋能！
...图的边界，值是一个包含了西北和东南坐标的嵌套列表，格式为((北西)(南东))CenterFromString地图中心Set the initial center coordinate of the map. The value is specified as a comma-separated pair of decimal latitude and longitude coordinates, for example, 42.359144, -71....
Is there a max array length limit in C++?
...For example, a machine may have a word size of 16 bits but an addressing register of 32 bits. A chunk of memory is limited in size by the parameter passed to new or malloc. A chunk of memory larger than an array can be accessed via pointer.
– Thomas Matthews
...
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...
[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...
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
...