博文

目前显示的是 六月, 2017的博文

Wijmo FlexGrid / Drag and Drop

Ref: http://wijmo.com/topic/flexgrid-drag-and-drop/ http://wijmo.com/topic/wijgrid-and-draggable-rows/ http://jsfiddle.net/Wijmo5/0z1ou6cn/ http://jsfiddle.net/tzd95q74/ //=================== <div class="container">   <h1>     Dragging Rows from the FlexGrid   </h1>   <p>     You can use the HTML5 drag/drop API to implement row dragging     from, into, or between FlexGrid controls.</p>   <p>     This simple example shows how you can drag rows from the     grid into arbitrary elements. You can easily extend this     to support move operations (by removing the row from the     source grid when the operation is completed) or dropping     into grids (by detecting the drop position and inserting     new rows into the target grid).</p>   <p>     Drag r...

142857 (number)

1 × 142,857 = 142,857 2 × 142,857 = 285,714 3 × 142,857 = 428,571 4 × 142,857 = 571,428 5 × 142,857 = 714,285 6 × 142,857 = 857,142 7 × 142,857 = 999,999 (= 142857 + 857142) 9/7      =1.2857142857142857142857142857143 99/7    =14.142857142857142857142857142857 999/7  =142.71428571428571428571428571429 9999/7=1428.4285714285714285714285714286 Ref: https://en.wikipedia.org/wiki/142857_(number) 123456789*9  =1111111101 123456789*18=2222222202 123456789*243=29999999727 123456789*108=13333333212 柯斯特利金的优秀教材《 代数学引论 》 Alexei I Kostrikin (1929~2000). 1929年2月生于大莫雷斯。1952年毕业于莫斯科大学 数学 力学系,1959年获数理科学博士学位。1972年任莫斯科大学高等 代数 《 拓扑与几何 》  是2008年1月1日出版 作者是(美国) Bredon 布里 登