dc | 易学教程

同事提醒我：不要踩到 LocalDateTime 的这个坑！

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public static void main(String[] args) { JDateTime dt = new JDateTime(); System.out.println(dt.addDay(1));//原对象 System.out.println(dt); LocalDateTime dc = LocalDateTime.now(); System.out.println(dc.plusDays(1));//新对象 System.out.println(dc); dc = dc.plusDays(1); System.out.println(dc); } 运行结果： 2019-12-24 18:43:25.283 2019-12-24 18:43:25.283 2019-12-24T18:43:25.364 2019-12-23T18:43:25.364 2019-12-24T18:43:25.364 dc.plusDays(1) 创建了新对象！！来源： CSDN 作者： Stephen_java 链接： https://blog.csdn.net/u012477144/article/details/103668946

Most elegant unix shell one-liner to sum list of numbers of arbitrary precision?

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问题 As regards integer adding one-liners, several proposed shell scripting solutions exist; however, on closer look at each of the solutions chosen, there are inherent limitations: awk ones would choke at arbitrary precision and integer size (it behaves C-like, afterall) bc ones would rather be unhappy with arbitrarily long inputs: (sed 's/$/+\\/g';echo 0)|bc Understanding that there may be issues of portability on top of that across platforms (see [1] [2]) which is undesired, is there a generic

DC综合流程

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下文只是根据DC综合流程写的一些流程、用到的命令等非dc启动文件、约束脚本来源： https://www.cnblogs.com/baihuashan/p/11943937.html

delphi 控件背景透明代码

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procedure DrawParentBackground(Control: TControl; DC: HDC; R: PRect = nil; bDrawErasebkgnd: Boolean = False); var SaveIndex: Integer; MemDC: HDC; MemBmp: HBITMAP; begin if R <> nil then begin MemDC := CreateCompatibleDC(DC); MemBmp := CreateCompatibleBitmap(DC, Control.Width, Control.Height); SelectObject(MemDC, MemBmp); try with Control.BoundsRect.TopLeft do SetWindowOrgEx(MemDC, X, Y, nil); if bDrawErasebkgnd then Control.Parent.Perform(WM_ERASEBKGND, Integer(MemDC), Integer(MemDC)); Control.Parent.Perform(WM_PAINT, Integer(MemDC), Integer(MemDC)); with Control.BoundsRect.TopLeft do BitBlt