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Git svn 添加忽略文件 添加忽略文件 svn propset svn:ignore "" . # 使用忽略文件.svnignore svn propset svn:ignore -RF .svnignore . svn status --no-ignore .classpath .factorypath .project logs/* log/* logs log target .settings Reference

Linux Posix Head $ echo | g++ -v -x c++ -E - $ echo | gcc -v -x c++ -E - - 异步IO相关的函数 <arpa/inet.h> - IP地址相关的函数 - 顾名思义directory entry - 文件操作 - 对于多语言的支持 - 堆内存的一些高级操作和统计 - 主机名服务名协议名等等操作 <netinet/in.h> - IP地址结构的定义，已经网络主机字节序转换 <sys/socket.h> - socket相关...

Linux proxy Config # bash export http_proxy=http://127.0.0.1:your port export https_proxy=http://127.0.0.1:your port export no_proxy=127.0.0.1,localhost # fish set -Ux http_proxy http://127.0.0.1:your port set -Ux https_proxy http://127.0.0.1:your port set -Ux no_proxy 127.0.0.1,localhost # del evn export http= set -e ... export all_proxy=so...

Flutter 调用 C/C++ 1. C/C++注意事项 dart:ffi 只能绑定C语言的符号, 所以C++需要加上 extern “C” attribute((visibility(“default”))) attribute((used)) C/C++源码建议写在ios/Classes/native_add.cpp目录, 因为CocoaPods不允许源码在 .podspec上层目录, 而gradle允许 Reference Binding to native code using dart:ffi Dart/Flutter ffi (Foreig Function Interface) native callbacks eg...

Linux 基本配置 基本PATH export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:$PATH 添加sudo 1. 切换root 2. vim /etc/sudoers 自动登陆 xfce vim /etc/lightdm/lightdm.conf [SeatDefaults] autologin-user=username #需要登录的用户名 autologin-user-timeout=delay 无显示器, 实现运程控制 需要使用Xorg, 创建虚拟显示器 安装 xserver-xorg-core 安装 xserver-xor...

macOS NTFS和ext格式 install osxfuse install ntfs-3g ext2fuse ext4fuse reboot disable system integrity protection csrutil disable sudo mount -t ntfs -o rw,auto,nobrowse /dev/disk3s1 ~/ntfs-volume Reference Write to NTFS on macOS Sierra (osxfuse + ntfs-3g) How to enable NTFS 3G? Installing a Custom Kernel Extension

SQL 查询 group by 取最新的一条 先order by 再 groub by (order by 需要使用limit, 不然无效) select * from (select * from ab as a order by time desc limit 10000) as b group by time; 使用max() select * from ab as a, (select max(time) as time from ac group by time) as b, where a.time = b.time 联合多个查询结果 UNION 和 UNION ALL UNION 会去重复 和 排序, 所以UNION ...

Java exec macOS JAVA env /Library/Internet Plug-Ins/JavaAppletPlugin.plugin /Library/Java/JavaVirtualMachines sudo cp -r /usr/local/opt/openjdk@8/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-8.jdk sudo ln -sfn /usr/local/opt/openjdk@8/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk-8.jdk Linux 应用输入输出 Linux分为...