编译出现Command /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc failed with exit code 1错误 来到Preference-Locations,去到DerivedData文件夹,把里面的文件都删掉,重新编译。智能推荐jdk命令行工具 一.jps(JVM Process Status Tool):虚拟机进程状况工具 1.-q:只...