close

关闭文件并释放相关资源。

close()

function main() {
    let file = os.open("data.txt", "w")
    file.write("Hello YouQuant!")
    file.close()  // 必须关闭文件
}

标准的文件操作流程示例。

使用完文件对象后必须调用此方法以释放系统资源。

{@fun/OS/File/close close}, {@fun/OS/File/puts puts}, {@fun/OS/File/printf printf}, {@fun/OS/File/flush flush}, {@fun/OS/File/tell tell}, {@fun/OS/File/seek seek}, {@fun/OS/File/eof eof}, {@fun/OS/File/read read}, {@fun/OS/File/write write}, {@fun/OS/File/getline getline}, {@fun/OS/File/toString toString}