前面添加个lapply()或者dplyr::llply()就能读取,储存多个文件了.http://bluemountaincapital.github.io/FSharpRProvider/reading-rdata.html Reading and writing RData files When using R, you can save and load data sets as *.rdata files. These can be easily exported and consume…
Introduction A common requirement is to have applications share data with other programs. Although there are interfaces available to work with, for example, Microsoft Excel data files, this approach is generally complex, involves a fair amount of ove…
Below is the example to write file on client in Oracle Forms 10g with webutil library package.Note: Webutil library must be attached to the form.DECLAREv_dir VARCHAR2(250) := 'c:\temp';ft_tempfile CLIENT_TEXT_IO.FILE_TYPE;beginft_tempfile := CLIENT_…
来源于:https://www.mkyong.com/java/apache-poi-reading-and-writing-excel-file-in-java/ In this article, we will discuss about how to read and write an excel file using Apache POI 1. Basic definitions for Apache POI library This section briefly describe a…
A text file is a sequence of characters stored on a permanent medium like a hard drive, flash memory, or CD-ROM. To read a file, you can use open to create a file object: Mode ‘r’ means that file is open for reading. The file object provides several…
referee:Java Programming Tutorial Advanced Input & Output (I/O) JDK 1.4+ introduced the so-called New I/O int java.nio package and its auxiliary packages to support high performance and intensive I/O operations. NIO is meant to complement the existin…
Awesome系列的.Net资源整理.awesome-dotnet是由quozd发起和维护.内容包括:编译器.压缩.应用框架.应用模板.加密.数据库.反编译.IDE.日志.风格指南等. 算法与数据结构(Algorithms and Data structures) Algorithmia - Algorithm and data-structure library for .NET 3.5 and up. Algorithmia contains sophisticated algorithms…
I/O The original byte-oriented library was supplemented with char-oriented, Unicode-based I/O classes. It's rather important to understand the evolution of the I/O library. The File class "FilePath" would have been a better name for the class. I…
10.1. Operating System Interface The os module provides dozens of functions for interacting with the operating system: >>> >>> import os >>> os.getcwd() # Return the current working directory 'C:\\Python34' >>> os.chdir…
转自 http://www.samontab.com/web/2012/06/installing-opencv-2-4-1-ubuntu-12-04-lts/ EDIT: I published a new guide using Ubuntu 14.04 LTS and OpenCV 2.4.10 here. The latest Long Term Support version of Ubuntu(12.04 LTS) is out and a new version of OpenCV…
可以查看Android开发文档中的:/docs/guide/topics/data/data-storage.html Android provides several options for you to save persistent application data. The solution you choose depends on your specific needs, such as whether the data should be private to your appli…
下面的 PHP Excel 处理类中,包含 Excel 读写.导入导出等相关的类,列表如下: PHP Excel Reader classes 1. Read Excel Spreadsheets using COM Umesh Rai (India) 2. Read Excel Binary .XLS Files in Pure PHP Ruslan V. Uss (Russian Federation) 3. Read Excel Spreadsheets using ODBC khalil…
1 Overview Spark SQL is a Spark module for structured data processing. It provides a programming abstraction called DataFrames and can also act as distributed SQL query engine. 2 DataFrames A DataFrame is a distributed collection of data organized…
Installing OpenCV 2.4.1 in Ubuntu 12.04 LTS 这是转载国外一篇文章 移植PC上的OPENCV http://www.samontab.com/web/2012/06/installing-opencv-2-4-1-ubuntu-12-04-lts/ The latest Long Term Support version of Ubuntu(12.04 LTS) is out and a new version of OpenCV was relea…
下面的 PHP Excel 处理类中,包含 Excel 读写.导入导出等相关的类,列表如下: PHP Excel Reader classes 1. Read Excel Spreadsheets using COM Umesh Rai (India) 2. Read Excel Binary .XLS Files in Pure PHP Ruslan V. Uss (Russian Federation) 3. Read Excel Spreadsheets using ODBC khalil…
前两天看了<Reading and Writing CSV Files in MFC>(http://www.codeproject.com/Articles/53759/Reading-and-Writing-CSV-Files-in-MFC)发现它只针对文件中的一行读写,而且只能作为一个局部变量使用,或者读,或者写,不能同时兼用,更不能作为类的变量,更别说扩展了.而且,它只支持在MFC条件下实现,如果我们需要在一个模块当中呢?在一个库中呢?在非MFC中呢?不过,它的读取遍历算法和写入算法我…
Proactor An Object Behavioral Pattern for Demultiplexingand Dispatching Handlers for Asynchronous Events Douglas C. Schmidt Known Uses The following are some widely documented uses of the Proctor pattern: I/O Completion Ports in Windows NT: The Wi…
可以用gem help commands看所有支持的参数,这个比gem -h显示的全: wisy@wisy-ThinkPad-X61:~/src/ruby_src$ gem help commands GEM commands are: build Build a gem from a gemspec cert Manage RubyGems certificates and signing settings check Check a gem repository for added or m…
https://github.com/PacktPublishing/Game-Development-Patterns-and-Best-Practices https://github.com/mattCasanova/Mach5 1. Introduction to Design Patterns (已看) 2. One Instance to Rule Them All - Singletons (已看) 3. Creating Flexibility with the Componen…
具体见:https://github.com/thangchung/awesome-dotnet-core 半年前看到的,今天又看到了,记录下. 框架类: ZKWeb ABP General ASP.NET Core Documentation - The official ASP.NET Core documentation site. .NET Core Documentation - Home of the technical documentation for .NET Core, C#…
在实际应用中经常会遇到要压缩数据的问题,常见的压缩格式有zip和rar,而Linux下那就更多了,bz2,gz,xz什么的都有,单单Linux下的解压和压缩命令就有好多呢?没有什么好不好的.查了资料,应该是zlib这个比较简单好用.应用也广,所以就准备用这个了. 下载Zlib库,地址: http://zlib.net/zlib128.zip 用wget下载,然后再用unzip解压一下,然后就像一般软件一样 ./configure && make && make instal…
Horst Rutter edited this page 7 days ago · 529 revisions Indexes and search engines These sites provide indexes and search engines for Go packages: awesome-go - A community curated list of high-quality resources. Awesome Go @LibHunt - Your go-to Go T…
