dplyr package

Http://blog.chinaunix.net/uid-26602509-id-3076870.html Source code and binary packages are two forms of software packages. The binary package contains a program that has been compiled and can be run immediately. All you need to do is download and pack (install) them and use them immediately. The source code package contains the original program code, you need to compile on your computer before you can ru

Package Diagram introduction and common operations of package diagram in rational Package chart Introduction 1. Definition: group model elements and provide a namespace for the elements in the group. 2. role: it is easy to understand complex systems and control the connections between various parts of the system structure. Logically, you can modularize a complex

Using relative package import in Python sometimes is a very painful thing, sometimes using the relative package import clearly can be in operation, but changed a way of operation is not possible. This article is going to solve this problem in depth, in the process of looking at the code to continue to practice, understand Python relative package import.This artic

Use InstallShield to package the VS program, and installshield to packageUse InstallShield to package the VS Program InstallShield is a packaging tool of Microsoft, which has its own advantages and disadvantages. Its advantages can be very good and convenient.. NET platform controls and the dll required by the program are packaged successfully. Its disadvantage is that pre-installation is required during in

), it is not necessary for us to define classes in the program because their class definitions are already loaded into memory. But for a user-defined object, the class must be defined before the object can be loaded from the file (such as an object in the basic object-oriented concept summer).Pickle BagFor the above procedure, the most common tool is the pickle package in Python.1) Convert an in-memory object into a text stream:Import pickle# define C

Php obtains the apk package information. php obtains the apk package. Sometimes, when using php to upload an android apk package, we need to obtain the information in the android apk package. This article describes how php obtains the apk package information in the form of a

How do I customize the composer package, and how do I use the custom package in the Laravel framework? Reply content: How do I customize the composer package, and how do I use the custom package in the Laravel framework? This actually has several problems to solve.Is your custom

If vs2010 is used properly, an error is reported this afternoon. The "Windows Forms designer package" package cannot be correctly loaded. Package load failurePackage 'windows forms designer hosting package' has failed to load properly (guid = {68939055-38e0-4d17-92cb-8909710d8178 }). pls contact

First, you need a NuGet account, which can be registered on the website: https://www.nuget.org. Existing account is slightly. Need a Apikeys, after login, in my account to find Apikeys go in; Create Apikeys Download Nuegt tool: Https://www.nuget.org/downloads Nuget.exe Put Nuget.exe in the csproj file directory Press and hold the shift+ mouse right-click to open the command window here Set Apikeys: Command format: NuGet Setapikey the created key in your accoun

We've seen Python's most basic mathematical operations in Python operations. In addition, the math package complements more functions. Of course, if you want more advanced math, consider selecting NumPy and scipy projects outside of the standard library, which not only support array and matrix operations, but also rich mathematical and physical equations to use. In addition, the random package can be used

Use the Setup Factory installation package creation tool to create the installation package, setupfactory After we develop the software, in addition to a few cases, we copy the entire directory to the customer, we generally need to make the installation package to facilitate the deployment of the entire software, to deploy an installation