Why Note This is a modified version of the original document from Michalis, because we authors of http: There are many books and resources about Pascal out there, but too many of them talk about the old Pascal, without classes, units or generics. So I wrote this quick introduction to what I call modern Object Pascal.
Creating R packagesPrevious: Writing R documentation filesPrevious: The R distribution itself includes about 30 packages. In the following, we assume that you know the library command, including its lib.
See Add-on-packages in R Installation and Administration. Other types of extensions are supported but rare: Some notes on terminology complete this introduction.
These will help with the reading of this manual, and also in describing concepts accurately when asking for help. A package is a directory of files which extend R, a source package the master files of a packageor a tarball containing the files of a source package, or an installed package, the result of running R CMD INSTALL on a source package.
On some platforms notably macOS and Windows there are also binary packages, a zip file or tarball containing the files of an installed package which can be unpacked rather than installing from sources.
A package is not 1 a library. The latter is used in two senses in R documentation. A directory into which packages are installed, e. Installed packages may contain compiled code in what is known on Unix-alikes as a shared object and on Windows as a DLL.
The concept of a shared library dynamic library on macOS as a collection of compiled code to which a package might link is also used, especially for R itself on some platforms.
On most platforms these concepts are interchangeable shared objects and DLLs can both be loaded into the R process and be linked againstbut macOS distinguishes between shared objects extension.Clozure CL is a fast, mature, open source Common Lisp implementation that runs on Linux, Mac OS X, FreeBSD, and Windows.
Clozure CL was forked from Macintosh Common Lisp (MCL) in and the development has been entirely separate since. A clustered index is a special type of index that reorders the way records in the table are physically stored.
Therefore table can have only one clustered index.
The “ undoing ”, on rolling back the transaction, of changes made to GTTs that were created with the ON COMMIT DELETE ROWS option was an unnecessary overhead and has been bypassed. Garbage collection in global temporary tables was being delayed unnecessarily by .
So I wrote this quick introduction to what I call modern Object benjaminpohle.com of the programmers using it don’t really call it "modern Object Pascal", we just call it "our Pascal".But when introducing the language, I feel it’s important to emphasize that it’s a modern, object-oriented language.
Like any programming language, the Java language has its own structure, syntax rules, and programming paradigm. The Java language's programming paradigm is based on the concept of OOP, which the language's features support.
Sep 21, · PDF files that contain the Visual Studio documentation.