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Re: ReleaseInfo[command_String]? -A useless dream?
Hi, > > Is there a way to access to the 'release information' for each command > in Mathematica? No. > What I'd like to know is the release where the command first appeared > and the releases where it was modified or suppressed. Better yet would > be to access to more detailed information about the changes it has > undergone > (such as the old and the new syntax and the old and new I/O parameters) > Looking up the book each time one has a hunch that the command might > have been changed usually results (I talk for myself) in not looking at > all. Mathematica is more than 10 years old ! Some people that wrote the first version ( Jerry Keiper) are dead, and over 10 years I expect that some kernel developer are not working for WRI. More over it is common in Mathematica, that obsolente functions are removed form the documentation (like Literal) but left in the Kernel for backward compatibility. > > It is not difficult to write a simple routine that will show the > information (at least I think so) but the problem resides in where to > find the data, without having to buy all of the four MathBooks and > typing command after command the 'what's new' part. > AFAYK, is this data already available in electronic - a table I mean - > format? > Must be far from small... > > Besides, am I the only one to think that such information would be > useful? Yes. Because I can't see how to benefit from the knowlege that some function is replaced by an better one or a certain option droped from a function. I think such information will create a information overkill for functions and options that are forgotten since 6 years. > To write more robust packages that run on different versions and to > adapt packages that come from different versions are not tasks strictly > for developers. I have several packages since version 1.2 and I have found only minor differences that can be fixed easy. The N change in version 3.0 - 4.0 have created the most problems. Allmost all other problems come form some undocumented functions I had used :-) > Common people can access two different version of Mathematica at the university, > or at work and at home, and it is common to download packages from the > net which may be written in a version different from one's own. > Not to mention uploading packages to the Mathsource. Mathematica share not the version numbering of Microsoft ! so you have only to look for $VersionNumber==3 or 4 and make some changes. I the most cases this are changes to improve the performance and switch to an new (faster) buld-in command. Regards Jens