2009年2月开发语言排行榜

本月前三依然是 JAVA,C,C++占据，和上月相比，JAVA略微上升到19.401，而C，C++和以往相比均略微下降，分别是15.837，9.663.排行榜前十的只有JavaScript和Delphi位置互换

TIOBE Programming Community Index for February 2009

February Headline: RPG (AS/400) replaces COBOL in top 20

The TIOBE Programming Community index gives an indication of the popularity of programming languages. The index is updated once a month. The ratings are based on the number of skilled engineers world-wide, courses and third party vendors. The popular search engines Google, MSN, Yahoo!, and YouTube are used to calculate the ratings. Observe that the TIOBE index is not about the best programming language or the language in which most lines of code have been written.

The index can be used to check whether your programming skills are still up to date or to make a strategic decision about what programming language should be adopted when starting to build a new software system. The definition of the TIOBE index can be found here.

Position
Feb 2009Position
Feb 2008Delta in PositionProgramming LanguageRatings
Feb 2009Delta
Feb 2008Status11Java19.401%-2.08%  A22C15.837%+0.98%  A35 C++9.633%+0.36%  A43 (Visual) Basic8.843%-2.76%  A54 PHP8.779%-1.11%  A68 C#5.062%+0.55%  A77Python4.567%-0.20%  A86 Perl4.117%-2.09%  A99Delphi3.624%+0.83%  A1010JavaScript3.540%+1.21%  A1111Ruby3.278%+1.42%  A1212D1.259%+0.07%  A1313PL/SQL0.988%+0.01%  A1414SAS0.835%-0.11%  A1522 Logo0.813%+0.50%  A--1617 Pascal0.689%+0.24%  B1729 ABAP0.574%+0.42%  B1821 ActionScript0.539%+0.22%  B1926 RPG (AS/400)0.505%+0.33%  B2018 Lua0.487%+0.10%  B

 

Long term trends

The long term trends for the top 10 programming languages can be found in the line diagram below.

 

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Other programming languages

The complete top 50 of programming languages is listed below. This overview is published unofficially, because it could be the case that we missed a language. If you have the impression there is a programming language lacking, please notify us at [e-mail].

PositionProgramming LanguageRatings21FoxPro/xBase0.484%22COBOL0.470%23Lisp/Scheme0.433%24MATLAB0.417%25Ada0.349%26Fortran0.305%27Transact-SQL0.290%28PowerShell0.261%29LabVIEW0.228%30Prolog0.205%31Erlang0.192%32Objective-C0.181%33Scratch0.166%34Alice0.163%35Haskell0.161%36NXT-G0.157%37ML0.155%38Awk0.144%39Euphoria0.134%40Groovy0.129%41Caml/F#0.127%42Progress0.119%43Focus0.119%44Bourne shell0.118%45Smalltalk0.116%46Q0.114%47CL (OS/400)0.113%48Scala0.113%49Forth0.107%50Tcl/Tk0.106%

 

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The Next 50 Programming Languages

The following list of languages denotes #51 to #100. Since the differences are relatively small, the programming languages are only listed (in alphabetical order).

 

• ABC, AD, Alpha, APL, Applescript, Beta, Boo, C shell, cg, Ch, Clean, cT, Curl, Dylan, Eiffel, Factor, Icon, IDL, Inform, Io, J, Lingo, MAD, Magic, Maple, Mathematica, MAX/MSP, MOO, MUMPS, Natural, Occam, Oz, PILOT, PL/I, Pliant, Postscript, PowerBuilder, R, REALbasic, Revolution, REXX, S-lang, SIGNAL, SPSS, Squirrel, SuperCollider, VBScript, Verilog, VHDL, XSLT

 

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February Newsflash - Brought to you by Paul Jansen

• This month the following languages have been added to the list of languages to be monitored: Arc, Automator, and MAX/MSP.
• To see the bigger picture, please find the 5 years delta in the table below.
  
  Position
  Feb 2009Position
  Feb 2004Delta in PositionProgramming LanguageRatings
  Jan 2009Delta
  Jan 200411Java19.401%-3.16%22C15.837%-2.36%33C++9.633%-6.08%45 (Visual) Basic8.843%-0.30%56 PHP8.779%+1.52%67C#5.062%+2.88%79 Python4.567%+3.56%84 Perl4.117%-5.36%911 Delphi3.624%+2.90%108 JavaScript3.540%+1.40%1125 Ruby3.278%+3.13%
  
• The winners of the "Language of the Year" award are shown below.
  
  YearWinner2008 C 2007 Python 2006 Ruby 2005 Java 2004 PHP 2003 C++
• In the tables below some long term trends are listed about categories of languages. The object-oriented paradigm is still very high with 55.9%. The popularity of dynamically typed languages seems to stabilize (see trend diagram below).
  
  CategoryRatings February 2009Delta February 2008Object-Oriented Languages 55.9% +1.3% Procedural Languages 39.9% -2.7% Functional Languages 3.0% +1.2% Logical Languages 1.2% +0.2%
  
  CategoryRatings February 2009Delta February 2008Statically Typed Languages 59.0% +2.1% Dynamically Typed Languages 41.0% -2.1%

   

  

 

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Frequently Asked Questions

• Q: What definition of programming languages has been used?
  
  

  A: A language is considered a programming language if it is Turing complete. As a consequence, HTML and XML are not considered programming languages. This also holds for data query language SQL. SQL is not a programming language because it is, for instance, impossible to write an infinite loop in it. On the other hand, SQL extensions PL/SQL and Transact-SQL are programming languages. ASP and ASP.NET are also not programming languages because they make use of other languages such as JavaScript and VBScript or .NET compatible languages. The same is true for frameworks such as Ruby on Rails, ColdFusion, Cocoa, and technologies such as AJAX. Finally, we have also excluded assembly languages, although Turing complete, because they have a very different nature.

• Q: How are dialects of languages grouped?

  A: Some languages are grouped together because they are very similar to each other. An example is the language entry Basic which covers Visual Basic, QBasic, Microsoft Basic, etc. VB.NET has been added as well to the Visual Basic entry because it is often referred to as Visual Basic. The ratings for a collection of languages is calculated by taking the maximum of all individual entries (not its sum!).

• Q: Am I allowed to show the TIOBE index in my weblog/presentation/publication?

  A: This is OK provided that you refer to its original source: www.tiobe.com.

• Q: I would like to have the complete data set of the TIOBE index. Is this possible?

  A: We spent a lot of effort to obtain all the data and keep the TIOBE index up to date. In order to compensate a bit for this, we ask a fee of 1,500 US$ for the complete data set. This might seem a lot of money but it is considered strategic data. The data set runs from June 2001 till today. It started with 25 languages back in 2001, and now measures more than 150 languages at least 10 times per month. The data are availabe in comma separated format. Part of the deal is that new data will be send to you for 1 extra year. Please contact [e-mail] for more information.

• Q: What happened to Java in April 2004? Did you change your methodology?

  A: No, we did not change our methodology at that time. Google changed its methodology. They performed a general sweep action to get rid of all kinds of web sites that had been pushed up. As a consequence, there was a huge drop for languages such as Java and C++. In order to minimize such fluctuations in the future, we added two more search engines (MSN and Yahoo) a few months after this incident.

• Q: Why is YouTube used as a search engine for the TIOBE index?

  A: First of all, YouTube counts only for 7% of all ratings, so it has hardly any influence on the index. YouTube has been added as an experiment. It qualified for the TIOBE index because of its high ranking on Alexa. YouTube is a young platform (so an indicator for popularity) and there are quite some lectures, presentations, programming tips and language introductions available on YouTube.