How widely used is a language?
How widely used is a language? Nobody really knows and since there is nothing anybody can do to control usage (both IBM and the US DOD have tried) the question is probably of only academic interest.
Languages are used in a variety of ways and contexts, and it is possible that while one language currently occupies the greatest number of programmer hours, a different one has the greatest number of lines of code ever written in it, another the greatest number of lines of code currently in existence, and a fourth utilize the most CPU time.
Some languages are very popular for particular kinds of applications or within industries. For example, COBOL is still strong in corporate data centers; Fortran in engineering applications; C in embedded applications and operating systems; C++ and Java for writing desktop applications; Perl, PHP, etc. for web based applications.
There are various methods of measuring language popularity, each subject to a different bias over what is measured, that might be used, including:
Some of the above material exists in a section of a Wikipedia article I wrote some time ago.
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January 5th, 2011 at 14:57 | #1The Shape of Code » Language usage in Google’s ngram viewer
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