D on Tiobe Index

[bitwise via Digitalmars-d-announce]

On Wednesday, 6 September 2017 at 11:14:00 UTC, Maksim Fomin 
wrote:
> On Thursday, 31 August 2017 at 16:37:35 UTC, SrMordred wrote:
>> On Thursday, 31 August 2017 at 14:57:28 UTC, bitwise wrote:
>>> https://www.tiobe.com/tiobe-index/d/
>>
>> What happened in 2009?
>
> My guess is constant random methodology changes. I was tracking 
> TIOBE index each month from 2011 till 2016. I remember they 
> announced changes in methodology in title page approximately 
> once per 3-4 months. For example, changing the base from 100% 
> to sum of percentages of all languages(<100%) increased 
> reported % of each language. Taking this into account means 
> that changes in particular month tells nothing. The trend is, 
> however, positive: in 2014-2017 years D stands higher than in 
> 2011-2014 (if you have faith in TIOBE averages). I see 
> sometimes positive discussions about D at completely unexpected 
> local tech sites.
>

That was my thinking too. A real dip as large as what's shown on 
the graph for 2009 would probably take 3-4 large companies that 
use D randomly shutting down in perfect unison - highly unlikely. 
I think that if the glitch were removed, what would remain would 
be a nice steady upward slope.