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Correlation between NASDAQ price, Corn and Gold(Corr=0.945)

 I wrote Python code which shows Correlation between NASDAQ price, Corn and Gold(Corr=0.945). Corn and Gold are best mix I have found. https://gist.github.com/Kouhei-Takagi/a1a9b073f6cd6dacb7eb1ea871d8fd3c I changed some important parts. https://gist.github.com/Kouhei-Takagi/5becaf7c3a24d63ac9c56856e81297f2
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Coding empowers me...

2018/8/19. Is my environment let or var?

I am learning programming language Swift for 10 months.
And my environment is changing a lot.
I taught it was fixed when I worked for one company. But it was not. 
After I was fired, I released my 2 apps.
They are downloaded a little. There are some reasons as so. 
Important point is not the numbers of downloads. I can change my environment by myself. I couldn’t make apps in last year. This is very big surprise.
And I realize that my environment is var (variable), not let (constant).

Coding empowers me...


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