In regards to your CV, one thing I was told never to do was to list too many languages. A lot of people have a tendency to list every language they've ever used, this, unfortunately, can have a negative effect as it comes across as "jack of all, master of none". In other words, it comes across as if you can't decide which language to stick with, you've tried them all, but you've not mastered any.

In all honesty I don't know if that is true or not, but I always thought it made sense.

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Any fool can write code that a computer can understand. Good programmers write code that humans can understand.