Always add implicit + for exponent part of floating point literals

[fredrikekre]

For example:

-1.2e5
+1.2e+5

[pjaap]

I thought about this question for a while and I think it is better not to add (enforce) a + for positive exponents.
My arguments are:

• It does not show up anywhere in articles about scientific notation (e.g., Wikipedia, Julia Doc for FP Numbers)
• Julia's display of floating point numbers does not use + (we would have inconsistency with copy&paste of values)

Some counterarguments:

• Julia's BigFloat uses +
• It aligns well with the mantadory - for negative exponents

Are there any other intentions I am missing?

[fredrikekre]

Yea you are probably right.

It aligns well with the mantadory - for negative exponents

This was my main motivation for this issue but leaving it up to the author to include or not is probably good enough (e.g. if you want to align numbers with positive and negative exponents etc).

Julia's BigFloat uses +

I wonder if that should be removed actually, I don't see why it should print differently from doubles.