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| 17 Jan 2020 |
| 02:57:35 | Yasmi | very noobish question, what does a newline mean in a function definition? |
| 02:58:34 | Yasmi | if some pure function was called on one line, and the return value was not attached to anything, and then newline, does nothinig happen? |
| 03:01:12 | Yasmi | and how should I look up questions about syntax in the documentation? |
| 06:20:00 |  croeso | It means nothing. In your example is the pure function call the last expression in the function? If so, the return value becomes the result of the function |
| 07:12:46 | Yasmi | ok thank you 🥰 |
| 22:29:38 | |  adrian joined the room. |
| 18 Jan 2020 |
| 03:03:21 |  petersjt014 | Hi:
I'm having some trouble with :io.format. I want to output a set of hex numbers with padding of zeroes. Right now this is what I have: |
| 03:05:02 | petersjt014 | Enum.each(0..16, fn i -> :io.format "2.16B~n", [i] end) |
| 03:06:08 | petersjt014 | All of them are padded with spaces, the default. How do I pad with zeroes? |
| 03:08:21 | petersjt014 | The docs are here, but I can't figure out how to apply them to this situation: erlang.org/doc/man/io.html#type-format |
| 03:42:23 |  uhoreg | Enum.each(0..16, fn i -> :io.format "~2.16.0B~n", [i] end) |
| 03:52:38 | petersjt014 | Oh hey that works, thanks! I gotta ask though: the B is for base, how can it not be after the 16? |
| 03:55:49 | uhoreg | The B needs to be the last character of the control character, but it takes the base from the precision field, which comes before the pad field. |
| 03:57:37 | petersjt014 | Ah. I get it now. Thanks again |
| 19 Jan 2020 |
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| 20 Jan 2020 |
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