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19:27:11
phoe
nwoob: 1) think, 2) write code, 3) ask for help, 4) adjust code based on review, 5) GOTO 1
19:28:40
selwyn
practise... and after you have solved a problem (any problem) try to think how it could have been solved better, what went well/ what was a waste of time, etc. and use the lessons learnt next time
19:33:22
bhartrihari
It might also be helpful to find some interesting puzzles initially to get you going. Like riddle books by Raymond Smullyan for logical (and chess) puzzles. (He also teaches how to think about certain kinds of problems, and go about solving them).
22:14:01
nwoob
I learned recursion from little schemer and there is not return statement while calling recursive function but in other languages I have to add return statement before recursive call why?
0:12:47
kinope
_death: It looks like a sentinel only in name, but its not like a sentinel that you'd use for a list. It's a symbol called 'empty, and it probably exists for the very readon
0:14:27
kinope
the queue doesnt dereference values so it needs a quick way to determine if the queue is effectively empty
0:19:08
kinope
in the case that the queue is effectively empty the head and tail pointers are changed to point to it. But they are not really pointers either, they are just numbers that are used in an array/vector indexing operation
1:36:41
kinope
Morning all! Question. Is it just a matter of style whether one should make a small abstraction like (not (null x)) => not-empty_p, as an inlined function or a macro?
2:00:34
edgar-rft
kinope: I usually decide such a question by looking at my code. If the code is littered with (not (null x)) or some other repetitive pattern I try to find a shorter abstraction for it, but only if it makes the code easier to understand for a human. Every abstraction makes it necessary to learn a new symbol, so it makes no sense to abstract each and everything that only appears rather seldom in my code.
2:06:48
kinope
edgar-rft: Great! thanks. Should one make the abstraction a macro or a inlined function depending on the complexity of the operation?
2:08:59
no-defun-allowed
Macros shouldn't be where functions can be used, so an inlined function would suffice.
2:51:41
White_Flame
a big problem with inline functions in SBCL in particular, is that if you end up with hundreds of them in a single function body (as in a macroexpansion), it can massively slow down compilation
7:10:23
pve
Good morning! Is there a recommended/easy way of testing code on multiple implementations? I mean something I can give my code to and get back compilation and test results for each implementation.
7:25:35
axion
GitHub actions is what we use for pngload: https://github.com/bufferswap/pngload/runs/694176572?check_suite_focus=true