… and maybe this overview (attached¹) could aid in
understanding the four conjunctions @ & @: &:
(that’s the right part; on the left is rank " which
is another crucial concept when learing J)
keep being fascinated by what’s possible,
curious of why things work the way they do,
and bold enough to ask questions here
Hauke
¹ you’ll need to strip off the .txt extension
Am 04.09.21 um 17:46 schrieb 'robert therriault' via Programming:
Welcome Joseph,
The @: and & operators are actually conjunctions that can take verbs or a noun (in
the case of &) as their operands and have a result that can be a verb or an adverb,
unlike verbs which can only take nouns as arguments and can produce only nouns.
Lots to learn for sure at this point and feel free to ask questions as you move
along the journey. We all started where you are. Very exciting!
Cheers, bob
On Sep 4, 2021, at 08:00, joseph turco <italian.pepe...@gmail.com> wrote:
Thanks Bo,
I am actually following the 'Learning J' book that is on the J website. its
been good so far, but i've been getting a bit confused with the '&' verb
and '@:' verb and what makes them different (they are verbs right?).
Its funny because i was bored of math class in high school and was one of
those kids who "skipped" a lot, but using a language like J has made me
fascinated with what is possible.
regards,
Joseph Turco
On Sat, Sep 4, 2021 at 7:06 AM 'Bo Jacoby' via Programming <
programm...@jsoftware.com> wrote:
Welcome Joseph!
Being an old programmer I became fascinated by J.
There is a lot to learn, but some of it is unnecessary to the beginner.
The 3 operations, addition (+), multiplication (*), and exponentiation
(^), are sufficient for many computations. Having sign change (-) you do
not need subtraction (b-a)=(b+-a), and division (b%a)=(*/(b,a)^1,-1), nor
(%a)=(a^-1), (%:a)=(a^2^-1), (+:a)=(a*2), (-:a)=(a*2^-1), (-.a)=(1+-a),
(>:a)=(1+a), (*:a)=(a^2).
Note that expressions are evaluated from right to left: (a^b^c)=(a^(b^c))
Have fun!
Bo.
Den fredag den 3. september 2021 20.24.11 CEST skrev joseph turco <
italian.pepe...@gmail.com>:
Hello all,
I am a novice programmer and was looking for a language to learn for fun. I
tried APL but I couldn't get the keybindings to work on my computer. I then
found J from reddit and some google fu. It looks like an awesome language,
and i can't wait to learn more and make some fun programs. I'd thought i'd
pop in and say hello, so hi!
regards,
Joseph TUrco
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
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For information about J forums see http://www.jsoftware.com/forums.htm
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For information about J forums see http://www.jsoftware.com/forums.htm
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For information about J forums see http://www.jsoftware.com/forums.htm
--
----------------------
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