MATL CHATL

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Luis Mendo

10:43

Maybe you can duplicate those inputs "before" instead of "after". So the copy wouldn't have to go to the bottom, but to the top. Does that make any sense?

4 hours later…

Suever

14:20

@LuisMendo Do we have a good way to shuffle a cell array?

The jobs answer really seemed bloated for doing that: nZ@)

Luis Mendo

@Suever I can define Z@ ( randperm) to work with cell input. However, it can't work with normal array input, because then something like 5 could correspond to number 5 (and thus array 1:5) or to the array 5

But yes, for cell arrays it can be done. I'll add that for next version

Hm wait

randsample?

>> matl {1 2 3}tnZr
2
3
1

Suever

Oh that could work!

Got it down to 6 bytes

I'm sure I can work with the input order a bit

There we go 5 bytes. Probably as low as it can get

Thanks!

Luis Mendo

14:39

Wow! What an improvement

Done this:

>> matl -h Z@
Z@  random permutation
    1--3 (1 / 2);  1
    randperm (produces a row vector as output). If 3 inputs: third
    input indicates number of permutations, each on a different row.
    First input can also be a cell array or a char array, and then
    its elements are permuted
>> matl {'abc' 'de' 'fghij'}Z@
de
fghij
abc

I will commit this weekend

Suever

Yea that could definitely save some bytes over doing {'abc', 'de', 'fg'}tnZr

Although maybe it would be &Zr

Oh no it requires two inputs

Luis Mendo

So now you are winning! :-) Provided input is flexible, that is. But most answers assume that

Suever

And output

It's a pretty poorly written question

Also there is something weird with YX

It doesn't actually respect any regex

It basically just works as a non-overlapping strrep

Luis Mendo

Huh? Can you give an example?

Essentially YX just calls regexprep

Suever

Yea let me dig it up

Oh just kidding, it works, I'm just doing a strfind first to see if it exists and the regex doesn't match

I used it here matl.tryitonline.net/…

Because I can't use strrep since that replaces overlapping matches

So if you pass a specially crafted string it fails to work

matl.tryitonline.net/…

aw crap

Doesn't seem to work when there are more jobs than workers. — Emigna 11 mins ago

Luis Mendo

14:53

@Suever ? But that works as expected. 'aba.*' matches the whole string, which then gets replaced by ''

@Suever Aww

Suever

Right sorry that's what I meant, the regex works expected but doesn't quite guarantee the challenge to work

Because they want a basic non-overlapping strrep

I'll delete that other one for now until I think of a better way to deal with different length strings.

it sucks because you may have to chop either

Some looping structure may be better

and display within the loop so it errors out

Luis Mendo

@Suever Ah, ok

@Suever Yes, that sounds good

7 hours later…

StackExchange

21:44

Luis Mendo has made a change to the feeds posted into this room

Luis Mendo

New release of the language

github.com/lmendo/MATL/releases/tag/18.0.0

Description:

* Third and fourth (optional) inputs of `Ys` (`cumsum`) can now be a single input
* `Xv` (remove whitespace) unified with `Xz` (`nonzeros). Also, char(0) is now considered whitespace
* `X+` has been removed. Use `Y+` ot `Z+` instead (`conv2`). In addition, `Y+` allows string input flag to be replaced by a number; and both `Y+` and `Z+` now allow sparse input in Matlab
* Added `polyfit` function as 3-input version of `ZQ`
* Octave compatibility: `kron` now automatically converts inputs to `double`, as happens in Matlab

Luis Mendo

22:25

@David Suever's very nice script tells me that this answer of yours uses X+. This function has been removed, as Y+ does the same (sorry about that)

1 hour later…