javascript anomaly (what a surprise)

[wet crest]

so i have here (simplified):

rank = 0, file = 5
for (i = 0; i < 8; i++) {
    console.log("" + (rank-i) + (file-i));
    console.log("" + (rank+i) + (file+i));
};

which returns

05 (expected)
0050 (what)

what is happening here?

[tacit tusk]

wdym? I get 05

[wet crest]

i did not hmmm

[tacit tusk]

Can you share some more code?

[wet crest]

not really sure what i could share that would add more context

[tacit tusk]

well, what you shared is working correctly, so there's something else causing the error.

Just share whatever you have

[wet crest]

seems to be happening only with the addition

wait would this result if 'rank' and 'file' are strings?

oooooh

lmao what a goofy language

thanks tho

[warm anchor]

The issue with the code is that the console.log statements are concatenating the values of rank-i and file-i, and rank+i and file+i, respectively, without any separator. This results in the values being concatenated together, instead of being printed as separate values.

To fix the code, you can add a separator between the values in the console.log statements. Here's an updated version of the code:

let rank = 0, file = 5;
for (let i = 0; i < 8; i++) {
    console.log("" + (rank-i) + "," + (file-i));
    console.log("" + (rank+i) + "," + (file+i));
};

In this version, a comma is added between the values in the console.log statements to separate them. This should produce the expected output:

0,5
0,5
-1,4
1,6
-2,3
2,7
-3,2
3,8
-4,1
4,9
-5,0
5,10
-6,-1
6,11
-7,-2
7,12

[tacit tusk]

What??? That doesn't solve the problem.

[heavy plume]

concatenating the values of rank-i and file-i, and rank+i and file+i, respectively, without any separator. This results in the values being concatenated together, instead of being printed as separate values.

This is nonsense and doesn't answer the question. It seems to be an answer generated by an AI (ChatGPT) that just isn't helpful.

[wet crest]

lmao problem already solved, rank and file were strings and i didn't realise

[tacit tusk]

In the code sample you sent, they were not. When you concatenate strings with integers, integers are converted to strings.

[wet crest]

the code i posted was simplified and i didn't realise my mistake
addition on a string treats it as concatenation, while subtraction treats it as numerical subtraction