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Required fields*

Rev

Required fields*

What year will it be in n seconds?

You are given an integer n as input, and, regardless of the current date, must return the calendar year (Gregorian calendar, other calendars not allowed) taking place n seconds from now.

Rules

You may not assume that the current year is 2021. In other words, imagine a user testing your solution in five years.
Standard loopholes forbidden.
Shortest answer in bytes wins.
Built-in date functions are allowed.
You must also support negative numbers.
On the topic of the year zero: Your answer must follow the ISO specifications, meaning there is a year zero.
You may assume that the input is always an integer within bounds of your language number system.
If your language's date functions take leap seconds into account, then follow your language, otherwise do not take leap seconds into account.

Examples (in this case, measured at the time of writing, which is February 15, 2021)

100000000000 -> 5190
1000 -> 2021
54398643 -> 2022
54398643234 -> 3744
-100000000000 -> -1148

Answer*

# [APL (Dyalog Unicode)], 20 [bytes](https://codegolf.meta.stackexchange.com/a/9429/43319 "When can APL characters be counted as 1 byte each?") ([SBCS](https://github.com/abrudz/SBCS ".dyalog files using a single byte character set"))

Full program, prompting for `n` from stdin.

```apl
⊃⊃20 ¯1⎕DT⎕+20⎕DT'J'
```

`20⎕DT'J'` get current local* (**J**uliett) **D**ate**T**ime as UNIX time (code 20; seconds from beginning of 1970)

`⎕+` prompt for `n` and use that to increment the UNIX time.

`20 ¯1` interpret as UNIX times (code 20) and convert to an array of time stamps (code -1)

`⊃` extract the first (and only) time stamp

`⊃` extract the first element (the year)

[Try APL!][TIO-kl6nnami] (first and last case scaled down by a factor of 10 to avoid hitting date-time limits, 1 January 0001 though 28 February 4000; turned into function for ease of use)

\* could also have `'Z'` (**Z**ulu) to use the current UTC time instead of local time.

[APL (Dyalog Unicode)]: https://www.dyalog.com/
[TIO-kl6nnami]: https://tryapl.org/?clear&q=%7B%E2%8A%83%E2%8A%8320%20%C2%AF1%E2%8E%95DT%E2%8D%B5%2B20%E2%8E%95DT%27J%27%7D%C2%A810000000000%201000%2054398643%2054398643234%20%C2%AF1000000000&run "TryAPL"

If this is an answer to a challenge…

…Be sure to follow the challenge specification. However, please refrain from exploiting obvious loopholes. Answers abusing any of the standard loopholes are considered invalid. If you think a specification is unclear or underspecified, comment on the question instead.
…Try to optimize your score. For instance, answers to code-golf challenges should attempt to be as short as possible. You can always include a readable version of the code in addition to the competitive one. Explanations of your answer make it more interesting to read and are very much encouraged.
…Include a short header which indicates the language(s) of your code and its score, as defined by the challenge.

More generally…

…Please make sure to answer the question and provide sufficient detail.
…Avoid asking for help, clarification or responding to other answers (use comments instead).

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\$\begingroup\$ I don't really understand APL, so I don't entirely know what the problem is, but when I paste your code into tryapl it gives me an error? \$\endgroup\$

user100690
– user100690

2021年02月15日 14:17:00 +00:00
Commented Feb 15, 2021 at 14:17
\$\begingroup\$ @expressjs123 tryAPL uses a safe version of APL which prevents people from running malicious code, so it'll give you an error for using ⎕. \$\endgroup\$

Razetime
– Razetime

2021年02月15日 14:43:17 +00:00
Commented Feb 15, 2021 at 14:43
\$\begingroup\$ Lots of multibyte unicode characters here, "echo '⊃⊃20 ¯1⎕DT⎕+20⎕DT\'J\'' | wc -c" gives me 32 which after removing the newline makes 31 bytes. \$\endgroup\$

timthelion
– timthelion

2021年02月16日 17:16:13 +00:00
Commented Feb 16, 2021 at 17:16
\$\begingroup\$ @timthelion Sorry about that. Fixed now. \$\endgroup\$

Adám
– Adám

2021年02月16日 17:17:10 +00:00
Commented Feb 16, 2021 at 17:17

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