This one surprised me. UNIX-y systems have cat(1), as many of us know:

cat file.txt file2.txt > combined.txt

I was surprised by this on Windows, though:

copy *.csv combined.csv

Did everyone else just know that and I'm only learning 20 years later? 😃

    I didn't know about that (or if I did I long forgot it); I use a port of cat on Windows.

    10 days later

    Today I learned

    $foo = 'hello world!';
$foo = ucwords($foo);    
    
echo $foo;
    22 days later

    Today I learned

    $a = [1, 2, 3];
$b = [4, 5, 6];
$c = [...$a, ...$b];

var_dump($c);

    But that doesn't work if the arrays have string keys.

    Weedpacket

    Reminds me that yesterday I learned that in Ruby you can do:

    $ irb
2.4.0 :001 > test = ['a', 'b', 'c', 'd']
 => ["a", "b", "c", "d"]
2.4.0 :002 > test - ['c']
 => ["a", "b", "d"]
        2 months later

        Today I learnt e.preventDefault stops checkbox from being checked....why didn't I know that?

          TIL (okay, a couple days ago) that there is a json_agg() function in PostgreSQL.

          SELECT
  r.review_id,
  r.review_timestamp,
  json_agg(a.*) AS answers
FROM $schema.review r
INNER JOIN $schema.answer a ON a.review_id = r.review_id
WHERE -- stuff
GROUP BY review_id, review_timestamp

          Now I get just one row returned for each relevant review, and each row contains a JSON string with all the answers associated with that review. 🙂

            $schema.answer

            Not sure why my brain is expecting a ? or :schema.answer there

            cluelessPHP Not sure why my brain is expecting a ? or :schema.answer there

            We use Postgres's "schemas" to separate each client's data -- functionally similar to having them each in their own database, except they're not. 🙂 That query was actually extracted from the PHP code that builds the query (and simplified and anonymized here), so $schema would actually be replaced with the relevant schema name for the client being processed, e.g FROM client_foo.review r, and then processed with $pdo->prepare().

              cluelessPHP
              This saddened me a bit. Watched "You Only Live Twice" and "Thunderball" this weekend in his honor. Wish I had a copy of "Robin and Marian", the chemistry he had with Audrey Hepburn was amazing. And I might be a fan indeed as I don't even hate Zardoz TOO much.

              Finally, pretty good compilation of the early Bond themes: https://youtu.be/J4jdUhxOz0M

                dalecosp

                Zardoz is fun if not taken seriously. 🙂

                "The Man Who Would Be King" is pretty darned good. He and Michael Caine make a great pair in it.

                  5 days later
                  25 days later
                  6 days later

                  TIL that the film 'Lawrence of Arabia' had its world premiere 10 years closer to the start of the Great War than to the current day.

                    9 days later

                    sneakyimp you might not like what else ol' Zardoz has to say...

                    You sound like my wife 😆

                    Remember, at the end Connery comes to find out that part ain't true after all ... 😄