Summary of existing answers plus my own two cents: 1. Basic answer You can use the header() function to send a new HTTP header, but this must be sent to the browser before any HTML or text (so before the <!DOCTYPE …> declaration, for example). 2. Important details die() or exit() Why you should use die() or exit(): The Daily WTF Absolute or relative URL … Read more
Python 3.10 and above In Python 3.10, they introduced the pattern matching. Example from the Python Docs: Before Python 3.10 While the official docs are happy not to provide switch, I have seen a solution using dictionaries. For example: Then the equivalent switch block is invoked: This begins to fall apart if you heavily depend on fall through.
Instead of forcing an underfull box with \newline, you could simply leave an empty line to start a new paragraph:
Count all the DISTINCT program names by program type and push number DISTINCT COUNT(*) will return a row for each unique count. What you want is COUNT(DISTINCT <expression>): evaluates expression for each row in a group and returns the number of unique, non-null values.
I bet you miss dynamic linker. Just do a You should get an output like this: There are high chances that you system lacks the interpreter (/lib64/ld-linux-x86-64.so.2 in the example). In this case bash would yell No such file or directory, just like when the binary itself is missing. You can try to use a different linker. Sometime you can … Read more
It’s fatal. The remote server has sent you a RST packet, which indicates an immediate dropping of the connection, rather than the usual handshake. This bypasses the normal half-closed state transition. I like this description: “Connection reset by peer” is the TCP/IP equivalent of slamming the phone back on the hook. It’s more polite than merely … Read more
It stores an exact, versioned dependency tree rather than using starred versioning like package.json itself (e.g. 1.0.*). This means you can guarantee the dependencies for other developers or prod releases, etc. It also has a mechanism to lock the tree but generally will regenerate if package.json changes. From the npm docs: package-lock.json is automatically generated for any operations where npm … Read more
I have to admit, mysqli_query() manual entry doesn’t contain a clean example on how to fetch multiple rows. May be it’s because the routine is so routine, known to PHP folks for decades: In case you want to print the column titles, you have to select your data into a nested array first and then use keys … Read more
No. The JSON is data only, and if you include a comment, then it will be data too. You could have a designated data element called “_comment” (or something) that should be ignored by apps that use the JSON data. You would probably be better having the comment in the processes that generates/receives the JSON, as they … Read more
DataFrame.iterrows is a generator which yields both the index and row (as a Series):