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The method name would be add_category in well-written ruby. But that doesn't exist, because colours aren't a concept in IMAP. Flags do exist, and I know some clients use colours to represent flags... so the code you're probably looking for is something along the lines of

imap.uid_store(uids, "+flags", [:Blue])

You have to define Blue, of course. Or Important, Flagged or something. Flagged is used by many clients for vaguely important messages.

First of all, make sure you are using a MinGW gcc and a MinGW ruby so there aren't any toolchain compatibility issues. Run which gcc and which ruby in your shell and make sure both commands return a filename in /mingw64 or both return a filename in /mingw32.

Secondly, make sure you compile your DLL correctly. You sould remove the main function because DLLs shouldn't have a main function. I think the correct command is this:

Try using XPathEvaluator.evaluate()

https://developer.mozilla.org/en-US/docs/Web/API/XPathEvaluator/evaluate

The problem is an update/upgrade of Mac OS itself. Ruby and Python are most likely depending on an library which was already installed on an older version of Mac OS (like for e.g. 11.1.X). The update breaks the ad-hoc signing which homebrew applies t for e.g. executables and libraries.

In order to solve this I did the following:

1. Launch the Console app and have a look in Crash Reports there should be an entry for the app which is tried to be launched. For e.g. Python.
2. Within the entry there was the following hint:

This is a RubyMine bug. Nothing we can fix on the Cucumber end.

You can either consult a non-recommended monkeypatch / hack. Or downgrade to an early version of Cucumber5.

See https://youtrack.jetbrains.com/issue/RUBY-27294 for more information, including other possible workarounds and a time-frame for the fix from Jetbrains.

Luke - Cucumber Ruby committer.

I solved with this

I had a conversation with the author of Sequel. It seems, that the puma config and the connection-approach is correct.

It seems, the DB-connections are dropped by another network-part (i.e. tcp-timeout, firewall, ...).

In such a case this is the expected behavior of Sequel:

The application lost connection to the database. When this happens, a DatabaseDisconnectError is raised and Sequel removes the connection from the connection pool. New connection will be created as needed up to the maximum pool size.

The best way to solve the issue, is to fix the reason for the connection-dropping (change setup [DB, server]). A pragmatic solution could be putting DB and application on same server.

If that is not possible, there's a Sequel-extension, which could be a workaround: https://sequel.jeremyevans.net/rdoc-plugins/files/lib/sequel/extensions/connection_validator_rb.html

Rails/ActiveSupport has a to_query method which will do what you want.

Ruby allows hash braces to be omitted in a number of places. Most commonly this is seen in method calls: