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Retrieving the last record in each group - MySQL
...2.name AND m1.id < m2.id)
WHERE m2.id IS NULL;
Regarding performance, one solution or the other can be better, depending on the nature of your data. So you should test both queries and use the one that is better at performance given your database.
For example, I have a copy of the StackOverflo...
How do I trim whitespace from a string?
...
Just one space, or all consecutive spaces? If the second, then strings already have a .strip() method:
>>> ' Hello '.strip()
'Hello'
>>> ' Hello'.strip()
'Hello'
>>> 'Bob has a cat'.strip()
'Bob has a ...
Resolve build errors due to circular dependency amongst classes
...nker errors in a C++ project due to some bad design decisions (made by someone else :) ) which lead to circular dependencies between C++ classes in different header files (can happen also in the same file) . But fortunately(?) this doesn't happen often enough for me to remember the solution to this...
Best practices: throwing exceptions from properties
...ic to decide where to inject exception catch statements.
As a side note, one should be aware that just because a property is not designed to throw an exception, that doesn't mean it won't; it could easily be calling code that does. Even the simple act of allocating a new object (like a string) cou...
Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()
... terminates
due to a failure during execution
prior to shutdown, a new one will take
its place if needed to execute
subsequent tasks. The threads in the
pool will exist until it is explicitly
shutdown.
newCachedThreadPool
Creates a thread pool that creates new
threads as needed,...
android start activity from service
..., but not working on xiaomi redmi note 7, can you help my why it's working one device and one is not?
– Amjad Omari
Mar 27 at 17:54
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show 4...
Using Custom Domains With IIS Express
...t;
</site>
If running MVC: make sure the applicationPool is set to one of the "Integrated" options (like "Clr2IntegratedAppPool").
Open your hosts file and add the line 127.0.0.1 dev.example.com.
► Start your application!
Some great advice from the comments:
You may need to run Visua...
encryption/decryption with multiple keys
...n you think that you might want to be able to read what you've sent to someone and to do so you need to be in the recipients list.
Command line
Here is how to do it through gpg command line (as described in David Segonds' answer):
gpg --encrypt \
--recipient alice@example.com \
--recipient bob@e...
CRON job to run on the last day of the month
... jobs.
If you still really want to run it on the last day of the month, one option is to simply detect if tomorrow is the first (either as part of your script, or in the crontab itself).
So, something like:
55 23 28-31 * * [[ "$(date --date=tomorrow +\%d)" == "01" ]] && myjob.sh
shoul...
How do I insert a linebreak where the cursor is without entering into insert mode in Vim?
...
'W' moves one character too far, it moves to the next character after the next whitespace.
– Greg Hewgill
Sep 23 '09 at 22:22
...