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How and where are Annotations used in Java?
...eflection and meta-programming.
An annotation needs to be interpreted in one way or another to be useful. Annotations can be interpreted at development-time by the IDE or the compiler, or at run-time by a framework.
Annotation processing is a very powerful mechanism and can be used in a lot of d...
Continuous Integration for Ruby on Rails? [closed]
...ifacts where others can see them.
BigTuna seems to be a CruiseControl.rb clone without the (already minimal) community support.
Bamboo looks really neat if you use JIRA and BitBucket, but we use neither. It does deploys but we already have those set up in Capistrano.
The Choice
We went with Jenki...
How do you create a remote Git branch?
...name> is typically origin, the name which git gives to the remote you cloned from. Your colleagues would then just pull that branch, and it's automatically created locally.
Note however that formally, the format is:
git push <remote-name> <local-branch-name>:<remote-branch-name&g...
When should I use uuid.uuid1() vs. uuid.uuid4() in python?
...
One instance when you may consider uuid1() rather than uuid4() is when UUIDs are produced on separate machines, for example when multiple online transactions are process on several machines for scaling purposes.
In such a si...
error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' — Miss
...t, but it will not find it since it deviates from where the server created one. So, Unless you care where the socket resides, just changing the my.cnf to match should work.
Then, stop the mysqld process. How you do this will vary by system.
If you're super user in the linux system, try one of ...
How to permanently set $PATH on Linux/Unix? [closed]
...ing JAVA_HOME. The configuration can be split into multiple files, usually one per each tool (Java, Go, NodeJS). Used by SystemD that by design do not pass those values to user login shells.
/etc/xprofile Shell script executed while starting X Window System session. This is run for every user that ...
Find row where values for column is maximal in a pandas DataFrame
...ional location of the max row (in this case, position 9).
This is exactly one of those nasty kinds of bug-prone behaviors in dynamically typed languages that makes this sort of thing so unfortunate, and worth beating a dead horse over. If you are writing systems code and your system suddenly gets u...
How can I add a key/value pair to a JavaScript object?
...() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.
Live example
var obj = {key1: "value1", key2: "value2"};
Object.assign(obj, {key3: "value3"});
document.body.innerHTML = JSON.stringify(ob...
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...'re dataset has only two columns but you're trying to get a value from 3rd one (indices are always 0-based).
Please note that this behavior is shared with most IDataReader implementations (SqlDataReader, OleDbDataReader and so on).
You can get the same exception also if you use the IDataReader ...
Calendar Recurring/Repeating Events - Best Storage Method
...uesday and every week starting on a Thursday.
Assuming I have two tables, one called events like this:
ID NAME
1 Sample Event
2 Another Event
And a table called events_meta like this:
ID event_id meta_key meta_value
1 1 repeat_start 1299132000
...