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How to skip “Loose Object” popup when running 'git gui'
...log. I found the hint_gc procedure which does it and the place where it is called. At the same time I noticed that late 2011 there was added a configuration option for disabling the dialog. This change (part of git-gui 0.16.0) was merged to Git's mainline on 2011-12-14.
So if you use Git v1.7.9 or ...
How to list all the available keyspaces in Cassandra?
...ry the schema_keyspaces table in the system keyspace. There's also a table called schema_columnfamilies which contains information about all tables.
The DESCRIBE and SHOW commands only work in cqlsh and cassandra-cli.
share...
“new” keyword in Scala
...", as in this thread
Creator applications allow to use simple function call syntax to create instances
of a class, even if there is no apply method implemented.
Example:
class StringBuilder(s: String) {
def this() = this(s)
}
StringBuilder("abc") // same as new StringBuilder("abc"...
Change key pair for ec2 instance
... post:
Stop the running EC2 instance
Detach its /dev/xvda1 volume (let's call it volume A) - see here
Start new t1.micro EC2 instance, using my new key pair. Make sure you create it in the same subnet, otherwise you will have to terminate the instance and create it again. - see here
Attach volume ...
Git rebase merge conflict cannot continue
...nescapable loop.
Update the msgnum file's value as the first thing in call_merge.
This also avoids an "Already applied" message when skipping a commit.
There is no visible change for the other contexts in which call_merge is invoked, as the
msgnum file's value remains unchanged in those s...
Why do we copy then move?
...the assumption that moves are cheap (ignoring SSO here), they can be practically disregarded when considering the overall efficiency of this design. If we do so, we have one copy for lvalues (as we would have if we accepted an lvalue reference to const) and no copies for rvalues (while we would stil...
How do I search for an object by its ObjectId in the mongo console?
...Make sure the collection name is correct (case matters) and that the ObjectId is exact.
Documentation is here
> db.test.insert({x: 1})
> db.test.find() // no criteria
{ "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 }
> db.test....
How to get the current taxonomy term ID (not the slug) in WordPress?
...hp page in my WordPress theme folder. I would like to get the current term id for a function.
How can I get this?
8 Answer...
How to use GROUP_CONCAT in a CONCAT in MySQL
...
select id, group_concat(`Name` separator ',') as `ColumnName`
from
(
select
id,
concat(`Name`, ':', group_concat(`Value` separator ',')) as `Name`
from mytbl
group by
id,
`Name`
) tbl
group by id;
You can...
Difference between a Postback and a Callback
I keep on hearing this words ' callback ' and ' postback ' tossed around.
What is the difference between two ?
6 Answers...