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How to prune local tracking branches that do not exist on remote anymore
...nd for a future git release that will do this? This command looks like my cat has been on my laptop
– Bron Davies
Sep 14 '16 at 20:02
12
...
Which are more performant, CTE or temporary tables?
....
Only 15 rows of the 1,000,000 randomly generated values match the predicate but the expensive table scan happens 16 times to locate these.
This would be a good candidate for materializing the intermediate result. The equivalent temp table rewrite took 25 seconds.
INSERT INTO #T
SELECT *,
...
Signed to unsigned conversion in C - is it always safe?
...t to the wrong parts within the answer ?
– Shmil The Cat
Sep 3 '14 at 10:27
For converting signed to unsigned, we add ...
Regular expression to match DNS hostname or IP Address?
...th a digit.
http://en.wikipedia.org/wiki/Hostname
The original specification of
hostnames in RFC
952,
mandated that labels could not start
with a digit or with a hyphen, and
must not end with a hyphen. However, a
subsequent specification (RFC
1123)
permitted hostname labels to s...
console.writeline and System.out.println
...err/.in and System.console():
System.console() returns null if your application is not run in a terminal (though you can handle this in your application)
System.console() provides methods for reading password without echoing characters
System.out and System.err use the default platform encoding, w...
show all tags in git log
... can see it in output of "git show <tag>" and also in output of "git cat-file -p <tag>", where <tag> is heavyweight tag, e.g. v1.6.3 in git.git repository),
and also is default name of tag reference (reference in "refs/tags/*" namespace) pointing to a tag object.
Note that the...
What is the difference between require() and library()?
... that drives the R-cognoscenti up the wall. The library is the directory location where the packages sit.
– IRTFM
Apr 8 '11 at 15:53
...
What is difference between CrudRepository and JpaRepository interfaces in Spring Data JPA?
... Spring Data core library ships with two base interfaces that expose a dedicated set of functionalities:
CrudRepository - CRUD methods
PagingAndSortingRepository - methods for pagination and sorting (extends CrudRepository)
Store-specific interfaces
The individual store modules (e.g. for JPA or...
Jump to matching XML tags in Vim
...st understand 'i'. cit changes the interior of the tag - just the content. cat change all of the tag - the contents and also the tag itself, both opening and closing.
– Edward
Aug 11 '13 at 22:03
...
Bash set +x without it being printed
... on) set -x ;;
off) set +x ;;
esac
}
alias xtrace='{ _xtrace $(cat); } 2>/dev/null <<<'
This allows you to enable and disable xtrace as in the following, where I'm logging how the arguments are assigned to variables:
xtrace on
ARG1=$1
ARG2=$2
xtrace off
And you get outpu...