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How to check the version before installing a package using apt-get?
...-server
redis-server:
Installed: (none)
Candidate: 2:2.8.4-2
Version table:
2:2.8.4-2 0
500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
apt-get install -s <package-name>
$ apt-get install -s redis-server
NOTE: This is only a simulation!
apt-g...
Can't subtract offset-naive and offset-aware datetimes
...imezone aware timestamptz field in PostgreSQL. When I pull data from the table, I then want to subtract the time right now so I can get it's age.
...
Store pictures as files or in the database for a web app?
...ed images (and all kinds of binary documents) as image columns in database tables.
The advantage of having files stored in the database is obviously that you do not end up with unreferenced files on the harddisk if a record is deleted, since synchronization between database (= meta data) and harddi...
Yellow fade effect with JQuery
...
I love this solution. Works great on table rows.
– Perry Tew
Dec 4 '12 at 19:29
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python list in sql query as parameter
... = [1,5,8]
l = tuple(l)
params = {'l': l}
cursor.execute('SELECT * FROM table where id in %(l)s',params)
I hope this helped !!!
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Drop unused factor levels in a subsetted data frame
...things up afterwards. Try the following before loading your data with read.table or read.csv:
options(stringsAsFactors = FALSE)
The disadvantage is that you're restricted to alphabetical ordering. (reorder is your friend for plots)
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Distinct by property of class with LINQ [duplicate]
...ryable<T> and try to DistinctBy it and thus query the whole God damn table... Isn't it error prone? Thanks again from your extremely quick response!
– gdoron is supporting Monica
Oct 17 '13 at 13:04
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Background color not showing in print preview
I am trying to print a page. In that page I have given a table a background color.
When I view the print preview in chrome its not taking on the background color property...
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock'
...refix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp
To set up base tables in another folder, or use a different user to run
mysqld, view the help for mysql_install_db:
mysql_install_db --help
and view the MySQL documentation:
* http://dev.mysql.com/doc/refman/5.5/en/mysql-install-db.h...
How to check if an object is an array?
...ome older browsers (e.x. IE7 and IE8). Source: kangax.github.io/es5-compat-table/#
– Wookie88
Jul 1 '13 at 10:16
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