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JPA OneToMany not deleting child
... some search/ reading before i asked, just wanting to be save). somehow i start regretting the decision to use JPA API and nit Hibernate directly .. I will try Chandra Patni pointer and use the hibernate delete_orphan cascade type.
– bert
Jan 6 '10 at 8:12
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Choosing between qplot() and ggplot() in ggplot2 [closed]
I'm starting to use the great ggplot2 package for plotting in R, and one of the first things I ask myself before each plot is "well, will I use qplot or ggplot ?"
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Print number of keys in Redis
...raction of them matches the pattern.
Example in python; counting all keys starting with prefix_:
import redis
r = redis.StrictRedis(host = 'localhost', port=6379)
iter=1000
print 'Approximately', r.dbsize() * float(sum([r.randomkey().startswith('prefix_') for i in xrange(iter)])) / iter
Even ite...
How do I copy folder with files to another folder in Unix/Linux? [closed]
... long file paths when typing in the terminal, you can hit Tab after you've started typing the path and you will either be presented with choices, or it will insert the remaining part of the path.
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Can't stop rails server
...y in step 1.
OR
Remove file(server.pid) under Rails.root/tmp/pids/ and restart server.
OR
open app in another port by using command:
rails s -p 3001
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What does f+++++++++ mean in rsync logs?
...already transferred, if they were not changed in the meantime. But it will start checking all the files again from the beginning to find out, as it is not aware that it had been interrupted.
2 - Each character is a code that can be translated if you read the section for -i, --itemize-changes in man...
AttributeError: 'module' object has no attribute 'tests'
...going on because I fixed the import within my test file and sure enough it started working.
To validate your test case just try import the test case file in python console.
Example:
from project.apps.app1.tests import *
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How can I grep for a string that begins with a dash/hyphen?
I want to grep for the string that starts with a dash/hyphen, like -X , in a file, but it's confusing this as a command line argument.
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How to connect to my http://localhost web server from Android Emulator
... command, shows net as 172.17.100.15/255.255.255.0
Begin pinging addresses starting at 172.17.100.1, got a hit on `172.17.100.2'. Not sure if a firewall would interfere but it didn't in my case
Maybe this can help someone else figure it out for other emulators.
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Loading a properties file from Java package
...va/lang/String/foo.txt on the classpath.
Using an absolute path (one that starts with '/') means that the current package is ignored.
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