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How to do a regular expression replace in MySQL?
...data sets, or with referential integrity in place: for remove the data and then insert it again you will have to turn referential integrity off, leaving in practice your database off also.
– Raul Luna
May 15 '14 at 15:50
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Delete/Reset all entries in Core Data?
...anager defaultManager] removeItemAtPath:storeURL.path error:&error];
Then, just add the persistent store back to ensure it is recreated properly.
The programmatic way for iterating through each entity is both slower and prone to error. The use for doing it that way is if you want to delete s...
HTML Form: Select-Option vs Datalist-Option
...tmr.com/datalist/
If using it with text input, as a type of autocomplete, then the question really is: Is it better to use a free-form text input, or a predetermined list of options? In that case I think the answer is a bit more obvious.
If we focus on the use of <datalist> as a list of opti...
Create a git patch from the uncommitted changes in the current working directory
...
If you haven't yet commited the changes, then:
git diff > mypatch.patch
But sometimes it happens that part of the stuff you're doing are new files that are untracked and won't be in your git diff output. So, one way to do a patch is to stage everything for a n...
Do sealed classes really offer performance Benefits?
...use it, and if you don't have the time or inclination to do this properly, then seal it as it's less likely to cause breaking changes in others' code in future. That's not nonsense at all, it's good common sense.
– Greg Beech
Nov 20 '09 at 9:58
...
How to show “if” condition on a sequence diagram?
... Visio in itself is not a UML modeling tool. If you want to use UML 2.0 then you need to find a good Visio Stencil that fully implements the 2.0 specifications. There are several free stencils available on the web, you might want to give some of them a try :) Here is one that looks good (did not ...
I need to securely store a username and password in Python, what are my options?
....
Just paste this code at the top of your script, change the saltSeed and then use store() retrieve() and require() in your code as needed:
from getpass import getpass
from pbkdf2 import PBKDF2
from Crypto.Cipher import AES
import os
import base64
import pickle
### Settings ###
saltSeed = 'mkhg...
Is there a way to keep Hudson / Jenkins configuration files in source control?
...esses if you use git and operate in a complex environment: 'If you use Git then you should use SSH key with default name. It's "id_rsa". SCM Sync does not have option to specify ssh key path. SCM Sync uses .ssh/id_rsa from home directory of the jenkins process owner.' from [wiki.jenkins-ci.org/displ...
How to test if string exists in file with Bash?
...name was found, 1 (false) if not, so:
if grep -Fxq "$FILENAME" my_list.txt
then
# code if found
else
# code if not found
fi
Explanation
Here are the relevant sections of the man page for grep:
grep [options] PATTERN [FILE...]
-F, --fixed-strings
Interpret PATTERN as a list...
Append lines to a file using a StreamWriter
...d Sep 5 '11 at 9:35
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