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Purge or recreate a Ruby on Rails database
...or Tracks GTD app db:migrate didn't work. I had to do db:reset when moving from Sqlite3 to Postgres.
– labyrinth
Mar 29 '12 at 4:06
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Getting name of the class from an instance
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NSStringFromClass([instance class]) should do the trick.
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Copy files from one directory into an existing directory
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If you want to copy something from one directory into the current directory, do this:
cp dir1/* .
This assumes you're not trying to copy hidden files.
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Does python have an equivalent to Java Class.forName()?
...that holds the class, which required that we first extract the module name from the fully qualified name. Then we import the module:
m = __import__( module )
In this case, m will only refer to the top level module,
For example, if your class lives in foo.baz module, then m will be the module fo...
ReactJS state vs prop
...allbacks down to the children that need to modify your data, and call them from the child component.
Modifying this.props or this.state directly is not a good idea, because React will not be able to pick up on the changes. That's because React does a shallow comparison of your post prop to determin...
How to create a file in Android?
How to create a file, write data into it and read data from it on Android? If possible provide a code snippet.
4 Answers
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Pythonic way to find maximum value and its index in a list?
...iding external dependencies can be worthwhile in some cases, but an import from the standard library is a non-issue.
– Sven Marnach
Aug 7 '17 at 11:14
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How to convert from System.Enum to base integer?
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Is not working if underlying type differs from int
– Alex Zhukovskiy
Dec 23 '16 at 13:34
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How do I return early from a rake task?
... at the beginning, if one of the checks fails I would like to return early from the rake task, I don't want to execute any of the remaining code.
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Best way to make Django's login_required the default
... may be your best bet. I've used this piece of code in the past, modified from a snippet found elsewhere:
import re
from django.conf import settings
from django.contrib.auth.decorators import login_required
class RequireLoginMiddleware(object):
"""
Middleware component that wraps the lo...