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Difference between __getattr__ vs __getattribute__
...t is the difference between old style and new style classes in Python? for details.
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Replace Fragment inside a ViewPager
...n on this page.
So here's my code for a ViewPager with 4 ListViews with a detail view shown in the ViewPager when the user clicks a row, and with the back button working. I tried to include just the relevant code for the sake of brevity so leave a comment if you want the full app uploaded to GitHub...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
... echo "Myscript is already running." >&2
exit 1
fi
For all details, see the excellent BashFAQ: http://mywiki.wooledge.org/BashFAQ/045
If you want to take care of stale locks, fuser(1) comes in handy. The only downside here is that the operation takes about a second, so it isn't ins...
Why doesn't Java Map extend Collection?
...d as a HashMap, not the other way around. This is purely an implementation detail but is interesting nonetheless.
The main reason for entrySet() to exist is to simplify traversal so you don't have to traverse the keys and then do a lookup of the key. Don't take it as prima facie evidence that a Map...
How do ACID and database transactions work?
...e, then all unfinished committed transactions may be replayed.
For more details about Durability and the Redo Log, check out this article.
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Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
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That will pre-load all memberships and lazy-loading will not be used. For details see Loading Related Entities article on MSDN.
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use Winmerge inside of Git to file diff
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Update June 2015, 6 years later:
As detailed in "git mergetool winmerge", a simple git config diff.tool winmerge will be enough.
Git 2.5+ (Q2, 2015) is now aware of Winmerge as a diff or merge tool!
Original answer (2009-2012)
(msysgit, 1.6.5, DOS session)...
How to programmatically create and read WEP/EAP WiFi configurations in Android?
...saying cannot find the symbols eap, phase, client_cert and so on. A little detailed investigation tells us EnterpriseFieldis private inside WiFiConfiguration class and all the symbols we cannot find are of the type EnterpriseField. Well we've hit a roadblock, We need these fields for reading/saving ...
Delete an element from a dictionary
... They both mutate the original dictionary, so you need to make a copy (see details below).
And both of them will raise a KeyError if the key you're providing to them is not present in the dictionary:
key_to_remove = "c"
d = {"a": 1, "b": 2}
del d[key_to_remove] # Raises `KeyError: 'c'`
and
key...
What are the differences between git branch, fork, fetch, merge, rebase and clone?
... are two main approaches to collaboration in Git repositories. The first, detailed above, is directly via branches that people pull and push from/to. These collaborators have their SSH keys registered with the remote repository. This will let them push directly to that repository. The downside i...