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How to configure an existing git repo to be shared by a UNIX group
...rm this also helps if you're in a mess because someone has done a git pull etc. as root rather than as www-data or whatever the owner is and as a result you get error: insufficient permission for adding an object to repository database .git/objects. I thought I'd fixed the ownership of all files/di...
Python argparse mutual exclusive group
...y of potential conflicts (a can't occur with b or c, b can't occur with a, etc), and then raises an error if a conflict arises.
Without that argparse patch, I think your best choice is to test the namespace produced by parse_args yourself (e.g. if both a and b have nondefault values), and raise you...
General suggestions for debugging in R
...nce errors often occur with unstable/wonky data sets (complete separation, etc.), and the window between 'converges just fine' and 'non-convergent but can't be fixed by increasing number of iterations -- needs some more drastic change' is often narrow
– Ben Bolker
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What's the best way of structuring data on firebase?
...-time nature of the data (it's constantly changing, sharding, reconciling, etc, which requires a simpler internal model to keep the synchronized clients in check)
A simple example will probably set you in the right state of mind, so here goes:
/users/uid
/users/uid/email
/users/uid/messages
/users...
Why must a lambda expression be cast when supplied as a plain Delegate parameter
...te separate classes like Lambda, Lambda<S, T>, Lambda<S, T, U> etc.
Advantage of this I see over the original approach:
One less type specification (only the formal parameter needs to be specified).
Which gives you the freedom to use it against any Func<int, T>, not just when T...
Detect if the app was launched/opened from a push notification
...tually becomes active, which is the same lifecycle method in all cases.
Sketch of our solution
Here are the main components of our solution:
Store a notificationUserInfo instance variable on the AppDelegate.
Set notificationUserInfo = nil in both applicationWillEnterForeground and didFinishLaunc...
Cleanest and most Pythonic way to get tomorrow's date?
...etter way than to add one to the day, handle days at the end of the month, etc.
4 Answers
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WPF Application that only has a tray icon
...plication that starts minimized to tray. The idea is that it periodically fetches an RSS Feed and creates a Toaster-Popup when there are new feeds.
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Why should Java ThreadLocal variables be static
...omething like objects that are scoped to a User Conversation, Web Request, etc. You don't want them also sub-scoped to the instance of the class.
One web request => one Persistence session.
Not one web request => one persistence session per object.
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Confusion: @NotNull vs. @Column(nullable = false) with JPA and Hibernate
...ich ORM(s) recognize JSR 303 annotations like @NotNull, @Size, @Min, @Max, etc., and translate those into database constraints.
– Ryan Stewart
Sep 16 '11 at 3:30
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