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Number of days between two dates in Joda-Time

How do I find the difference in Days between two Joda-Time DateTime instances? With ‘difference in days’ I mean if start is on Monday and end is on Tuesday I expect a return value of 1 regardless of the hour/minute/seconds of the start and end dates. ...
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Read only file system on Android

I recently rooted my Droid X and everything seems to be working perfectly. I made some changes to build.prop and when I do adb push build.prop /system/ I get the following error: failed to copy 'c:\build.prop' to '/system//build.prop': Read-only file system . ...
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Reverse of JSON.stringify?

I'm stringyfing an object like {'foo': 'bar'} 8 Answers 8 ...
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Explain which gitignore rule is ignoring my file

Is there any way to see why some file is getting ignored by git (i.e. which rule in a .gitignore file is causing the file to be ignored)? ...
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How to get current date time in milliseconds in android [duplicate]

i am trying to save my file with name as current date and time in milliseconds. and while reading file i want to read latest one.Here is the code ...
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What is an NP-complete in computer science?

... NP stands for Non-deterministic Polynomial time. This means that the problem can be solved in Polynomial time using a Non-deterministic Turing machine (like a regular Turing machine but also including a non-deterministic "choice" function). Basically, a solution has ...
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How do you print out a stack trace to the console/log in Cocoa?

I'd like to log the call trace during certain points, like failed assertions, or uncaught exceptions. 6 Answers ...
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How to get a list of column names on Sqlite3 database?

I want to migrate my iPhone app to a new database version. Since I don't have some version saved, I need to check if certain column names exist. ...
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How to split a string in shell and get the last field

Suppose I have the string 1:2:3:4:5 and I want to get its last field ( 5 in this case). How do I do that using Bash? I tried cut , but I don't know how to specify the last field with -f . ...
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DateTime.Now vs. DateTime.UtcNow

...s work. I know the second one is universal and basically doesn't deal with time zones, but can someone explain in detail how they work and which one should be used in what scenario? ...