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How to detect user inactivity in Android
User start my app and logs in.
Selects Session Timeout to be 5 mins.
Does some operations on the app. (all in foreground)
Now User bring Myapp to background and starts some other app.
----> Count down timer starts and logs out user after 5 mins
OR user turns the screen OFF.
----> Cou...
How do I inspect the view hierarchy in iOS?
Is there a GUI tool that inspects the view hierarchy of an iOS app? I'm thinking about Webkit's web inspector or similar tools. I'm looking to debug layout issues, like views having the wrong position or size, or a child not being properly contained in its parent. Currently I have to add asserts tha...
How to split data into training/testing sets using sample function
I've just started using R and I'm not sure how to incorporate my dataset with the following sample code:
23 Answers
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Python - Create a list with initial capacity
...idsv's point was that we're just assuming 'int * list' doesn't just append to the list item by item. That assumption is probably valid, but haridsv's point was that we should check that. If it wasn't valid, that would explain why the two functions you showed take almost identical times - because und...
What's wrong with nullable columns in composite primary keys?
...or uniquely identifying rows. This is done by comparing all parts of a key to the input.
Per definition, NULL cannot be part of a successful comparison. Even a comparison to itself (NULL = NULL) will fail. This means a key containing NULL would not work.
Additonally, NULL is allowed in a foreign ...
How do I repeat an edit on multiple lines in Vim?
...a i , ESC j h q
use with:
@ a
Explanation: q a starts recording a macro to register a, q ends recording. There are registers a to z available for this.
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How do you reverse a string in place in JavaScript?
...ou reverse a string in place (or in-place) in JavaScript when it is passed to a function with a return statement, without using built-in functions ( .reverse() , .charAt() etc.)?
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Finding duplicates in O(n) time and O(1) space
Input: Given an array of n elements which contains elements from 0 to n-1, with any of these numbers appearing any number of times.
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Proper MIME type for OTF fonts
...nt suggestions for what the proper MIME type for a font is, but I have yet to try any MIME type that rids me of a Chrome warning such as the following:
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How disable Copy, Cut, Select, Select All in UITextView
...is only read only. I do not require this functionality. Please tell me how to disable this feature.
31 Answers
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