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How to implement an STL-style iterator and avoid common pitfalls?

I made a collection for which I want to provide an STL-style, random-access iterator. I was searching around for an example implementation of an iterator but I didn't find any. I know about the need for const overloads of [] and * operators. What are the requirements for an iterator to be "STL-s...
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Multi-line EditText with Done action button

Is it possible to have an EditText widget with android:inputType="textMultiLine" set, and android:imeOptions="actionDone" at the same time? ...
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How to delete a file from SD card?

...e to delete all inner childs.See my answer below.. – AndroidGeek May 15 '14 at 7:56 2 Unfortunate...
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Change Screen Orientation programmatically using a Button

... Yes it is implementable! ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); ActivityInfo.SCREEN_ORIENTATION_PORTRAIT setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); ActivityInfo http://developer.and...
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How to find out the number of CPUs using python

...is not in use), multiprocessing.cpu_count() is the way to go in Python 2.6 and newer. The following method falls back to a couple of alternative methods in older versions of Python: import os import re import subprocess def available_cpu_count(): """ Number of available virtual or physical CP...
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Random number from a range in a Bash Script

I need to generate a random port number between 2000-65000 from a shell script. The problem is $RANDOM is a 15-bit number, so I'm stuck! ...
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How to list files in a directory in a C program?

... on terminal by a C program? Maybe I can use exec function to run find command but I want file name as a string to send client program. How can I do this? ...
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How to inflate one view with a layout

... I get an error: 02-25 22:21:19.324: ERROR/AndroidRuntime(865): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first. – Michal Dymel Feb 25 '...
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How to remove all null elements from a ArrayList or String Array?

... For Java 8 or later, see @MarcG's answer below. – Andy Thomas Feb 6 '16 at 15:16 2 @Hemanth Ca...
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How to plot two columns of a pandas data frame using points?

...e of a column of Timestamp values with millisecond precision. In trying to convert the objects to datetime64 type, I also discovered a nasty issue: < Pandas gives incorrect result when asking if Timestamp column values have attr astype >. ...