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How to read contacts on Android 2.0

... First, ensure that you have added <uses-permission android:name="android.permission.READ_CONTACTS"/> to your AndroidManifest.xml file, then you can loop through your phone contacts like this: Cursor cursor = getContentResolv...
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How does HTTP file upload work?

When I submit a simple form like this with a file attached: 5 Answers 5 ...
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What does enctype='multipart/form-data' mean?

What does enctype='multipart/form-data' mean in an HTML form and when should we use it? 9 Answers ...
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How to parse/format dates with LocalDateTime? (Java 8)

... Parsing date and time To create a LocalDateTime object from a string you can use the static LocalDateTime.parse() method. It takes a string and a DateTimeFormatter as parameter. The DateTimeFormatter is used to specify the date/time pattern. String str = "1986-04-08 12:30"; DateTimeFormatter fo...
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What is polymorphism, what is it for, and how is it used?

What is polymorphism, what is it for, and how is it used? 28 Answers 28 ...
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Using std Namespace

There seem to be different views on using 'using' with respect to the std namespace. 15 Answers ...
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Quickly find whether a value is present in a C array?

...an embedded application with a time-critical ISR that needs to iterate through an array of size 256 (preferably 1024, but 256 is the minimum) and check if a value matches the arrays contents. A bool will be set to true is this is the case. ...
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What's the difference between deadlock and livelock?

... Taken from http://en.wikipedia.org/wiki/Deadlock: In concurrent computing, a deadlock is a state in which each member of a group of actions, is waiting for some other member to release a lock A livelock is similar to a deadlock, except that the states of the processes involved in t...
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What characters are allowed in an email address?

I'm not asking about full email validation. 17 Answers 17 ...
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What is in your .vimrc? [closed]

Vi and Vim allow for really awesome customization, typically stored inside a .vimrc file. Typical features for a programmer would be syntax highlighting, smart indenting and so on. ...