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How to make child process die after parent exits?

Suppose I have a process which spawns exactly one child process. Now when the parent process exits for whatever reason (normally or abnormally, by kill, ^C, assert failure or anything else) I want the child process to die. How to do that correctly? ...
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Removing duplicates from a list of lists

I have a list of lists in Python: 11 Answers 11 ...
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How can I position my div at the bottom of its container?

Given the following HTML: 24 Answers 24 ...
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This app won't run unless you update Google Play Services (via Bazaar)

I'm testing out the new Google Maps API V2 for Android, and I'm getting this message when the app launches: 12 Answers ...
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Spark java.lang.OutOfMemoryError: Java heap space

My cluster: 1 master, 11 slaves, each node has 6 GB memory. 12 Answers 12 ...
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Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?

I was wondering if there exists a way to run an untrusted C program under a sandbox in Linux. Something that would prevent the program from opening files, or network connections, or forking, exec, etc? ...
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How to get a time zone from a location using latitude and longitude coordinates?

There are too many questions on StackOverflow about resolving a time zone from a location. This community wiki is an attempt at consolidating all of the valid responses. ...
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MySQL: Large VARCHAR vs. TEXT?

I've got a messages table in MySQL which records messages between users. Apart from the typical ids and message types (all integer types) I need to save the actual message text as either VARCHAR or TEXT. I'm setting a front-end limit of 3000 characters which means the messages would never be inserte...
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F# changes to OCaml [closed]

F# is derived from OCaml, but what major items are missing or added? Specifically I'm curious as to whether the resources available for learning OCaml are also useful to someone who wants to learn F#. ...
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When and why I should use session_regenerate_id()?

Why and when should I use the session_regenerate_id() function in php? Should I always use it after I use the session_start() ? I've read that I have to use it to prevent session fixation, is this the only reason? ...