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Usage of forceLayout(), requestLayout() and invalidate()

... I often see requestLayout being called directly after invalidate is called, I even see that happening in Android source code for things like TextView, but according to this diagram doing so is redundant, right? So is there any purpose for doing that? ...
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What's a concise way to check that environment variables are set in a Unix shell script?

...is therefore in the Korn Shell, and in the POSIX shells, including specifically Bash. It is usually documented in the shell's man page in a section called Parameter Expansion. For example, the bash manual says: ${parameter:?word} Display Error if Null or Unset. If parameter is null or unset, the...
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Developing cross platform mobile application [closed]

...s but let me expand a bit: I think that cross-platform tools have historically always been also-rans because such tools have the wrong philosophical focus. All the selling points for cross-plaform tools are the benefits they bring to developers. They are sold on the idea that they allow the devel...
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How to convert Linux cron jobs to “the Amazon way”?

...ds and no other cron worker will execute the job. The lock will automatically be released after the TTL has expired. This is conceptually very similar to the SQS option we discussed yesterday. Also see; Google's chubby http://static.googleusercontent.com/external_content/untrusted_dlcp...
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How to kill a child process after a given timeout in Bash?

I have a bash script that launches a child process that crashes (actually, hangs) from time to time and with no apparent reason (closed source, so there isn't much I can do about it). As a result, I would like to be able to launch this process for a given amount of time, and kill it if it did not re...
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Only get hash value using md5sum (without filename)

... Awesome. Just one question, I know the question is tagged bash, but can you tell me if array is a bash only feature or some shell standard? – jyz Nov 5 '14 at 10:37 ...
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Worst security hole you've seen? [closed]

... Would have loved to see the face of the customer who actually got delivered the .1 harddrives he paid for. – relet Jul 16 '10 at 12:47  |...
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Why should I care that Java doesn't have reified generics?

...esn't have reified generics but, when pushed, the candidate couldn't actually tell me the sort of things that he could have achieved were they there. ...
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Text overflow ellipsis on two lines

...lt;div class="ellipsis"> <div> <p> Call me Ishmael. Some years ago – never mind how long precisely – having little or no money in my purse, and nothing particular to interest me on shore, I thought I would sail about a little and see...
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Why Response.Redirect causes System.Threading.ThreadAbortException?

... The correct pattern is to call the Redirect overload with endResponse=false and make a call to tell the IIS pipeline that it should advance directly to the EndRequest stage once you return control: Response.Redirect(url, false); Context.ApplicationIns...