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How to gracefully handle the SIGKILL signal in Java

...uts down in response to two kinds of events: The program exits normally, when the last non-daemon thread exits or when the exit (equivalently, System.exit) method is invoked, or The virtual machine is terminated in response to a user interrupt, such as typing ^C, or a system-wide event, su...
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How to post JSON to PHP with curl

I may be way off base, but I've been trying all afternoon to run the curl post command in this recess PHP framework tutorial. What I don't understand is how is PHP supposed to interpret my POST, it always comes up as an empty array. ...
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MySQL CONCAT returns NULL if any field contain NULL

...es: it returns the first non-NULL value parameter passed to it (or NULL if all parameters are NULL). By passing an empty string as the second parameter, you are guaranteeing it will not return NULL. – Jo. Mar 10 '17 at 17:03 ...
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How can I remove a key and its value from an associative array?

...oop, then you need to prepend an ampersand to your enumeration variable to allow write access. – FreeAsInBeer Jul 30 '12 at 21:20 1 ...
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What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?

... but not necessarily want to display it on screen. The pipeline will eventually write it to out-default if nothing else uses it first. Write-Host should be used when you want to do the opposite. [console]::WriteLine is essentially what Write-Host is doing behind the scenes. Run this demonstratio...
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No secret option provided to Rack::Session::Cookie warning?

... Update your rails gems as this is backported to all supported rails gems. note @henrik-n – shadowbq Feb 4 '13 at 11:14 add a comment ...
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Clear form field after select for jQuery UI Autocomplete

...it works around line 109 here. The code in there checks for false specifically: if ( false !== self._trigger( "select", event, { item: item } ) ) { self.element.val( item.value ); } share | imp...
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How to enable C++11 in Qt Creator?

...The problem was, I wasn't able to delete your duplicate/incomplete answer, all I could do was to downvote it. Now that you have edited it to make it more presentable, I am happy with just the downvote. – nurettin Aug 21 '14 at 12:55 ...
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test a file upload using rspec - rails

... You can use fixture_file_upload method to test file uploading: Put your test file in "{Rails.root}/spec/fixtures/files" directory before :each do @file = fixture_file_upload('files/test_lic.xml', 'text/xml') end it "can upload a license" do...
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Match multiline text using regular expression

...erwise they only match at the start/end of the entire string). Pattern.DOTALL or (?s) tells Java to allow the dot to match newline characters, too. Second, in your case, the regex fails because you're using the matches() method which expects the regex to match the entire string - which of course d...