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Detect if Android device has Internet connection

...eck if there is an active Internet connection is to try and connect to a known server via http. public static boolean hasActiveInternetConnection(Context context) { if (isNetworkAvailable(context)) { try { HttpURLConnection urlc = (HttpURLConnection) (new URL("http://www.go...
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what exactly is device pixel ratio?

this is mentioned every article about mobile web, but nowhere I can found an explanation of what exactly does this attribute measure. Can anyone please elaborate what does queries like this check? ...
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Rails: update_attribute vs update_attributes

...nd(name.to_s + '=', value) 2616: save(false) 2617: end and now refer update_attributes and look at its code you get # File vendor/rails/activerecord/lib/active_record/base.rb, line 2621 2621: def update_attributes(attributes) 2622: self.attributes = attributes 26...
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How to access the local Django webserver from outside world

... @S.Lott: Oh thank you. I know, it was in my mind as wrote it but somehow didn't make it to the keyboard ;) – Felix Kling Feb 14 '10 at 12:07 ...
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/bin/sh: pushd: not found

...y my PS1 is (\u) \h:\w> but I just stripped it down to a generic string now for the answer. The prompt in DOS is also ending with > by default ($P$G IIRC), and I like that. – hlovdal Mar 4 '11 at 12:28 ...
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Junit - run set up method once

... JUnit 5 now has a @BeforeAll annotation: Denotes that the annotated method should be executed before all @Test methods in the current class or class hierarchy; analogous to JUnit 4’s @BeforeClass. Such methods must be stati...
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Android 4.1: How to check notifications are disabled for the application?

...d for the new notifications declares that you can't. Edit 2016 update: Now you can check it, as said in this Google I/O 2016 video. Use NotificationManagerCompat.areNotificationsEnabled(), from support library, to check if notifications are blocked on API 19+. The versions below API 19 will ret...
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Using getResources() in non-activity class

...be GCed due to this other static object. So yes, it can be dangerous, but knowing why it is dangerous I feel is important to mention here. – Dororo Feb 4 '14 at 9:09 ...
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How can I tell if one commit is a descendant of another commit?

...vuan 7.10 jessie) and 1.9.1 (Ubuntu 14.04 trusty) which are rather ancient now. It works even for Debian wheezy, if you do sudo apt-get install git/wheezy-backports. – Tino Feb 18 '18 at 12:12 ...
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How do I perform an insert and return inserted identity with Dapper?

... sure this works automatically in future dapper builds. Another option for now is select cast(SCOPE_IDENTITY() as int) - again, a bit ugly. I will fix this. – Marc Gravell♦ Nov 25 '11 at 14:26 ...