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Check if application is on its first run [duplicate]

... 123 The accepted answer doesn't differentiate between a first run and subsequent upgrades. Just se...
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ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

... edited Jul 14 '14 at 12:07 user123444555621 123k2323 gold badges101101 silver badges120120 bronze badges answered Dec 11 '13 at 0:48 ...
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What is the difference between 'my' and 'our' in Perl?

...ariables. You can see that in the following program: package Foo; our $x = 123; package Bar; say $x;. If you want to "declare" a package variable, you need to use use vars qw( $x );. our $x; declares a lexically-scoped variable that is aliased to the same-named variable in the package in which the o...
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How to split a long regular expression into multiple lines in JavaScript?

...omment!`; Outputs /I'm a special regex{3}/ Or what about multiline? '123hello' .match(regex` //so this is a regex //here I am matching some numbers (\d+) //Oh! See how I didn't need to double backslash that \d? ([a-z]{1,3}) /*note to self, this is ...
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How to set an “Accept:” header on Spring RestTemplate request?

...plate(); try { HttpHeaders headers = createHttpHeaders("fred","1234"); HttpEntity<String> entity = new HttpEntity<String>("parameters", headers); ResponseEntity<String> response = restTemplate.exchange(theUrl, HttpMethod.GET, entity, String.class); ...
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Why can I add named properties to an array as if it were an object?

... CaseyCasey 5,21233 gold badges2727 silver badges3535 bronze badges ...
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Find a Pull Request on Github where a commit was originally created

...l branches. They'll show up as remote-tracking branches like origin/pull/123. Once that is done you can use git describe with the --all and --contains options to show the first branch which has the referenced commit. However, this won't work if the commit you're looking for is actually a modif...
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Loop through all nested dictionary values?

... @Seanny123, Thanks for drawing my attention to this. Python 3 changes the picture in a couple of ways, in fact -- I'm going to rewrite this as a version that uses the new yield from syntax. – senderle ...
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How to check for an active Internet connection on iOS or macOS?

... 123 This used to be the correct answer, but it is now outdated as you should subscribe to notifica...
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Showing commits made directly to a branch, ignoring merges in Git

... 123 --no-merges Both parents have equal weight in many contexts in git. If you've always been con...