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Is there a way to get the source code from an APK file?

The hard drive on my laptop just crashed and I lost all the source code for an app that I have been working on for the past two months. All I have is the APK file that is stored in my email from when I sent it to a friend. ...
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Split string into array of character strings

... This is indeed a regex-expression, called a negative lookahead. Checkout the documentation here: docs.oracle.com/javase/6/docs/api/java/util/regex/… – Erwin May 28 '14 at 8:51 ...
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How do I clear/delete the current line in terminal?

... The line deleted by Ctrl-U is recallable with Ctrl-Y, too. – keks Dec 4 '12 at 10:59 67 ...
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PHP json_decode() returns NULL with valid JSON?

...ters since I started the application and there were no problems before. Locally, the JSON decoding works perfectly. On my server, it doesn't. And I can't call json_last_error() because it's PHP 5.2.9. That function appears on PHP 5.3.0. – Joel A. Villarreal Bertoldi ...
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Summarizing multiple columns with dplyr? [duplicate]

... The dplyr package contains summarise_all for this aim: library(dplyr) df %>% group_by(grp) %>% summarise_all(list(mean)) #> # A tibble: 3 x 5 #> grp a b c d #> <int> <dbl> <dbl> <dbl> <dbl> #>...
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PHP: How to remove all non printable characters in a string?

...to remove other chars... If you're dealing with Unicode, there are potentially many non-printing elements, but let's consider a simple one: NO-BREAK SPACE (U+00A0) In a UTF-8 string, this would be encoded as 0xC2A0. You could look for and remove that specific sequence, but with the /u modifier in ...
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Post data to JsonP

Is it possible to post data to JsonP? Or does all data have to be passed in the querystring as a GET request? 7 Answers ...
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SSL Error: CERT_UNTRUSTED while using npm command

I am trying to install express framework using npm command but getting following error. 7 Answers ...
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Easy way to print Perl array? (with a little formatting)

... Or, if you want to be really dirty: {local $,=', ';print @array}. – musiKk Apr 21 '11 at 7:57 10 ...
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Unable to install gem - Failed to build gem native extension - cannot load such file — mkmf (LoadErr

...ing so i had to run open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg That didnt work for me at first because the version of CommandLineTools i had installed did not have the "Packages" folder. So i uninstalled and reinstalled like this: rm -rf /Library/Devel...