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How to copy an object in Objective-C

...deep, logical copy. In this, we make a copy of the object, but without actually doing it bit by bit - we want an object that behaves the same for all intents and purposes, but isn't (necessarily) a memory-identical clone of the original - the Objective C manual calls such an object "functionally ind...
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Read url to string in few lines of java code

... Just don't forget you need to call Scanner#close() later. – Marcelo Dec 21 '12 at 3:55 2 ...
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Rename a git submodule

...t add newpath git submodule sync Note: this approach does not update the index and .gitmodules properly in 2018 versions of GIT. Note: You may be able to now just do git mv oldpath newpath now, as pointed out in VonC's answer. (Ensure you are using the latest version of git) ...
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Easy idiomatic way to define Ordering for a simple case class

...[...] to Ordered[TupleN[...]] provided an implicit Ordering[TN] exists for all elements T1, ..., TN of the tuple, which should always be the case because it makes no sense to sort on a data type with no Ordering. The implicit ordering for Tuples is your go-to for any sorting scenario involving a co...
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Is there a unique Android device ID?

...reserved or not 'null'. (see http://developer.android.com/about/dashboards/index.html) If all else fails: If all else fails, if the user does have lower than API 9 (lower than Gingerbread), has reset their device or 'Secure.ANDROID_ID' returns 'null', then simply the ID returned will be solely bas...
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How do I use Ruby for shell scripting?

...r, options) rm(list, options) rm_r(list, options) rm_rf(list, options) install(src, dest, mode = <src's>, options) chmod(mode, list, options) chmod_R(mode, list, options) chown(user, group, list, options) chown_R(user, group, list, options) touch(list, options) Which is pretty nice ...
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Print in one line dynamically

... From http://docs.python.org/reference/simple_stmts.html#print: > A '\n' character is written at the end, unless the print statement ends with a comma. This is the only action if the statement contains just the keyword print. – ewall ...
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Datepicker: How to popup datepicker when click on edittext

...e: <EditText android:id="@+id/Birthday" custom:font="@string/font_avenir_book" android:clickable="true" android:editable="false" android:hint="@string/birthday"/> Now in Java File: final Calendar myCalendar = Calendar.getInstance(); EditText edittext= (EditText) findViewByI...
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TypeError: Missing 1 required positional argument: 'self'

...p.getPumps() Small example - >>> class TestClass: def __init__(self): print("in init") def testFunc(self): print("in Test Func") >>> testInstance = TestClass() in init >>> testInstance.testFunc() in Test Func ...
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How to test android referral tracking?

...ust run in a terminal: adb shell am broadcast -a com.android.vending.INSTALL_REFERRER -n <your.package>/.<path.up.until.your.BroadcastReceiver> --es "referrer" "utm_source=test_source\&utm_medium=test_medium\&utm_term=test_term\&utm_content=test_content\&utm_campaign=te...