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Git: Merge a Remote branch locally
...g-in") and then do the following:
git merge origin/branch-i-want-to-merge-from
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How to use WeakReference in Java and Android development?
...ence to an object, but you don't want that reference to protect the object from the garbage collector. A classic example is a cache that you want to be garbage collected when memory usage gets too high (often implemented with WeakHashMap).
Be sure to check out SoftReference and PhantomReference as...
how to implement a pop up dialog box in iOS
...ne of the Modal Presentation Styles.
See also
Presenting View Controllers from Other View Controllers
Modal Contexts
Popover (show me an example)
A Popover is a view that appears when a user taps on something and disappears when tapping off it. It has an arrow showing the control or location from...
Programmatically set the initial view controller using Storyboards
... storyboard to a different view depending on some condition which may vary from launch to launch.
22 Answers
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Python: Get the first character of the first string in a list?
How would I get the first character from the first string in a list in Python?
4 Answers
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Sort a list of tuples by 2nd item (integer value) [duplicate]
...hould be a function that identifies how to retrieve the comparable element from your data structure. In your case, it is the second element of the tuple, so we access [1].
For optimization, see jamylak's response using itemgetter(1), which is essentially a faster version of lambda x: x[1].
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Is it possible to create a File object from InputStream
Is there any way to create a java.io.File object from an java.io.InputStream ?
7 Answers
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biggest integer that can be stored in a double
...iplied by 2exponent − 52. So with exponent 52 you can store all values from 252 through to 253 − 1. Then with exponent 53, the next number you can store after 253 is 253 + 1 × 253 − 52. So loss of precision first occurs with 253 + 1.
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What is the 'new' keyword in JavaScript?
...ObjMaker.prototype ---> ObjMaker.prototype
obj2.c;
// returns 'third', from SubObjMaker.prototype
obj2.b;
// returns 'second', from ObjMaker.prototype
obj2.a;
// returns 'first', from SubObjMaker.prototype, because SubObjMaker.prototype
// was created with the ObjMaker function, which assigne...
No increment operator (++) in Ruby? [duplicate]
...-x == -----x == ...... To increment a number, simply write x += 1.
Taken from "Things That Newcomers to Ruby Should Know
" (archive, mirror)
That explains it better than I ever could.
EDIT: and the reason from the language author himself (source):
++ and -- are NOT reserved operator in Ru...