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Detect rotation of Android phone in the browser with JavaScript
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In the iOS5 emulator, if you refresh in landscape then rotate, this code does not fire.
– worked
May 26 '12 at 14:23
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Remove Fragment Page from ViewPager in Android
...fyChanged() method of the ViewPager which it is attached to. The ViewPager then checks the value returned by the adapter's getItemPosition() for each item, removing those items which return POSITION_NONE (see the source code) and then repopulating.
Overriding getItemId():
This is necessary to pre...
How do you reverse a string in place in C or C++?
...o the number of character swaps the code performs, for n of string length, then n swaps are performed. If you we're talking about the amount of loops performed then its still O(n) - albeit O(n/2) but you drop the constants in Big O notation.
– Stephen Fox
Dec 1...
How and where are Annotations used in Java?
...at run-time using Reflection & this process is known as Introspection. Then it could be used to modify classes, fields or methods.
This feature, is often exploited by Libraries & SDKs (hibernate, JUnit, Spring Framework) to simplify or reduce the amount of code that a programmer would unles...
Multiple submit buttons on HTML form – designate one button as default [duplicate]
...float left, just enclose the "buttons" id element in a float left div, and then your buttons will be reordered with Next coming after Previous as desired, but the button group will remain floated left.
– Scott Gardner
Jul 6 '13 at 11:39
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Git Tag list, display commit sha1 hashes
...ash of the Tag object, you can run:
git show-ref --tags
The output will then look something like:
0e76920bea4381cfc676825f3143fdd5fcf8c21f refs/tags/1.0.0
5ce9639ead3a54bd1cc062963804e5bcfcfe1e83 refs/tags/1.1.0
591eceaf92f99f69ea402c4ca639605e60963ee6 refs/tags/1.2.0
40414f41d0fb89f7a0d2f17736a...
Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
... get 256, but the numbers in computers terms begins from the number 0. So, then you got the 255, you can probe it in a internet mask for the IP or in the IP itself.
255 is the maximum value of a 8 bit integer : 11111111 = 255
Does that help?
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How to efficiently concatenate strings in go
...f you know the total length of the string that you're going to preallocate then the most efficient way to concatenate strings may be using the builtin function copy. If you don't know the total length before hand, do not use copy, and read the other answers instead.
In my tests, that approach is ~3x...
Why java.io.File doesn't have a close() method?
...les cannot.
(My personal opinion is that it's rather unfortunate that Sun then went on to create RandomAccessFile, causing much confusion with its inconsistent naming.)
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How to restart a rails server on Heroku?
Locally I just interrupt (ctrl-c) and then start it again.
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