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Android: Vertical ViewPager [closed]

...horizontal drag you will have to override ViewPager's default touch events and swap the coordinates of MotionEvents prior to handling them, e.g.: /** * Uses a combination of a PageTransformer and swapping X & Y coordinates * of touch events to create the illusion of a vertically scrolling Vie...
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Android : Check whether the phone is dual SIM

... Update 23 March'15 : Official multiple SIM API is available now from Android 5.1 onwards Other possible option : You can use Java reflection to get both IMEI numbers. Using these IMEI numbers you can check whether the phone is a DUAL SIM or not. Try following activity : import andro...
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Why does i = i + i give me 0?

... Could you expand on your answer a bit? – DeaIss Jun 11 '14 at 22:16 17 ...
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How does the Comma Operator work

...itializers for symbol tables. Thus, it makes the following syntax possible and meaningful: keywords = "and", "or", "not", "xor"; Notice that due to operator precedence, the code is (intentionally!) identical to (((keywords = "and"), "or"), "not"), "xor"; That is, the first operator called is k...
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How to read and write excel file

I want to read and write an Excel file from Java with 3 columns and N rows, printing one string in each cell. Can anyone give me simple code snippet for this? Do I need to use any external lib or does Java have built-in support for it? ...
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Adding a new SQL column with a default value

...r down the page: column_definition clauses use the same syntax for ADD and CHANGE as for CREATE TABLE. See Section 12.1.17, “CREATE TABLE Syntax”. And from the linked page: column_definition: data_type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT] [UNIQUE [KEY] | [PRI...
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What is the difference between UTF-8 and ISO-8859-1?

... I had seen where Umlaut's are not supposedly converted with UTF8. We saw examples of this and in searching we found the ISO-8859-1 and it seems to work. We have a lot of German Scientist we work with. – Aggie Jon of 87 Jul 25 '18...
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Is it possible to read from a InputStream with a timeout?

...tream always returns 0. This method should be overridden by subclasses. And indeed, the concrete input stream classes do override available(), providing meaningful values, not constant 0s. Second Caveat: Ensure you use carriage-return when typing input in Windows. If using System.in, your progr...
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Expand/collapse section in UITableView in iOS

Could somebody tell me the way to perform UITableView expandable/collapsible animations in sections of UITableView as below? ...
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What is meant with “const” at end of function declaration? [duplicate]

...al function taking an implicit this pointer. So a method int Foo::Bar(int random_arg) (without the const at the end) results in a function like int Foo_Bar(Foo* this, int random_arg), and a call such as Foo f; f.Bar(4) will internally correspond to something like Foo f; Foo_Bar(&f, 4). Now addin...