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sqlite alter table add MULTIPLE columns in a single statement
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The answer from @mu is too short' is right. As an extra, adding an optimized workaround for adding multiple columns using the benefit of transactions in SQL.
String alterTableQuery = "ALTER TABLE " + TABLE_NAME + " ADD COLUMN ";
List&l...
Why no ICloneable?
... comes with a variation of the "diamond problem": if CloneableFoo inherits from [not publicly cloneable] Foo, should CloneableDerivedFoo derive from...
– supercat
Aug 10 '12 at 15:26
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How does delete[] know it's an array?
... these days. But there are still some situations where saving a few bytes (from what could be a very high number of memory blocks) can be important.
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How can I convert a DOM element to a jQuery element?
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actually i am getting the element from somewhere where i cant change the code
– Tanmoy
Jul 9 '09 at 16:54
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jquery save json data object in cookie
...sket-data", JSON.stringify($("#ArticlesHolder").data()));
Then to get it from the cookie:
$("#ArticlesHolder").data(JSON.parse($.cookie("basket-data")));
This relies on JSON.stringify() and JSON.parse() to serialize/deserialize your data object, for older browsers (IE<8) include json2.js to ...
Is there XNOR (Logical biconditional) operator in C#?
...OR 0x5678 == 0xFFFFBBB3 (assuming 32 bits). For that, you need to build up from other operations, like ~(A^B). (Note: ~, not !.)
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How do I call some blocking method with a timeout in Java?
... to be a Daemon thread. This way the thread will not stop your application from terminating.
Use non blocking Java APIs. So for network for example, use NIO2 and use the non blocking methods. For reading from the console use Scanner.hasNext() before blocking etc.
If your blocking call is not an IO,...
Switch on ranges of integers in JavaScript [duplicate]
... switch statement does not provide a rationale to remove switch statements from all languages.
– xtempore
Jul 21 '14 at 8:03
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Creating a new column based on if-elif-else condition
...er of records. Still, I think it is much more readable. Especially coming from a SAS background.
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Python using enumerate inside list comprehension
...o enumeration but how about something like this, just another perspective
from itertools import izip, count
a = ["5", "6", "1", "2"]
tupleList = list( izip( count(), a ) )
print(tupleList)
It becomes more powerful, if one has to iterate multiple lists in parallel in terms of performance. Just a t...