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What is a wrapper class?
... class that implements the Adapter Pattern. This allows you to modify one set of APIs into a more usable, readable form. For example, in C#, if you want to use the native Windows API, it helps to wrap it into a class that conforms to the .NET design guidelines.
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What does it mean by buffer?
...es or program processes that operate at different speeds or with different sets of priorities. The buffer allows each device or process to operate without being held up by the other. In order for a buffer to be effective, the size of the buffer and the algorithms for moving data into and out of the ...
iOS - Dismiss keyboard when touching outside of UITextField
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@ParthBhatt I added [tap setCancelsTouchesInView:NO]; per @qiaoyi 's answer; I had an issue with a table not responding to row selections. 5 years later, I hope this helps someone else.
– Tom Howard
Jun 6 '16 at...
T-SQL CASE Clause: How to specify WHEN NULL
...se you get a firts+space+last name.
this will work as long as the default setting for concatenation with null strings is set:
SET CONCAT_NULL_YIELDS_NULL ON
this shouldn't be a concern since the OFF mode is going away in future versions of SQl Server
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Multiple returns from a function
... methods above. It may make sense to use this, though, when using the same set of variables in a number of places (or of course, working in a language that doesn't support the above methods or allows you to do this without extra typing).
class MyXYZ
{
public $x;
public $y;
public $z;
}
...
What is the syntax rule for having trailing commas in tuple definitions?
...d when required for other syntactic reasons: to distinguish a tuple from a set of function arguments, operator precedence, or to allow line breaks.
The trailing comma for tuples, lists, or function arguments is good style especially when you have a long initialisation that is split over multiple li...
How to fix homebrew permissions?
...edited Jun 6 at 21:18
Brian Tompsett - 汤莱恩
4,8921414 gold badges4343 silver badges118118 bronze badges
answered Oct 20 '17 at 7:40
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How can I remove an element from a list?
...see R FAQ 7.1
And the relevant section of the R FAQ says:
... Do not set x[i] or x[[i]] to NULL, because this will remove the corresponding component from the list.
Which seems to tell you (in a somewhat backwards way) how to remove an element.
Hope that helps, or at least leads you in the...
Is there a job scheduler library for node.js? [closed]
...e isn't this kind of library how this should be implemented? Should I just set callback to be called every second and check the time and start jobs scheduled for the time or what?
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What happens if you don't commit a transaction to a database (say, SQL Server)?
... is definitely dependant on the isolation level. If you have the isolation set to READ UNCOMMITTED you can read data not yet committed and may in fact be rolled back at some point the track, but this ensures there is no locking. If you have READ COMMITTED as your isolation level, then you can't read...