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Add unique constraint to combination of two columns
...exception (exceptions are expensive).
http://www.sqlperformance.com/2012/08/t-sql-queries/error-handling
http://www.mssqltips.com/sqlservertip/2632/checking-for-potential-constraint-violations-before-entering-sql-server-try-and-catch-logic/
If you want to prevent exceptions from bubbling up to th...
Does Python support multithreading? Can it speed up execution time?
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Martijn Pieters♦Martijn Pieters
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nodeValue vs innerHTML and textContent. How to choose?
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mplungjan
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answered Jan 23 '14 at 14:57
peterfoldipet...
How do I write good/correct package __init__.py files
...ed Nov 13 '14 at 20:46
user212218
answered Dec 22 '09 at 17:16
Fire CrowFire Crow
6,59...
Hidden Features of Java
... community wiki
2 revs, 2 users 88%Boris Terzic
40
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Why is arr = [] faster than arr = new Array?
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hammarhammar
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4
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How can I programmatically determine if my app is running in the iphone simulator?
...nditionals.h"
but this is no longer necessary on the current (Xcode 6/iOS8) toolchain.
So, for example, if you want to check that you are running on device, you should do
#if TARGET_OS_SIMULATOR
// Simulator-specific code
#else
// Device-specific code
#endif
depending on which is appro...
How do you see the entire command history in interactive Python?
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68
Use readline.get_current_history_length() to get the length, and readline.get_history_item() to ...
Reading Excel files from C#
...ovider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0;", fileName);
var adapter = new OleDbDataAdapter("SELECT * FROM [workSheetNameHere$]", connectionString);
var ds = new DataSet();
adapter.Fill(ds, "anyNameHere");
DataTable data = ds.Tables["anyNameHere"];
This is wh...
How to automatically install Emacs packages by specifying a list of package names?
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Nicolas DudeboutNicolas Dudebout
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