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How can I get column names from a table in SQL Server?
...lso do it by a SQL query. Some thing like this should help:
SELECT * FROM sys.columns WHERE object_id = OBJECT_ID('dbo.yourTableName')
Or a variation would be:
SELECT o.Name, c.Name
FROM sys.columns c
JOIN sys.objects o ON o.object_id = c.object_id
WHERE o.type = 'U'
ORDER ...
How to get a reference to a module inside the module itself?
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import sys
current_module = sys.modules[__name__]
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convert double to int
What is the best way to convert a double to an int ? Should a cast be used?
10 Answers
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Python: reload component Y imported with 'from X import Y'?
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from modulename import func
import importlib, sys
importlib.reload(sys.modules['modulename'])
from modulename import func
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Using the rJava package on Win7 64 bit with R
...(at least for me). You can check easily within R is JAVA_HOME is set with
Sys.getenv("JAVA_HOME")
If you need to have JAVA_HOME set (e.g. you need it for maven or something else), you could deactivate it within your R-session with the following code before loading rJava:
if (Sys.getenv("JAVA_HO...
Measuring function execution time in R
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Another possible way of doing this would be to use Sys.time():
start.time <- Sys.time()
...Relevent codes...
end.time <- Sys.time()
time.taken <- end.time - start.time
time.taken
Not the most elegant way to do it, compared to the answere above , but definitely a w...
How to convert numbers between hexadecimal and decimal
How do you convert between hexadecimal numbers and decimal numbers in C#?
17 Answers
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An efficient way to transpose a file in Bash
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$ time perl test.pl file >/dev/null
real 0m0.480s
user 0m0.442s
sys 0m0.026s
$ time awk -f test.awk file >/dev/null
real 0m0.382s
user 0m0.367s
sys 0m0.011s
$ time perl test.pl file >/dev/null
real 0m0.481s
user 0m0.431s
sys 0m0.022s
$ time awk -f test.a...
How to convert from System.Enum to base integer?
I'd like to create a generic method for converting any System.Enum derived type to its corresponding integer value, without casting and preferably without parsing a string.
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Split string, convert ToList() in one line
...ut the need of Linq:
List<int> numbers = new List<int>( Array.ConvertAll(sNumbers.Split(','), int.Parse) );
// Uses Linq
var numbers = Array.ConvertAll(sNumbers.Split(','), int.Parse).ToList();
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