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Finding differences between elements of a list
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>>> t
[1, 3, 6]
>>> [j-i for i, j in zip(t[:-1], t[1:])] # or use itertools.izip in py2k
[2, 3]
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Enable 'xp_cmdshell' SQL Server
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375
You need to enable it. Check out the Permission section of the xp_cmdshell MSDN docs:
http:/...
Select statement to find duplicates on certain fields
... which there are multiple records, you can use..
select field1,field2,field3, count(*)
from table_name
group by field1,field2,field3
having count(*) > 1
Check this link for more information on how to delete the rows.
http://support.microsoft.com/kb/139444
There should be a criterion for de...
Evaluating a mathematical expression in a string
...= 'Paul McGuire'
__version__ = '$Revision: 0.0 $'
__date__ = '$Date: 2009-03-20 $'
__source__ = '''http://pyparsing.wikispaces.com/file/view/fourFn.py
http://pyparsing.wikispaces.com/message/view/home/15549426
'''
__note__ = '''
All I've done is rewrap Paul McGuire's fourFn.py as a class, so I can u...
How to add icon inside EditText view in Android ?
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438
Use the android:drawableLeft property on the EditText.
<EditText
...
android:d...
Saving vim macros
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edited Jun 13 '13 at 12:02
timss
8,99633 gold badges2828 silver badges5252 bronze badges
a...
Fast stable sorting algorithm implementation in javascript
I'm looking to sort an array of about 200-300 objects, sorting on a specific key and a given order (asc/desc). The order of results must be consistent and stable.
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Reload the path in PowerShell
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edited May 23 '17 at 12:26
Community♦
111 silver badge
answered Aug 6 '15 at 1:44
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Add unique constraint to combination of two columns
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223
Once you have removed your duplicate(s):
ALTER TABLE dbo.yourtablename
ADD CONSTRAINT uq_your...
Changing the “tick frequency” on x or y axis in matplotlib?
... numpy as np
import matplotlib.pyplot as plt
x = [0,5,9,10,15]
y = [0,1,2,3,4]
plt.plot(x,y)
plt.xticks(np.arange(min(x), max(x)+1, 1.0))
plt.show()
(np.arange was used rather than Python's range function just in case min(x) and max(x) are floats instead of ints.)
The plt.plot (or ax.plot) ...