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Display image as grayscale using matplotlib
...If you want to display the inverse grayscale, switch the cmap to cmap='gray_r'.
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Find element's index in pandas Series
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Converting to an Index, you can use get_loc
In [1]: myseries = pd.Series([1,4,0,7,5], index=[0,1,2,3,4])
In [3]: Index(myseries).get_loc(7)
Out[3]: 3
In [4]: Index(myseries).get_loc(10)
KeyError: 10
Duplicate handling
In [5]: Index([1,1,2,2,3,4]).get_loc(2)
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Test whether string is a valid integer
...r example, [A-z] would not only give you A-Z and a-z but also \ , [, ], ^, _, and `.
– Doktor J
Jul 9 '18 at 18:13
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Why does Oracle 9i treat an empty string as NULL?
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docs.oracle.com/cd/B19306_01/server.102/b14200/…
– Walter Mitty
Oct 16 '18 at 0:29
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How should I pass multiple parameters to an ASP.Net Web API GET?
...ri.Query);
var system = nvc["System"];
// BL comes here
return _courses;
}
In my case I was calling the WebApi via Ajax looking like:
$.ajax({
url: '/api/DbMetaData',
type: 'GET',
data: { system : 'My System',
searchString: '123' },
data...
How do I find a “gap” in running counter with SQL?
...change your TOP value, to show more gap results.
– AJ_
Mar 28 '19 at 13:43
1
Thanks, this works v...
Replacement for “rename” in dplyr
...me() function that works just like plyr::rename().
df <- rename(df, new_name = old_name)
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You can't specify target table for update in FROM clause
... absolutely fine. DELETE FROM t WHERE tableID NOT IN (SELECT viewID FROM t_view); Also I recommend running OPTIMIZE TABLE t; afterwards to reduce the size of the table.
– CodeX
Oct 13 '16 at 11:36
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How do you implement a private setter when using an interface?
...Foo { get; private set; } // private
public int Foo
{
get { return _foo; } // no setter
}
public void Poop(); // this member also not part of interface
Setter is not part of interface, so it cannot be called via your interface:
IBar bar = new Bar();
bar.Foo = 42; // will not work thu...
Difference between EXISTS and IN in SQL?
...exists (select 1 from emp where salary > 1000) then 1 else 0 end as sal_over_1000
– smooth_smoothie
Aug 25 '16 at 4:17
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