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How do I get a list of all the duplicate items using pandas in python?
... in duplicated:
>>> import pandas as pd
>>> df = pd.read_csv("dup.csv")
>>> ids = df["ID"]
>>> df[ids.isin(ids[ids.duplicated()])].sort("ID")
ID ENROLLMENT_DATE TRAINER_MANAGING TRAINER_OPERATOR FIRST_VISIT_DATE
24 11795 27-Feb-12 ...
sed or awk: delete n lines following a pattern
...
This might work for you:
cat <<! >pattern_number.txt
> 5 3
> 10 1
> 15 5
> !
sed 's|\(\S*\) \(\S*\)|/\1/,+\2{//!d}|' pattern_number.txt |
sed -f - <(seq 21)
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What are the main performance differences between varchar and nvarchar SQL Server data types?
... using 3 letter codes. And consider using a binary Collation such as Latin1_General_100_BIN2.
If storing postal codes (i.e. zip codes), use VARCHAR since it is an international standard to never use any letter outside of A-Z. And yes, still use VARCHAR even if only storing US zip codes and not INT s...
How to determine if one array contains all elements of another array
... a1 and a2, and a1 "containing all elements of" a2, I think this should be _ (a1 & a2).size == a2.size _ since a2 is the smaller array, which should have all elements included in the larger array (to obtain 'true') - hence the intersection of the two arrays should be the same length as the small...
How to convert 2D float numpy array to 2D int numpy array?
...
you can use np.int_:
>>> x = np.array([[1.0, 2.3], [1.3, 2.9]])
>>> x
array([[ 1. , 2.3],
[ 1.3, 2.9]])
>>> np.int_(x)
array([[1, 2],
[1, 2]])
...
Html.RenderPartial giving me strange overload error?
I made a test partial page named _Test.cshtml and put it in the same directory as my view that will be calling it, here it is:
...
Scala: write string to file in one statement
....write(Paths.get("file.txt"), "file contents".getBytes(StandardCharsets.UTF_8))
I think this is by far the simplest and easiest and most idiomatic way, and it does not need any dependencies sans Java itself.
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Why does Eclipse automatically add appcompat v7 library support whenever I create a new project?
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Is it better to avoid the app_compat?
– Neolardo Va Dinci
Feb 22 '15 at 2:26
2
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How can I reliably get an object's address when operator& is overloaded?
..., minus the compiler work around bits:
template<class T>
struct addr_impl_ref
{
T & v_;
inline addr_impl_ref( T & v ): v_( v ) {}
inline operator T& () const { return v_; }
private:
addr_impl_ref & operator=(const addr_impl_ref &);
};
template<class T>
str...
Finding the Eclipse Version Number
... just tried this, the .eclipseproduct contained 3.6.1 but the readme/readme_eclipse.html contained 3.6.2. Turns out that 3.6.2 is the correct version so just be wary.
– Dave Griffiths
Oct 29 '13 at 16:14
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