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How to get a value from a cell of a dataframe?
...value using the column name:
In [3]: sub_df
Out[3]:
A B
2 -0.133653 -0.030854
In [4]: sub_df.iloc[0]
Out[4]:
A -0.133653
B -0.030854
Name: 2, dtype: float64
In [5]: sub_df.iloc[0]['A']
Out[5]: -0.13365288513107493
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How to calculate a time difference in C++
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123
See std::clock() function.
const clock_t begin_time = clock();
// do something
std::cout <&...
How can I create Min stl priority_queue?
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2
@AraK, I think you mean operator< ;)
– Peter Alexander
Mar 13 '10 at 17:46
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Dynamically generating a QR code with PHP [closed]
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https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=http%3A%2F%2Fwww.google.com%2F&choe=UTF-8
300x300 is the size of the QR image you want to generate,
the chl is the url-encoded string you want to change into a QR code, and
the choe is the (optional) encoding.
The link, abov...
When do we need curly braces around shell variables?
... unconditionally required when:
expanding array elements, as in ${array[42]}
using parameter expansion operations, as in ${filename%.*} (remove extension)
expanding positional parameters beyond 9: "$8 $9 ${10} ${11}"
Doing this everywhere, instead of just in potentially ambiguous cases, can be c...
How to increase heap size of an android application?
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211
You can use android:largeHeap="true" to request a larger heap size, but this will not work on ...
Can we use join for two different database tables?
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2 Answers
2
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What is the difference between Amazon SNS and Amazon SQS?
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edited Feb 26 '19 at 8:26
Dmytro Melnychuk
1,3191414 silver badges1717 bronze badges
answ...
Create dynamic URLs in Flask with url_for()
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287
It takes keyword arguments for the variables:
url_for('add', variable=foo)
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How to use Greek symbols in ggplot2?
My categories need to be named with Greek letters. I am using ggplot2 , and it works beautifully with the data. Unfortunately I cannot figure out how to put those greek symbols on the x axis (at the tick marks) and also make them appear in the legend. Is there any way to do it?
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