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How to get a value from a cell of a dataframe?
... a Series using iloc, and then the 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 modify Github pull request？
...ened a pull request to a project. The maintainer has decided to accept it, but told me to modify some contents.
4 Answers
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Get last element of Stream/List in a one-liner
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It is possible to get the last element with the method Stream::reduce. The following listing contains a minimal example for the general case:
Stream<T> stream = ...; // sequential or parallel stream
Optional<T> last = strea...
How to negate the whole regex?
...gex, for example (ma|(t){1}) . It matches ma and t and doesn't match bla .
4 Answers
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SQLite add Primary Key
I created a table in Sqlite by using the CREATE TABLE AS syntax to create a table based on a SELECT statement. Now this table has no primary key but I would like to add one.
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What is a handle in C++?
I have been told that a handle is sort of a pointer, but not, and that it allows you to keep a reference to an object, rather than the object itself. What is a more elaborate explanation?
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What is `git diff --patience` for?
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You can read a post from Bram Cohen, the author of the patience diff algorithm, but I found this blog post to summarize the patience diff algorithm very well:
Patience Diff, instead, focuses its energy on the low-frequency high-content lines which s...
Multi-statement Table Valued Function vs Inline Table Valued Function
...s comment, I have revised my original statement. He is correct, there will be a difference in performance between an inline table valued function (ITVF) and a multi-statement table valued function (MSTVF) even if they both simply execute a SELECT statement. SQL Server will treat an ITVF somewhat lik...
How can I get the behavior of GNU's readlink -f on a Mac?
... that follows additional links. This doesn't seem to work on Mac and possibly BSD based systems. What would the equivalent be?
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Create array of all integers between two numbers, inclusive, in Javascript/jQuery [duplicate]
Say I have the following checkbox:
15 Answers
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