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Questions - lambda

How can I rewrite this method using streams and lambda expressions?

I have this piece of code here that basically just creates a number of threads equal to the parameter, instantiates a MyRunnable object in each thread, adds the thread to a list of threads and then se...
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Puneet Talapaneni

java

lambda

java-stream

Votes: 0

Answers: 2

Latest Answer

You can do it like this: public class ThreadManager { protected List<Thread> threads; public void createThreads(int number) { IntStream.range(0, number).forEach(i -> threads.add(new...
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Chaosfire

Pandas apply multiple function with list

I have a df with a 'File_name' column which contains strings of a file name, which I would like to parse: data = [['f1h3_13oct2021_gt1.csv', 2], ['p8-gfr-20dec2021-81.csv', 0.5]] df= pd.DataFrame(dat...
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ingcerullo

python

pandas

lambda

apply

Votes: 0

Answers: 1

Latest Answer

Assuming you want to extract and convert the possible chunks as date, you could split the string on delimiters, explode to multiple rows and attempt to convert to date with pandas.to_datetime: df.join...
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mozway

python - if-else in a for loop processing one column

I am interested to loop through column to convert into processed series. Below is an example of two row, four columns data frame: import pandas as pd from rapidfuzz import process as process_rapid fro...
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Death Metal

pandas

dataframe

if-statement

lambda

Votes: 0

Answers: 1

Latest Answer

If I get you right, try out this fast solution using numpy.where: df_diagnosis['new_column'] = np.where(df_diagnosis['is_spell_corrected'] > 1, df_diagnosis['spell_corrected_value'], df_diagnosis['...
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Gedas Miksenas

How to set one pandas dataframe column value based on a 2nd column&#39;s value

Situation I have a pandas dataframe dfwith a column sentiment_rating. index sentiment_rating 2022-03-20 .3 2022-03-21 -.4 2022-03-24 -.7 2022-03-28 .6 2022-03-31 .2 Goal I'm trying...
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dsx

python

pandas

dataframe

lambda

Votes: 0

Answers: 3

Latest Answer

You can use numpy.select: >>> import numpy as np >>> df['status'] = np.select( condlist = [df.sentiment_rating > 0.5, df.sentiment_rating < -0.5], choicelist = ...
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Sayandip Dutta

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