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Programming, Python

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How do you use the ellipsis slicing syntax in Python?

This came up in Hidden features of Python, but I can’t see good documentation or examples that explain how the feature works. 4 ...

June 3, 2022
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go, Programming

IT Nursery

How to join a slice of strings into a single string?

package main import ( "fmt" "strings" ) func main() { reg :=...

June 1, 2022
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go, Programming

IT Nursery

How to get the last element of a slice?

What is the Go way for extracting the last element of a slice? var slice...

May 26, 2022
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How to slice an array in Bash

Looking the “Array” section in the bash(1) man page, I didn’t find a way to slice an array. So I came up with ...

May 25, 2022
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Explanation of [].slice.call in javascript?

I stumbled onto this neat shortcut for converting a DOM NodeList into a regular array, but I must admit, I don’t completely understand ...

May 25, 2022
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How to delete an element from a Slice in Golang

fmt.Println("Enter position to delete::") fmt.Scanln(&pos) new_arr := make(...

May 22, 2022
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Select rows in pandas MultiIndex DataFrame

What are the most common pandas ways to select/filter rows of a dataframe whose index is a MultiIndex? Slicing based on a single ...

May 22, 2022
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ValueError: setting an array element with a sequence

This Python code: import numpy as p def firstfunction(): UnFilteredDuringExSummaryOfMeansArray = MeanOutputHeader=['TestID','ConditionName','FilterType','RRMean','HRMean', 'dZdtMaxVoltageMean','BZMean','ZXMean','LVETMean','Z0Mean', 'StrokeVolumeMean','CardiacOutputMean','VelocityIndexMean'] dataMatrix = BeatByBeatMatrixOfMatrices[column] roughTrimmedMatrix = p.array(dataMatrix...

May 20, 2022
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How to take column-slices of dataframe in pandas

I load some machine learning data from a CSV file. The first 2 columns are observations and the remaining columns are features. Currently, ...

May 16, 2022
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Correct way to initialize empty slice

To declare an empty slice, with a non-fixed size, is it better to do: mySlice1 := make(int, 0) or: mySlice2 :=...

May 12, 2022
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