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list - Index all *except* one item in python

Is there a simple way to index all elements of a list (or array, or whatever) except for a particular index? ... the whole list except for 3 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Creating an R dataframe row-by-row

I would like to construct a dataframe row-by-row in R. I've done some searching, and all I came up with ... track of the last index used? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Get unique values from ArrayList in Java

I have an ArrayList with a number of records and one column contains gas names as CO2 CH4 SO2, etc. Now I ... ArrayList. How can it be done? See Question&Answers more detail:os...

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list - How to merge YAML arrays?

I would like to merge arrays in YAML, and load them via ruby - some_stuff: &some_stuff - a - b - c ... do I merge arrays in YAML? See Question&Answers more detail:os...

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list - Python Array Slice With Comma?

I was wondering what the use of the comma was when slicing Python arrays - I have an example that appears ... the end number designate? Thanks. See Question&Answers more detail:os...

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list - How can I exclude multiple folders using Get-ChildItem -exclude?

I need to generate a configuration file for our Pro/Engineer CAD system. I need a recursive list of the ... Object {$_.FullName} > $search_pro See Question&Answers more detail:os...

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list - How to convert BASE64 string into Image with Flutter?

I'm converting images saved in my Firebase database to Base64 and would like to decode and encode. I've researched ... must be a multiple of 4 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - How to use python numpy.savetxt to write strings and float number to an ASCII file?

I have a set of lists that contain both strings and float numbers, such as: import numpy as num NAMES = ... this instead of using numpy.savetxt? See Question&Answers more detail:os...

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list - How to clear cache Android

I need to find a way how to clear the data which my application stores in cache.Basically I am using Fedor's ( ... } } return dir.delete(); } See Question&Answers more detail:os...

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list - Pairwise crossproduct in Python

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list - Partitioning in JavaScript

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list - pyspark collect_set or collect_list with groupby

How can I use collect_set or collect_list on a dataframe after groupby. for example: df.groupby('key'). ... 'GroupedData' object has no attribute 'collect_set' Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - What is Haskell's Stream Fusion

What is Haskell's Stream Fusion and how do I use it? Question&Answers:os...

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list - Getting all file names from a folder using C#

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list - Merge multiple column values into one column in python pandas

I have a pandas data frame like this: Column1 Column2 Column3 Column4 Column5 0 a 1 2 3 4 1 a 3 4 5 ... issue? Any advice would be helpful. Thanks in advance! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Prolog removing unique elements only

I want to return a list that removes all unique elements for example remUniqueVals([1,1,2,2,3,4,4,5,6,6,6],Q). Q = [1,1,2,2, ... ], [1,1]). A = 1, B = 1, C = 1. Question&Answers:os...

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list - merging Python dictionaries

I am trying to merge the following python dictionaries as follow: dict1= {'paul':100, 'john':80, 'ted':34, ' ... None]} Is there an efficient way to do this? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Combining (cbind) vectors of different length

I have several vectors of unequal length and I would like to cbind them. I've put the vectors into a list and I have ... 8 NA NA How can I go about doing this? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Python's insert returning None?

#!/usr/bin/python numbers = [1, 2, 3, 5, 6, 7] clean = numbers.insert(3, 'four') print clean # desire results ... 7] I am getting "None". What am I doing wrong? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Dynamic variable in Python

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list - Java 8 stream reverse order

General question: What's the proper way to reverse a stream? Assuming that we don't know what type of elements ... (Integer::compare) what am I missing here? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - PHP Get all subdirectories of a given directory

How can I get all sub-directories of a given directory without files, .(current directory) or ..(parent directory) and then use each directory in a function? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - In Python, what is the difference between ".append()" and "+= []"?

What is the difference between: some_list1 = [] some_list1.append("something") and some_list2 = [] some_list2 += ["something"] Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Variable assignment and modification (in python)

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Basics of recursion in Python

"Write a recursive function, "listSum" that takes a list of integers and returns the sum of all integers in ... since special built-in functions is not allowed. Question&Answers:os...

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list - Transpose a matrix in Python

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - How can I return two values from a function in Python?

I would like to return two values from a function in two separate variables. For example: def select_choice(): loop = ... a tuple and this is not what I want. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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list - Why am I not getting a java.util.ConcurrentModificationException in this example?

Note: I am aware of the Iterator#remove() method. In the following code sample, I don't understand why the List. ... ) { integerList.remove(integer); } } } } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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