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list - new ArrayList<int>() failing in Java

I have the following code: List<int> intList = new ArrayList<int>(); for (int index = 0; index < ints. ... explain why I am getting the error? 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 make the for each loop function in C++ work with a custom class

I'm new to C/C++ programming, but I've been programming in C# for 1.5 years now. I like C# and I ... List class work with a foreach-like loop? 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 - Android listview with checkbox problem

I have a weird problem! I'm trying to create a listview with checkboxes. In my other thread I was told that I ... me? Thanks in advance -- Mike 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 - Scala's '::' operator, how does it work?

In Scala, I can make a caseclass, case class Foo(x:Int), and then put it in a list like so: List(Foo( ... use it, but what is the explanation? 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 - Using a dict to translate numbers to letters in python

I have a string 'alphabet' with all the letters in the alphabet and a list of ints corresponding to those those ... my statement to do this? 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 comprehension with multiple conditions (python)

The following code works in Python var=range(20) var_even = [0 if x%2==0 else x for x in var] print var, ... work. Is there a reason for this? 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 - R: Obtaining Rules from a Function

I am using the R programming language. I used the "rpart" library and fit a decision tree using some data: ... , functions from base R) Thanks 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 - Prolog: First duplicate value

I need to find the first duplicate value in a list. prep(3,[1,3,5,3,5]). Should be true. prep(5,[ ... in Prolog! I appreciate any help! Thanks 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 python package dependencies without loading them?

Say that python package A requires B, C and D; is there a way to list A → B C D ... : pip-upgrade-package-without-upgrading-dependencies 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 do you split reading a large csv file into evenly-sized chunks in Python?

In a basic I had the next process. import csv reader = csv.reader(open('huge_file.csv', 'rb')) for ... unsubscriptable How can I solve this? 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 comprehension - What do backticks mean to the python interpreter: `num`

I'm playing around with list comprehensions and I came across this little snippet on another site: return ''.join([`num ... 't tried 3.0 yet). See Question&Answers more detail:os...

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

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796 views

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list - Python - sum values in dictionary

I have got pretty simple list: example_list = [ {'points': 400, 'gold': 2480}, {'points': 100, ' ... : total_gold += example_list["gold"] 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 - Subsets in Prolog

I'm looking for a predicate that works as this: ?- subset([1,2,3], X). X = [] ; X = [1] ; ... when you want to generate the subsets. Any ideas? See Question&Answers more detail:os...

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

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654 views

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list - Python: finding lowest integer

I have the following code: l = ['-1.2', '0.0', '1'] x = 100.0 for i in l: if i < x: x = ... value is still 100.0 Where is my code going wrong? 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 - Zip with default value instead of dropping values?

I'm looking for a function in haskell to zip two lists that may vary in length. All zip functions I could ... not find any solution so far. See Question&Answers more detail:os...

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

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711 views

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list - Replacing a sublist with another sublist in python

I want to replace a sub-list from list a, with another sub-list. Something like this: a=[1,3,5,10,13] Lets ... >> [1,9,7,13] Any suggestions? See Question&Answers more detail:os...

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

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719 views

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list - How to flatten a tuple in python

I have the following element of a list, and the list is 100 elements long. [(50, (2.7387451803816479e-13, ... 50, 2.7387451803816479e-13, 219)] See Question&Answers more detail:os...

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

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566 views

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list of ruby operators that can be overridden/implemented

Is there a list anywhere of all ruby operators that can be overridden? (Not the ones that can't!) See Question&Answers more detail:os...

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

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776 views

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list - Initializing 2D array in Python

I have a problem with initialzing a 2D array in python. I want a 6x6 array, I did arr = [[None]*6]*6 But when ... ": 2D arr, "Random": 2D arr } See Question&Answers more detail:os...

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

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723 views

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list - How do I duplicate item when using jquery sortable?

I am using this method http://jqueryui.com/demos/sortable/#connect-lists to connect two lists that i have. ... like that. Any approaches? See Question&Answers more detail:os...

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

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