Recent questions tagged List

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list - Avoid converting numbers to characters in Erlang

I am having trouble with Erlang converting listed numbers to characters whenever none of the listed items could not also ... ] for digitize(8)). 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 - Why does Python sort put upper case items first?

Not looking for a work around. Looking to understand why Python sorts this way. >>> a = ['aaa','Bbb'] >>> a.sort( ... >> print(a) ['aaa', 'bbb'] 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 - instance Alternative ZipList in Haskell?

ZipList comes with a Functor and an Applicative instance (Control.Applicative) but why not Alternative? Is there no good ... z ++ repeat []) 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 - Truncate a float in Erlang

I am using a function to create a list from a float. float_to_list(0.02). It returns: "2.00000000000000000000e- ... to print it to the screen. 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 view position is getting changed when scrolling on android

I have list view [text view and check box controlls] with more data. I will choose the item from list view ... /position unselect(293): Home-232 See Question&Answers more detail:os...

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

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867 views

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list - Dynamic Column Name in LinQ

I am having a class Item. class Item{ public int Id { get; set; } public DateTime CreatedDate { get; set; } ... . How to do this with LinQ? 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 - What is a DList?

I tried googling for this but all I got were stories about minor celebrities. Given the lack of documentation, what is a DList? 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 - Sort elements with specific order in python

How can I sort it by custom order? Input: [ {value: "typeA"}, {value: "typeC"}, {value: "typeB"}, {value: ... (input, key=lambda v:v['value']) 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 - Reading specific columns from a text file in python

I have a text file which contains a table comprised of numbers e.g: 5 10 6 6 20 1 7 30 4 8 40 3 9 ... how do i extract that column into a list? 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 - Find empty or NaN entry in Pandas Dataframe

I am trying to search through a Pandas Dataframe to find where it has a missing entry or a NaN entry. Here ... the NaN or blank entry occurs? See Question&Answers more detail:os...

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

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795 views

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list - gnu Prolog powerset modification

So i got this for powerset: powerset([], []). powerset([H|T], P) :- powerset(T,P). powerset([H|T] ... to. Little stumped at this point. 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 - Implementing "last" in Prolog

I am trying to get a feel for Prolog programming by going through Ulle Endriss' lecture notes. When my solution to ... from the built-in last? See Question&Answers more detail:os...

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

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655 views

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list - Floats not evaluating as negative (Python)

I am trying to delete floating point values in a list that are negative. The original list with all of the values ... didn't. Why is 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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908 views

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list - How to add listener on ArrayList in java

I want to create my own implementation of ArrayList in java, that can listen when the list is changing and to ... an action to be performed? 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 - Recursive Prolog predicate for reverse / palindrome

Can I get a recursive Prolog predicate having two arguments, called reverse, which returns the inverse of a list: Sample ... ,c,a,b]). true. See Question&Answers more detail:os...

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

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775 views

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list - Unsequence Monad function within Haskell

I'm having some real trouble designing the counterfunction of Haskell's sequence function, which Hoogle tells me doesn ... Please tell me that. See Question&Answers more detail:os...

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

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754 views

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list - Python .sort() not working as expected

Tackling a few puzzle problems on a quiet Saturday night (wooohoo... not) and am struggling with sort(). The ... where the puzzle comes from :P See Question&Answers more detail:os...

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

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686 views

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list - Creating a 2d matrix in python

I create a 6x5 2d array, initially with just None in each cell. I then read a file and replace the ... that seems needlessly verbose for python. See Question&Answers more detail:os...

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

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793 views

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list concat in z3

Is there a way to concat two lists in z3? Similar to the @ operator in ML? I was thinking of defining it myself ... insert (head l1) l2)) ) ) See Question&Answers more detail:os...

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

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817 views

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list - Python zip object 'disappears' after iterating through?

Total noob question here but I really want to know the answer. I have no idea why the zip object simply "disappears ... 3.4.2) Can anybody help? 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 : AttributeError: 'NoneType' object has no attribute 'append'

My program looks like # global item_to_bucket_list_map = {} def fill_item_bucket_map(items, buckets): global ... of each j See Question&Answers more detail:os...

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

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721 views

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list - Determine level of nesting in R?

Is there an easy way (i.e. a function) to determine the level of nesting in list? I know there is str ... all levels of alist (recursively) ? See Question&Answers more detail:os...

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

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795 views

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list - Java PriorityQueue with fixed size

I am calculating a large number of possible resulting combinations of an algortihm. To sort this combinations I rate ... very much again! Marco See Question&Answers more detail:os...

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

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1.1k views

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list - Prevent unlist to drop NULL values

I have a vector of lists and I use unlist on them. Some of the elements in the vectors are NULL and unlist seems to be ... p2 p1 p2 2 5 3 4 4 5 See Question&Answers more detail:os...

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

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936 views

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list - How do I convert a Char to Int?

So I have a String of integers that looks like "82389235", but I wanted to iterate through it to add each number ... convert a Char to an Int? See Question&Answers more detail:os...

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

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889 views

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list - python's sum() and non-integer values

Is there a simple and quick way to use sum() with non-integer values? So I can use it like this: class Foo( ... I don't need __add__ in my class See Question&Answers more detail:os...

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

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725 views

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list - Python 3 range Vs Python 2 range

I recently started learning python 3. In python 2 the range() function can be used to assign list elements: >>> A = ... Is it a boon or a bane? See Question&Answers more detail:os...

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

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795 views

1 answer

list - creating a defaultlist in python

I'm trying to create a list equivalent for the very useful collections.defaultdict. The following design works nicely: class ... }, {'a':1}] See Question&Answers more detail:os...

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

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