list Questions
3
Solved
I have the following data:
df <- structure(list(id = c("1358792", "1358792", "333482", "333482", "747475", "747475"),
x = c("123...
3
Solved
I just want to get a list or dict from dtype out of a numpy array. Thought it would be a easy but it is not itterable. I looked other places but could not find answer.
jn is a recarray
[OrderedDi...
Fornof asked 14/2, 2014 at 10:42
8
Solved
I have this issue where I would like to shuffle a list, but only do so slightly. Say, I want only a small number of elements to be moved. Is there a simple way to get this done?
Right now the best...
3
Solved
Conventional way of dealing with optional list arguments is the following:
def func(list_of_vals = None):
if list_of_vals is None:
list_of_vals = []
...
I wounder if the following (shorter) v...
Climax asked 28/10, 2016 at 21:36
3
Solved
I have a dataframe with a certain number of groups, containing a weight column and a list of values, which can be of arbitrary length, so for example:
df = pl.DataFrame(
{
"Group": [&qu...
Girand asked 9/11, 2022 at 8:55
4
Given an example dataframe where we have column 'b' containing lists, and each list has the same length (so it also could be converted to arrays)
df_test = pl.DataFrame({'a': [1., 2., 3.], 'b': [[2...
Boor asked 25/3 at 10:19
2
I use Google Chrome on Linux Debian 10. And I download many files by this (thousands). And I should to export links, I downloaded files from. I was looking for method in the Internet and found some...
Spalla asked 11/10, 2020 at 10:36
4
Solved
8
Let's say I have a List in Kotlin like:
val lst = MutableList<Int>()
If I want the last item, I can do lst.last(), but what about the second to last?
2
Solved
I have a list of fractions that I need to transform.
from fractions import Fraction
fractions_list=[Fraction(3,14),Fraction(1,7),Fraction(9,14)]
The output should be a list with the numerators fo...
Suspense asked 6/4, 2020 at 6:53
3
Solved
My filter_list has a large number of elements. The filtering below works but how would one make the dplyr::filter more concise?
I couldn't make all_of work.
filter_list <- list(
hair_color = c(...
5
Solved
I have a long tuple like
(2, 2, 10, 10, 344, 344, 45, 43, 2, 2, 10, 10, 12, 8, 2, 10)
and i am trying to split it into a tuple of tuples like
((2, 2, 10, 10), (344, 344, 45, 43), (2, 2, 10, 10)...
5
Solved
I would like to print a List in Java.
r1
r2
r3
r4
Here is the code:
public static final void main(String args[]) {
Scanner a = new Scanner(System.in);
String r1, r2, r3, r4;
System.out.pr...
5
I tried to run this code, but it showed an error:
def shoot(aliens):
s=[0]*1000
s[0]=0
s[1]=1
num=len(aliens)
b=[[0 for m in range(1000)] for n in range(1000)]
for j in xrange(2,num):
for i ...
Vorous asked 19/7, 2013 at 20:46
3
Solved
Say that I have this list:
listexample = list(books = list(list(
title="Book 1",
entry = "entry 1",
publisher = "Books Unlimited",
authors = list(
list(name="...
3
Solved
There is an existing thread about this
Zipping unequal lists in python in to a list which does not drop any element from longer list being zipped
But it's not quite I'm after.
Instead of returning ...
Buddhi asked 25/4, 2019 at 10:9
2
I am trying to map a List<List<Object>> to a RecyclerView in Android, but the result is totally messed up.
For example, I have a list of list like this (just for explaining, not my real...
Bedmate asked 15/4, 2015 at 23:14
4
Solved
Need to trunate text in admin list_display
Have the following in admin model but still shows full text.
from django.template.defaultfilters import truncatewords
def get_description(self, obj):
...
6
Solved
How do I print out my dictionary in the original order I had set up?
If I have a dictionary like this:
smallestCars = {'Civic96': 12.5, 'Camry98':13.2, 'Sentra98': 13.8}
and I do this:
for car...
Tasker asked 21/11, 2013 at 1:19
2
How do I know if my data in R is a list or a data.frame?
If I use typeof(x) it says list, if I use class(x) it says data.frame?
6
Solved
Say I have a string like this:
set str "AAA B C DFG 142 56"
Now I want to get a list as follows:
{AAA B C DFG 142 56}
For that I want to use split function, but in that case I get some extra ...
Danley asked 20/4, 2011 at 10:8
4
Solved
Say I have an std::list<int> lst and some std::list<int>::iterator it for iterating through the list. And depended to value of the it I want to use it + 1 or it - 1 in my code. Is there...
1
I want to collect List<TestClone>, but looks like .collect() returns only List<Object>. Is there a way I can get List<TestClone>?
I know .toArray() is there, but want an ArrayList...
Zilber asked 15/7 at 16:18
6
Solved
I've a list of IP addresses as follows
192.168.1.5
69.52.220.44
10.152.16.23
192.168.3.10
192.168.1.4
192.168.2.1
I'm looking for such a way to sort this list to match the below order
10.152.16...
Maurine asked 6/6, 2011 at 5:16
12
Solved
I have a DNA sequence and would like to get reverse complement of it using Python. It is in one of the columns of a CSV file and I'd like to write the reverse complement to another column in the sa...
Gat asked 7/8, 2014 at 17:50
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