Common Lisp 'remove-if' function.
Common Lisp 'remove-if' function.
It's signature is:
remove-if test sequence &key from-end start end count key => result-sequence
CLHS: remove-if
Questions tagged [remove-if]
201 questions
3
votes
1 answer
Are STL predicates allowed to use their argument's address?
When writing a custom predicate function/functor to pass to an STL algorithm, is the predicate allowed to use the address of its argument?
Here's the problem that inspired the question. I have a vector vec, and a vector inds, which contains some…
SuperElectric
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2
votes
3 answers
c++ STL algo remove_if used with template
I tried to apply stl algorithm remove_if on template, and met some trouble. Any help is appreciated!
template bool flag_delete(pair a) {return (a.second == 1);}
template void fun_delete_by_flag(vector &vec_data, ivec…
user1171015
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2
votes
2 answers
c++ vector; remove_if only removing a single value?
I'm supposed to implement a function that erases a range of values from containers. So
eraseRange(v, 1.5, 24);
for example would delete any value greater than 1.5 and less than 24 from the container v. And my function works perfectly for lists,…
Fault
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2
votes
1 answer
how to extract rows in dataframe based on another list
I have cleaned up one of the columns in a set of data boxes and generated a list, then I now want to extract the entire data box that matches the cleaned up data (list).
For example, I have a cleaned list:
x = c(1,2,3,4,2,1,3)
and my original…
cc Li
- 37
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2
votes
1 answer
Javascript - localStorage issues
In the script below, I want to be able to display on the main html page lists of paragraphs saved in the localstorage. In the html I defined an are with the id "content". I want to display the texte stored in the localstorage in this area.
In the…
dam's
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2
votes
2 answers
Removing rows that do not match a certain condition in r
I have a dataframe with multiple columns and I would like to remove rows that do not meet a certain condition. I would like to only keep the rows that have a -1 followed by a 1 in the dataframe in one of the columns.
Example data.frame
column a …
confusedindividual
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2
votes
1 answer
HASKELL --- Is there any function to remove an element in a list?
My problem is I have a list and want to remove some strings in it. but when I remove the first time it's OK. but the second time, it removes the string but bring back the first one.
do you know how I can avoid this?
thank you
Prelude Data.List…
Bilal
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2
votes
3 answers
jq conditional delete from array
I have this json i got from aws, this is just a test i created not my actual rules
[
{
"Name": "Fortinet-all_rules",
"Priority": 0,
"Statement": {
"ManagedRuleGroupStatement": {
"VendorName": "Fortinet",
…
Tnimni
- 53
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2
votes
3 answers
2
votes
1 answer
(Swift) What is the easiest way to delete all elements in array when condition is true
setsOfCardsByLevel is an array of cards. Every card has a level. I want to remove all cards from array if their level is equal to level from the parameter.
Here is my function:
func removeCardsByLevel(_ level: Int) {
for card in…
faris97
- 402
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2
votes
1 answer
How should i use remove_if to delete elements in range of two numbers
I created Class and initialised a vector inside private field, then i initialised vector by useing methods of my Class.
Now i need to delete elements in range of two numbers which i have to type on a keyboard
#include
#include…
AndrewMemo
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2
votes
2 answers
Remove in depth elements using streams
I have the following classes.
Class A {
List b
//getters and setters
}
CLass B {
List c
//getters and setters
}
Class C {
List d
//getters and setter
}
Class D {}
What i want to do is remove list d if a specific…
Nana
- 55
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2
votes
1 answer
Error C2064: term does not evaluate to a function taking 1 argument - Lambda function
I am getting the following error when building my code:
Error C2064: term does not evaluate to a function taking 1 argument
I read the other posts concerning this error and added the keyword this inside my lambda function but I am still getting the…
Grillteller
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2
votes
1 answer
How to remove rows that are not relevant - R?
I need to calculate the average rating for a movies dataset, but some movies have only one review or a few reviews.
I need to the dataset to keep the rows that have at least 10 reviews
how do I do it?
When I run the code below, I get only 5 star…
bgg
- 131
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2
votes
3 answers
Remove object from Arraylist If it equals userinput and else print out something only once
I have been trying most things now but it doesn't seem to work. I want to remove a specific object from an Arraylist if the user enters a specific name. And if not I want the program to print "Can't find dog". I have a getName and toString method in…
mackanmorre
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