remove-if Questions

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I want to remove elements (histogram bins) from an std::unordered_map (histogram) that fulfills a predictate (histogram bins having zero count) given as a lambda expression as follows std::remove_...
Comrade asked 9/2, 2012 at 11:25

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in a function I need to check if a (div, span, p) contains any .html elements in it before attempting to remove the html and add in new content. Not sure how to do this... I tried this, but not w...
Pyonephritis asked 5/4, 2013 at 2:24

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We can use remove_if in C++ to remove elements from a vector in linear time based on a predicate that operates on the elements. bool condition(double d) {...} vector<double> data = ... std:...
Novotny asked 17/4, 2014 at 0:28

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I am getting a map in my method from another server and I have some null values, I wanted to remove those ones, because I am struggling with those values in the following process: My map looks som...
Ronnie asked 15/4, 2019 at 20:4

2

I have a list e.g. l1 = [1,2,3,4] and another list: l2 = [1,2,3,4,5,6,7,1,2,3,4]. I would like to check if l1 is a subset in l2 and if it is, then I want to delete these elements from l2 such that...
Verdure asked 19/3, 2017 at 0:51

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In my application I have 4 links with different IDs and 4 DIV with same ID as each link (I use them for anchor-jumping). My current code: <a href="#1" id="go1" class="btn" data-anchor="relati...
Scourings asked 24/12, 2016 at 11:19

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Ok, I expect I've made a dumb mistake here. I have a list of DisplayDevice3d and each DisplayDevice3d contains a list of DisplayMode3d. I want to remove all items from the list of DisplayDevice3d t...
Chaparajos asked 18/12, 2010 at 15:22

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I recently asked a question about removing items from a vector. Well, the solution I got works, but I don't understand it - and I cannot find any documentation explaining it. struct RemoveBlockedH...
Proteolysis asked 31/3, 2011 at 16:55

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Given std::vector<double> a; std::vector<int> ind; where ind is 1sorted in ascending order. I want to do the equivalent of the following: for (auto it=ind.rbegin();it!=ind.rend();...
Labbe asked 16/2, 2015 at 19:11

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I'm beginner in programming. Something is giving me trouble to code. Suppose, I've an array. int Array[] = {3,6,9,5,10,21,3,25,14,12,32,41,3,24,15,26,7,8,11,4}; I want to remove all elements wh...
Gidgetgie asked 17/12, 2014 at 7:43

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I have this: Post.paragraphs << new_paragraph And I need to remove paragraph by id = 3, so the following deletes the record completely: Post.paragraphs.find(paragraph_id).destroy # or Pos...
Bister asked 4/9, 2014 at 8:12

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Here my code. I want remove from vector all elements with successfully called method 'release'. bool foo::release() { return true; } // ... vector<foo> vec; // ... remove_if(vec.begi...
Zach asked 29/3, 2014 at 10:35

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Is there equivalent of higher-order function filter in Emacs Lisp? Like function from python or Javascript. (filter-equivalent (lambda (n) (= (% n 2) 0)) '(1 2 3 4 5 6 7 8)) ==> (2 4 6 8)
Olette asked 25/9, 2013 at 9:38

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I would like to remove elements from a vector using remove_if function but limiting the erasing to N elements. Example: // predicate function that determines if a value is an odd number. bool IsO...
Briard asked 4/6, 2013 at 10:38

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I have a regular expression to validate a string. But now I want to remove all the characters that do not match my regular expression. E.g. regExpression = @"^([\w\'\-\+])" text = "This is a sam...
Brownell asked 27/5, 2011 at 15:28

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Possible Duplicate: remove_if equivalent for std::map I have a set of strings: set <wstring> strings; // ... I wish to remove strings according to a predicate, e.g.: std::re...
Unbend asked 21/6, 2012 at 15:34

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Here's the code: #include <iostream> #include <string> #include <algorithm> using namespace std; int main() { string word=""; getline(cin,word); word.erase(remove_if(word.beg...
Alexandria asked 3/12, 2011 at 1:13

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In the other topic I was trying to solve this problem. The problem was to remove duplicate characters from a std::string. std::string s= "saaangeetha"; Since the order was not important, so I s...
Furie asked 22/3, 2011 at 20:45

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How can I reverse a predicate's return value, and remove the elements that return false instead of true? Here is my code: headerList.remove_if(FindName(name)); (please ignore lack of erase) wi...
Ibnrushd asked 5/10, 2010 at 14:27
1

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