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How to find all duplicate from a List? [duplicate]
I have a List<string> which has some words duplicated. I need to find all words which are duplicates.
9 Answers
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Writing your own STL Container
...technically optional, due to the awesomeness that is iterators.
template <class T, class A = std::allocator<T> >
class X {
public:
typedef A allocator_type;
typedef typename A::value_type value_type;
typedef typename A::reference reference;
typedef typename A::const_ref...
How is std::function implemented?
...another, but the core idea is that it uses type-erasure. While there are multiple ways of doing it, you can imagine a trivial (not optimal) solution could be like this (simplified for the specific case of std::function<int (double)> for the sake of simplicity):
struct callable_base {
virtu...
“find: paths must precede expression:” How do I specify a recursive search that also finds files in
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@Planky: I put : find , -name 'write.lock' in shell script file but it has this error message. But if I type in console, it works. Anyone knows why?
– Scott Chu
Jun 13 '17 at 3:21
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git produces Gtk-WARNING: cannot open display
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Just wanted to add that it was this script setting this variable on my CentOS 6.7 system: /etc/profile.d/gnome-ssh-askpass.sh
– hshib
Mar 25 '16 at 21:15
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Example for boost shared_mutex (multiple reads/one write)?
I have a multithreaded app that has to read some data often, and occasionally that data is updated. Right now a mutex keeps access to that data safe, but it's expensive because I would like multiple threads to be able to read simultaneously, and only lock them out when an update is needed (the updat...
AngularJS ng-click stopPropagation
... reference to JS event object and can be used to call stopPropagation():
<table>
<tr ng-repeat="user in users" ng-click="showUser(user)">
<td>{{user.firstname}}</td>
<td>{{user.lastname}}</td>
<td>
<button class="btn" ng-click="delete...
Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
... pattern matching (which Java doesn't have). Scala 2.8 adds named and default arguments, which are used to generate a copy method for case classes, which gives the same ability as the with* methods of the following Java class.
public class Person implements Serializable {
private final String f...
Html List tag not working in android textview. what can i do?
... Html.fromHtml(String) does not support all HTML tags. In this very case, <ul> and <li> are not supported.
From the source code I have built a list of allowed HTML tags:
br
p
div
em
b
strong
cite
dfn
i
big
small
font
blockquote
tt
monospace
a
u
sup
sub
So you better use WebView and ...
Comma in C/C++ macro
... angle brackets can also represent (or occur in) the comparison operators <, >, <= and >=, macro expansion can't ignore commas inside angle brackets like it does within parentheses. (This is also a problem for square brackets and braces, even though those usually occur as balanced pairs...