containers

Twitter Bootstrap Containers

由 瘦欲@ 提交于 2019-12-01 02:27:57
Ive been using bootstrap for a few months and am looking to clarify something as part of best practices. My question is do I create a container for each row or just one big container for the whole page. Example1 (Closed Containers) <div class="container"> <div class="row"> <div class="span8 offest2"> <h1>Content</h1> </div> </div> </div> <div class="container"> <div class="row"> <div class="span8 offest2"> <h1>More Content</h1> </div> </div> </div> Example 2 (1 large container) <div class="container"> <div class="row"> <div class="span8 offest2"> <h1>Content</h1> </div> </div> <div class="row"

Difference between RDF Containers and Collections?

由 对着背影说爱祢 提交于 2019-12-01 02:05:57
问题 I have read from a book The difference between containers and collections lies in the fact that containers are always open (i.e., new members may be added through additional RDF statements) and collections may be closed. I don't understand this difference clearly. It says that no new members can be added to a collection. What if I change the value of the last rdf:rest property from rdf:nil to _:xyz and add _:xyz rdf:first <ex:aaa> . _:xyz rdf:rest rdf:nil . I am thus able to add a new member

Looking for a data container with O(1) indexing and O(log(n)) insertion and deletion

由 情到浓时终转凉″ 提交于 2019-12-01 01:47:25
问题 I'm not sure if it's possible but it seems a little bit reasonable to me, I'm looking for a data structure which allows me to do these operations: insert an item with O(log n) remove an item with O(log n) find/edit the k'th-smallest element in O(1), for arbitrary k (O(1) indexing) of course editing won't result in any change in the order of elements. and what makes it somehow possible is I'm going to insert elements one by one in increasing order. So if for example I try inserting for the

How to extract metafile from TOleContainer?

由 ≡放荡痞女 提交于 2019-11-30 22:33:22
I have a Delphi (BDS 2006) application with TOleContainer control. It has an OLE object inside, MS Equation formula (name 'Equation.3') from MS Office 2003. How can I extract the vector metafile from the formula image to insert it into web-page or some other document without OLE support? TOleContainer has only 'Equation.3' objects inside, no other possibilities. I've tried to use .Copy method to make it through clipboard, but it's copied an empty image. OLE Container has on underlying IOLEObject interface you can access. You can pass that to the OLEDraw function with your own canvas. You could

Twitter Bootstrap Containers

由 拜拜、爱过 提交于 2019-11-30 22:03:34
问题 Ive been using bootstrap for a few months and am looking to clarify something as part of best practices. My question is do I create a container for each row or just one big container for the whole page. Example1 (Closed Containers) <div class="container"> <div class="row"> <div class="span8 offest2"> <h1>Content</h1> </div> </div> </div> <div class="container"> <div class="row"> <div class="span8 offest2"> <h1>More Content</h1> </div> </div> </div> Example 2 (1 large container) <div class=

STL container function return values

由 限于喜欢 提交于 2019-11-30 19:36:46
When looking over the member functions of the STL containers, an odd thought occurred to me. Why don't functions like std::vector<T>::push_back(T) not have an (optional) return value (iterator or even a reference to the appended object)? I know std::string functions like insert and erase return iterators, but that's for obvious reasons. I'd think it'd often save a second line of code that often follows these function calls. I'm sure the designers of C++ have a very good reason, please enlighten me :) UPDATE : I'm including a real-world code example here where it could reduce code length: if( m

“CopyConstructible” requirement for C++ stl container element

由 本秂侑毒 提交于 2019-11-30 19:05:12
Regarding to the requirement for C++ stl container element, the standard says: the element type should be CopyConstructible, and there is a table for CopyConstructible requirements. Also by various books (Josuttis, etc.), the generated copy should be "equivalent to" the source. I think I need some clarity here. What is exactly "equivalent to"? Also I am a bit confused with the relation between the "CopyConstructible" and the "deep/shallow copy". In general, a copy constructor is either shallow copy or deep copy. So which one applies to the "CopyConstructible", and which does not? Thanks for

Changing value_type of a given STL container

由 江枫思渺然 提交于 2019-11-30 18:50:43
问题 Suppose, I've a STL container type (not object), say vector<A> . Now it's value_type is A , so I want to change it to B . Basically, I want a class template of this form, or a variant of it: template<typename container, typename new_value_type> struct change_value_type { typedef /*....*/ new_container; }; So that I can use it in the following way: typename change_value_type<vector<A>, B>::new_container vectorOfB; vectorOfB.push_back(B()); vectorOfB.push_back(B()); vectorOfB.push_back(B()); /

vector<unique_ptr<A> > using initialization list

由 ▼魔方 西西 提交于 2019-11-30 18:48:15
问题 I have encountered an error: call to implicitly-deleted copy constructor of 'std::__1::unique_ptr >' when compile code similar to below using c++ -std=c++14 unique_ptr_vector.cpp -o main Here is a simplified version: header file 'my_header.h': #include <iostream> #include <string> #include <memory> #include <vector> class A{ public: A() : n(0) {} A(int val) : n(val) {} A(const A &rhs): n(rhs.n) {} A(A &&rhs) : n(std::move(rhs.n)) {} A& operator=(const A &rhs) { n = rhs.n; return *this; } A&

How can I find an element in a set which contains pointers to the elements?

由 五迷三道 提交于 2019-11-30 17:41:46
问题 Edit: I fixed my mistake: I'm using a set and not a vector . Please consider the following example code: set<Foo *> set_of_foos; set_of_foos.insert(new Foo(new Bar("x"))); set_of_foos.insert(new Foo(new Bar("y"))); [...] // The way a "foo" is found is not important for the example. bool find_foo(Foo *foo) { return set_of_foos.end() != set_of_foos.find(foo); } Now when I call: find_foo(new Foo(new Bar("x"))); the function returns false since what I'm looking for can't be found. The reason is
订阅 containers