English 中文(简体)
C++ 普通类
原标题:C++ Sort Class Type Vector

我有一个叫做“Reipes.h”的构件和一个称为vector<Recipes> recipes/code>的病媒。 病媒中包含1英寸和2条形状(显示che名称和指示)。 然而,我想通过扼杀性格来打上整个光天线。 我试图这样做。

sort(recipes.begin(),recipes.end(),compare);
bool Menu::compare(const recipes* lhs, const recipes* rhs)

但它说,“reci”并非一种名称。 我如何对待这一病媒?

最佳回答

从你登出的法典的非常短的缩略语来看,可以认为你首先使用<代码>recipes,然后作为物体使用。 你的比较功能可能希望成为以下参数:<代码>Recipes > const&。 请注意,如果操作不取决于<代码>Menu的类别,最好将这一功能宣布为static member function。

功能签名应为:

static bool Menu::compare(const Recipes& lhs, const Recipes& rhs)

届时,你将利用这一方法:

sort(recipes.begin(),recipes.end(),compare); ...or...
sort(recipes.begin(),recipes.end(),&Menu::compare);

最后两个发言都是一样的,我认为后面两个发言对<代码>compare更为明确。

问题回答

暂无回答




相关问题
Undefined reference

I m getting this linker error. I know a way around it, but it s bugging me because another part of the project s linking fine and it s designed almost identically. First, I have namespace LCD. Then I ...

C++ Equivalent of Tidy

Is there an equivalent to tidy for HTML code for C++? I have searched on the internet, but I find nothing but C++ wrappers for tidy, etc... I think the keyword tidy is what has me hung up. I am ...

Template Classes in C++ ... a required skill set?

I m new to C++ and am wondering how much time I should invest in learning how to implement template classes. Are they widely used in industry, or is this something I should move through quickly?

Print possible strings created from a Number

Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone s keypad. i.e. for 1,0-> No Letter for 2->...

typedef ing STL wstring

Why is it when i do the following i get errors when relating to with wchar_t? namespace Foo { typedef std::wstring String; } Now i declare all my strings as Foo::String through out the program, ...

C# Marshal / Pinvoke CBitmap?

I cannot figure out how to marshal a C++ CBitmap to a C# Bitmap or Image class. My import looks like this: [DllImport(@"test.dll", CharSet = CharSet.Unicode)] public static extern IntPtr ...

Window iconification status via Xlib

Is it possible to check with the means of pure X11/Xlib only whether the given window is iconified/minimized, and, if it is, how?

热门标签