目录
lambda表达式
- 也就是匿名函数,我们可以在全局区、函数内、就像声明变量一样来声明一个函数出来用,而普通函数并不能在函数内声明。
- 示例:
int main() {
// 声明
auto fun = []() {
cout << 123 << endl;
};
// 调用
fun();
return 0;
}
递归
- 对于普通函数,递归调用很简单,我们可以在函数内直接调用函数自己。
int hello(int value) {
if(value < 0) {
return 0;
}
cout << value << endl;
hello(value - 1);
}
lambda递归
- 对于 lambda 实现递归,由于它是匿名函数,本身没有函数名,我们是把他赋值给了一个变量。
- 但要注意的是,像下面这样直接调用是不行的:
- 因为在 声明lambda表达式时,变量fun应当视为还没声明,fun需要等lambda表达式构造完成后赋值过来才算完成声明,因此在 lambda 内是不能访问 fun 这个变量的。
int main() {
auto fun = [&fun](int value) {
if(value < 0) {
return;
}
cout << value << endl;
// 这里是不行的!!!
fun(value - 1);
};
fun(10);
return 0;
}
- 既然如此,我们可以在lambda表达式前先声明一个 “容器”,让它去保存lambda,并且在声明 lambda时,由于这个容器是之前声明好的,因此可以引用捕获它,然后在 lambda内取到自己调用即可:
#include <iostream>
#include <functional>
using namespace std;
int main() {
int i = 10;
std::function<void()> myfun;
myfun = [&myfun, &i]() {
if (i < 0) {
return;
}
cout << i << endl;
--i;
myfun();
};
myfun();
return 0;
}
https://edpillpharmacy.store/# ed medicines online
https://edpillpharmacy.store/# cheapest ed pills
Tints of colors are made by adding white (e.g., red-orange plus white gives us coral).
mexican pharmaceuticals online: Mexico pharmacy online – mexican mail order pharmacies
Hi there! This blog post could not be written much better! Looking at this article reminds me of my previous roommate! He always kept talking about this. I most certainly will forward this article to him. Fairly certain he’s going to have a very good read. Thanks for sharing!
Hoxsin Bussan Co., Ltd.
With this in mind, economic development is typically associated with improvements in a variety of areas or indicators (such as literacy rates, life expectancy, and poverty rates), that may be causes of economic development rather than consequences of specific economic development programs.
Hello! I simply would like to give you a big thumbs up for your great info you have right here on this post. I am coming back to your site for more soon.
Very good post. I am going through some of these issues as well..
mexican pharmaceuticals online: п»їbest mexican online pharmacies – mexico drug stores pharmacies
Thanks I have recently been looking for info about this subject for a while and yours is the greatest I have discovered so far However what in regards to the bottom line Are you certain in regards to the supply
indian pharmacies safe: Indian pharmacy international shipping – buy prescription drugs from india
http://indiapharmacy.shop/# Online medicine order
https://mexicopharmacy.win/# mexico pharmacies prescription drugs
Hi, I do think this is an excellent website. I stumbledupon it 😉 I may return once again since I book-marked it. Money and freedom is the greatest way to change, may you be rich and continue to guide other people.
Hi! I just wish to offer you a huge thumbs up for your great information you have here on this post. I will be coming back to your website for more soon.
top 10 pharmacies in india: Cheapest online pharmacy – Online medicine order
best online pharmacies in mexico: Best online Mexican pharmacy – mexican border pharmacies shipping to usa
I really love your website.. Great colors & theme. Did you create this amazing site yourself? Please reply back as I’m trying to create my very own blog and would love to find out where you got this from or exactly what the theme is named. Cheers!
Hello there, I think your web site might be having internet browser compatibility problems. When I take a look at your blog in Safari, it looks fine however, when opening in I.E., it’s got some overlapping issues. I simply wanted to provide you with a quick heads up! Besides that, fantastic website!
Having read this I thought it was really informative. I appreciate you taking the time and effort to put this information together. I once again find myself spending way too much time both reading and leaving comments. But so what, it was still worthwhile!
http://indiapharmacy.shop/# buy prescription drugs from india
indianpharmacy com: Cheapest online pharmacy – online pharmacy india
http://mexicopharmacy.win/# medicine in mexico pharmacies
discount ed meds: Cheap ED pills online – best online ed treatment
I seriously love your website.. Pleasant colors & theme. Did you build this amazing site yourself? Please reply back as I’m planning to create my very own site and want to learn where you got this from or what the theme is called. Appreciate it!
É como se você lesse minha mente Você parece saber muito sobre isso, como se você tivesse escrito o livro nele ou algo assim. Acho que você pode fazer com algumas fotos para transmitir um pouco a mensagem, mas fora isso, este é um blog fantástico. ótima leitura, certamente voltarei
best ed meds online: Cheapest online ED treatment – erectile dysfunction medications online
top online pharmacy india: Top online pharmacy in India – indian pharmacies safe
https://edpillpharmacy.store/# online ed drugs
Hi! I could have sworn I’ve visited this site before but after going through many of the articles I realized it’s new to me. Regardless, I’m definitely delighted I stumbled upon it and I’ll be bookmarking it and checking back regularly.
http://mexicopharmacy.win/# mexican drugstore online
Excellent site you have got here.. It’s difficult to find quality writing like yours nowadays. I honestly appreciate individuals like you! Take care!!
However, each client is different and has unique needs when it comes to portfolio management, and this is where Strategic Wealth Management from Santa Barbara comes through in spades.
cost of ed meds: online ed prescription same-day – buying ed pills online
mexico drug stores pharmacies: mexico pharmacy win – mexican drugstore online
The very next time I read a blog, Hopefully it doesn’t fail me just as much as this particular one. I mean, I know it was my choice to read through, nonetheless I genuinely thought you would have something useful to talk about. All I hear is a bunch of complaining about something that you could possibly fix if you were not too busy searching for attention.
I’ve read a few excellent stuff here. Certainly value bookmarking for revisiting. I surprise how a lot attempt you place to create one of these fantastic informative web site.
It’s really a great and helpful piece of information. I am glad that you shared this helpful information with us. Please keep us informed like this. Thank you for sharing.
For example, a long-term goal would be to “retire at age 65 with a personal net worth of $1,000,000”, while a short-term goal would be to “save up for a new computer in the next month.” Setting financial goals helps to direct financial planning by determining the parameters and expectations one aims to achieve.
Loved this article. It’s very comprehensive and filled with useful details. Excellent work!
This article is amazing! Filled with useful insights and extremely clear. Thank you for sharing this.
cheap ed medicine: online ed medicine – affordable ed medication
ed medications cost: Best ED pills non prescription – best online ed meds
These future profits also have to be discounted to their present value.
The nominal value of the contract would be $44,450 (5,000 bushels x $8.89).
Professionals present data or information in a maze of rows and columns.
Older issues have names such as “Treasury Stock” and newer issues are called “Treasury Gilt”.
Phishers plan, set up and execute attacks to steal personal and financial data, often using deceptive tactics like spoofed email addresses and obfuscated links.
http://mexicopharmacy.win/# buying prescription drugs in mexico