On 2017-03-28 I visited a local customer who have been using our CRM on-Premise since 2010. The reason for this visit is that they have finished some reorganization and there are some new business pro
go聖經裏有一段查找重複的行的代碼,發現輸入無反應不會打印重複行數據
// Dup1 prints the text of each line that appears more than
// once in the standard input, preceded by its count.
package main
import (
"bufio"
"fmt"
"o
前言
新版Chrome增加了一個功能 SameSite,可以禁止iframe設置cookies。
如果我們在iframe中需要登錄驗證,那就比較麻煩。可以通過禁用這個功能解決。
例子
瀏覽器控制枱提示:
A cookie associated with a cross-site resource at http://58.211.78.91/ was set without the `SameSi
最近有個問題出現長達一個月,經過兩次修改未能解決,大致場景如下:
一個多態對象Children被註冊回調(m_observer對象位於基類Base中),正好在析構函數裏面回調,導致crash。
class Base {
// ...
protected:
std::shared_ptrObserver m_observer;
}
class Children: public Ba
我們都知道call,apply,bind函數都是為了改變this的指向,那麼對於三種函數有什麼相同點有什麼不太點或者有什麼應用呢?下面我們來進行介紹
call與apply函數
在javascript種,call,apply的出現是為了改變函數體內部this的指向,下面我們來看一個栗子,並從中進行分析。
var a = "我是window的小a";
var obj =
使用 npx create-react-app 項目名 新建項目時,報錯;
yarn add v1.22.4
info No lockfile found.
[1/4] 🔍 Resolving packages...
info There appears to be trouble with your network connection. Retrying...
info There app