lexdene

#include<iostream>
#include<string>
#include<time.h>
#include "bigInt.h"
using namespace std;

BigInt::BigInt(){	//构造函数
	head = tail = temp = NULL;
	symbol = '+';
	length = 0;

lexdene

#include <iostream>
using namespace std;

class Date
{
public:
    Date(int y=0, int m=0, int d=0):year(y), month(m), day(d){}
    friend bool operator>(const Date& da, const Date& db);
    int getyear()const;
    int getmonth()const;

lexdene

var i,j;
var result = '';

for(i=2000; i<2100; ++i){
  [1, 3, 5, 7, 8, 10, 12].forEach(function(j){
  d = new Date(i, j - 1);
    if(d.getDay() == 5){
      result += d.getFullYear() + '年' + (d.getMonth() + 1) + '月 ';
    }
  });

lexdene

(setq elephant "elephant form global")

(defun print-elephant ()
  (message elephant)
)

(defun test-let-variable ()
  (print-elephant)
  (message elephant)
  (let ((elephant "elephant from let"))

lexdene

test ?

code

lexdene

优化前:
+----+-------------+------------+--------+---------------+---------+---------+------------------------+------+----------------------------------------------+
| id | select_type | table      | type   | possible_keys | key     | key_len | ref                    | rows | Extra                                        |
+----+-------------+------------+--------+---------------+---------+---------+------------------------+------+----------------------------------------------+
|  1 | SIMPLE      | ttb        | ALL    | NULL          | NULL    | NULL    | NULL                   |   10 | Using where; Using temporary; Using filesort |
|  1 | SIMPLE      | dt         | ALL    | PRIMARY       | NULL    | NULL    | NULL                   |    5 | Using where; Using join buffer               |
|  1 | SIMPLE      | tc         | eq_ref | PRIMARY       | PRIMARY | 4       | tp_db.ttb.topic_id     |    1 |                                              |
|  1 | SIMPLE      | last_reply | eq_ref | PRIMARY       | PRIMARY | 4 

lexdene

class User{
    static public function instance(){
        static my_user = User()
        return my_user;
    }

    public function setToken(token){
        this.token = token
    }

lexdene

for file_path in $(find . -name '*.cpp');do clean_file_path=${file_path:2} ;mv -v $file_path  ${clean_file_path//\//_} ; done


# 第1版
for file_path in $(find Images);do clean_file_path=$file_path ;mv -v $file_path  ${file_path%/*}/${clean_file_path//\//_} ; done

lexdene

#include<iostream>

using namespace std;

class Foo{
public:
    Foo(){
        cout << "Foo constructor" << endl;
    }

lexdene

args = {
    '_id': 'xxx',
    'group': 123
}

cursor = db.table.find(args)
args.pop('_id')
data = list(cursor)

# 这样得到的data是没有_id = 'xxx'这个条件的查询结果