Shitaibin

// SM2Sign signs
func SM2Sign(signKey interface{}, msg []byte) ([]byte, error) {
	sm2Eckey := signKey.(*Sm2EcKey)

	hash := sm3.New()
	hash.Write(msg)
	h := hash.Sum(nil)

	sig := make([]byte, 128, 128)

Shitaibin

提示性能

增加函数

func PipelineFan() {
	in := producer(10)

	// FAN-OUT
	c1 := square(in)

Shitaibin

➜  awesome git:(master) ✗ time go run hi.go
go run hi.go  10.49s user 4.42s system 303% cpu 4.917 total
➜  awesome git:(master) ✗ time go run hi-simple.go
go run hi-simple.go  4.81s user 2.65s system 176% cpu 4.233 total

Shitaibin

# I found grep is very slow for big files, I made a simpe python version

import sys


def search(file_name, wants):
    with open(file_name, 'r') as file:
        for line in file:
            for w in wants:
                if w in line:

Shitaibin

## unzip and go into googletest directory
➜  Downloads unzip googletest-master.zip 
Archive:  googletest-master.zip
aa148eb2b7f70ede0eb10de34b6254826bfb34f4
   creating: googletest-master/
  ...
  inflating: googletest-master/travis.sh  
➜  Downloads 
➜  Downloads ls
googletest-master  googletest-master.zip  pixman_0.30.2.orig.tar.gz  redis-3.2.0  redis-3.2.0.tar.gz

Shitaibin

#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <sys/resource.h>
#include <sys/types.h>


typedef struct s_block* t_block;
struct s_block {
    size_t size;

Shitaibin

// 参考《C++编程思想卷2》

#include <iostream>
#include <string>

using namespace std;

string& replace_all(string& context, const string& from, const string& to) {
    size_t look_here = 0;
    size_t found_here;

Shitaibin

// 最长递增子数列

// O(N^2)
// dp[i] = max{dp[j]+1 | [i] > [j], 0<=j<i}
// result: max{dp[i] | 0<=i<n}

class Solution {
    static const int bufsize = 10000;
    int dp[bufsize];