hankliu5

import ast


class CrazyTransformer(ast.NodeTransformer):
    def visit_BinOp(self, node):
        print(node.__dict__)
        node.op = ast.Mult()
        print(node.__dict__)
        return node

hankliu5

If:

- you add and commit with the wrong email address in git, and
- your remote has a hook set up to prevent you from pushing with the bad address

Then you need to amend the author of your commit before push can succeed:

1. fix your email address in git config:

$ git config user.name "Your Name"

hankliu5

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/stat.h>

hankliu5

array = Array.new()
t1 = Thread.new { array.append(4) }
t2 = Thread.new { array.append(7) }
t1.join
t2.join
puts array.size

hankliu5

from threading import Thread
import time

def count():
    i = 0
    for _ in range(50000000):
        i += 1
    return True

def main():

hankliu5

from threading import Thread
import time

def count():
    i = 0
    for _ in range(50000000):
        i += 1
    return True

def main():

hankliu5

#include <stdio.h>

int main(void)
{
    int a[3];

    for (int i = 0; i <= 4096; i++)
    {
        printf("address of a[%d] = %p, a[0] = %p\n", i,  &a[i], &a[0]);
        a[i] = i;

hankliu5

#include <stdio.h>
#include <string.h>

int main(void)
{
    int a[3];
    int b[3];
    int i;
    b[0] = 1;

hankliu5

#include <fcntl.h> /* O_ constants */
#include <unistd.h> /* ftruncate */
#include <sys/mman.h> /* mmap */
#include <string.h>

int main() {
    int fd;
    char *map;
    char *name = "test.txt";

hankliu5

import sys
import collections

class Buf():
    def __init__(self, buf=0, size=0):
        self.buf = buf
        self.size = size

    def __repr__(self):
        return 'buf: {}, size: {}'.format(self.buf, self.size)