nuxlli

Sublime Text 2 - Useful Shortcuts

Tested in Mac OS X: super == command

Open/Goto

---

• super+t: go to file
• super+ctrl+p: go to project
• super+r: go to methods

bradland

# This is a short collection of tools that are useful for managing your
# known_hosts file. In this case, I'm using the '-f' flag to specify the
# global known_hosts file because I'll be adding many deploy users on this
# system. Simply omit the -f flag to operate on ~/.ssh/known_hosts

# Add entry for host
ssh-keyscan -H github.com >> /etc/ssh/ssh_known_hosts

# Scan known hosts
ssh-keygen -f /etc/ssh/ssh_known_hosts -F github.com

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

kartikkukreja

update(ft, p, v):
  for (; p <= N; p += p&(-p))
    ft[p] += v 	 

# Add v to A[a...b] 
update(a, b, v): 	
  update(B1, a, v) 	
  update(B1, b + 1, -v) 	
  update(B2, a, v * (a-1)) 	
  update(B2, b + 1, -v * b) 	 

MohamedBassem

Codeforces CSRF

ar-pa

// In the name of Allah.
// We're nothing and you're everything.
// Ya Ali!
 
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
const int maxn = 1e2 + 14, lg = 15;

aaronpolhamus

import os 
import sys
import json
import model_control 
from keras.models import Sequential
from keras.layers import Dense, Dropout, Activation, Flatten
from keras.layers import Convolution2D, MaxPooling2D
from keras.optimizers import SGD
import numpy as np
from numpy import loadtxt, asarray

moyix

void lava_set(unsigned int bn, unsigned int val);
extern unsigned int lava_get(unsigned int) ;
static unsigned int lava_val[1000000] = {0};
void lava_set(unsigned int bug_num, unsigned int val);
void lava_set(unsigned int bug_num, unsigned int val) { lava_val[bug_num] = val; }
unsigned int lava_get(unsigned int bug_num);
unsigned int lava_get(unsigned int bug_num) { return lava_val[bug_num]; }
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

delcypher

#include "klee/klee.h"
#include <assert.h>
#include <inttypes.h>
#include <stdio.h>
//types and constants used in the functions below

const uint64_t m1  = 0x5555555555555555; //binary: 0101...
const uint64_t m2  = 0x3333333333333333; //binary: 00110011..
const uint64_t m4  = 0x0f0f0f0f0f0f0f0f; //binary:  4 zeros,  4 ones ...
const uint64_t m8  = 0x00ff00ff00ff00ff; //binary:  8 zeros,  8 ones ...

simonw

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb