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

octocat

# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so

# Packages #

joyrexus

Sans jQuery

Events

// jQuery
$(document).ready(function() {
  // code
})

kauffmanes

Thanks everyone for commenting/contributing! I made this in college for a class and I no longer really use the technology. I encourage you all to help each other, but I probably won't be answering questions anymore.

This article is also on my blog, too.

Note: $ denotes the start of a command. Don't actually type this.

Steps to Install Anaconda on Windows Ubuntu Terminal

1. Install WSL (Ubuntu for Windows - can be found in Windows Store). I recommend the latest version (I'm using 18.04) because there are some bugs they worked out during 14/16 (microsoft/WSL#785)
2. Go to https://repo.continuum.io/archive to find the list of Anaconda releases
3. Select the release you want. I have a 64-bit computer, so I chose the latest release ending in x86_64.sh. If I had a 32-bit computer, I'd select the x86.sh version. If you accidentally try to install the wrong one, you'll get a warning in the terminal. I chose `Ana

EvanHahn

/*

JavaScript Caesar shift
by Evan Hahn (evanhahn.com)

"Encrypt" like this:

    caesarShift('Attack at dawn!', 12);    // Returns "Mffmow mf pmiz!"

And "decrypt" like this:

umidjons

Creating PDF thumbnails in PHP

Install Ghostscript

Download and install right version of ghostscript. In my case my PHP was x86 architecture, so I download Ghostscript 9.14 for Windows (32 bit).

Enable ImageMagick

zcaceres

Nested Routers in Express.js

Express makes it easy to nest routes in your routers. But I always had trouble accessing the request object's .params when you had a long URI with multiple parameters and nested routes.

Let's say you're building routes for a website www.music.com. Music is organized into albums with multiple tracks. Users can click to see a track list. Then they can select a single track and see a sub-page about that specific track.

At our application level, we could first have a Router to handle any requests to our albums.

const express = require('express');

bmabir17

import tensorflow as tf
import numpy as np
import mrcnn.model as modellib # https://github.com/matterport/Mask_RCNN/
from mrcnn.config import Config
import keras.backend as keras

PATH_TO_SAVE_FROZEN_PB ="./"
FROZEN_NAME ="saved_model.pb"

korakot

from google.colab import auth
auth.authenticate_user()

!echo "deb http://packages.cloud.google.com/apt gcsfuse-bionic main" > /etc/apt/sources.list.d/gcsfuse.list
!curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
!apt -qq update
!apt -qq install gcsfuse

!mkdir co-lab
!gcsfuse co-lab /content/co-lab

emmabostian

Data Structures
- Stacks
- Queues
- Linked lists
- Graphs
- Trees
- Tries

Concepts
- Big O Notation