ttanay

## latency.markdown

      
              2 files
            
          
              743 forks
            
          
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              4417 stars
            
          
                hellerbarde
                / latency.markdown
            
            
              Created
              May 31, 2012 13:16
                — forked from jboner/latency.txt
            
              
                Latency numbers every programmer should know
              
          
    Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

  
## gist:3378676
(grammar ((Expression < (/ String List Atom)))
         ((String     <- (:"\"") "[^\"]*" (: "\"")))
         ((List       < (: "\\(") (* Expression) (: "\\)"))
                        `($(car List)
                          $(cdr List)))
         ((Atom       <- (/ Number Symbol)))
         ((Number     <- "[+\\-]?[0-9]+(\\.[0-9]*)?")
                         `($(car Number)
                           ($(str->num (caadr Number)))))
         ((Symbol     <- (! Number) "[^\\(\\)\"';\\s]+")

## sql-mongo_comparison.md

      
              1 file
            
          
              191 forks
            
          
              17 comments
            
          
              426 stars
            
          
                aponxi
                / sql-mongo_comparison.md
            
            
              Last active
              February 21, 2024 11:56
            
              
                MongoDb Cheat Sheets
              
          
    SQL to MongoDB Mapping Chart

SQL to MongoDB Mapping Chart¶

In addition to the charts that follow, you might want to consider the
Frequently Asked Questions section for a selection of common questions about MongoDB.

Executables¶

The following table presents the MySQL/Oracle executables and the
corresponding MongoDB executables.

  
## bobp-python.md

      
              1 file
            
          
              570 forks
            
          
              132 comments
            
          
              3235 stars
            
          
                sloria
                / bobp-python.md
            
            
              Last active
              June 18, 2024 08:18
            
              
                A "Best of the Best Practices" (BOBP) guide to developing in Python.
              
          
    The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.
In General

Values


"Build tools for others that you want to be built for you." - Kenneth Reitz
"Simplicity is alway better than functionality." - Pieter Hintjens


## sidekiq_monitoring
stats = Sidekiq::Stats.new

stats.queues

stats.enqueued

stats.processed

stats.failed

## ObjectifyLoaderContextListener.java
import com.google.appengine.api.ThreadManager;
import com.googlecode.objectify.ObjectifyFactory;
import com.googlecode.objectify.ObjectifyService;
import com.googlecode.objectify.annotation.Entity;
import org.reflections.Reflections;
import org.reflections.util.ClasspathHelper;
import org.reflections.util.ConfigurationBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

## http-server.py
#!/usr/bin/env python

from twisted.web import server, resource
from twisted.internet import reactor, defer
from pprint import pprint
import base64


class DummyServer(resource.Resource):
    isLeaf = True

## Free O'Reilly Books.md

      
              2 files
            
          
              172 forks
            
          
              37 comments
            
          
              485 stars
            
          
                augbog
                / Free O'Reilly Books.md
            
            
              Last active
              May 14, 2024 10:27
            
              
                Free O'Reilly Books
              
          
    Free O'Reilly books and convenient script to just download them.
Thanks /u/FallenAege/ and /u/ShPavel/ from this Reddit post
How to use:

Take the download.sh file and put it into a directory where you want the files to be saved.
cd into the directory and make sure that it has executable permissions (chmod +x download.sh should do it)
Run ./download.sh and wee there it goes. Also if you do not want all the files, just simply comment the ones you do not want.


## install.sh
#!/usr/bin/env bash
# https://developers.supportbee.com/blog/setting-up-cucumber-to-run-with-Chrome-on-Linux/
# https://gist.github.com/curtismcmullan/7be1a8c1c841a9d8db2c
# https://stackoverflow.com/questions/10792403/how-do-i-get-chrome-working-with-selenium-using-php-webdriver
# https://stackoverflow.com/questions/26133486/how-to-specify-binary-path-for-remote-chromedriver-in-codeception
# https://stackoverflow.com/questions/40262682/how-to-run-selenium-3-x-with-chrome-driver-through-terminal
# https://askubuntu.com/questions/760085/how-do-you-install-google-chrome-on-ubuntu-16-04

# Versions
CHROME_DRIVER_VERSION=`curl -sS https://chromedriver.storage.googleapis.com/LATEST_RELEASE`

## .tmux.conf
# Set the control character to Ctrl+Spacebar (instead of Ctrl+B)
set -g prefix C-space
unbind-key C-b
bind-key C-space send-prefix

# Set new panes to open in current directory
bind c new-window -c "#{pane_current_path}"
bind '"' split-window -c "#{pane_current_path}"
bind % split-window -h -c "#{pane_current_path}"
	(grammar ((Expression < (/ String List Atom)))
	((String <- (:"\"") "[^\"]*" (: "\"")))
	((List < (: "\\(") (* Expression) (: "\\)"))
	`($(car List)
	$(cdr List)))
	((Atom <- (/ Number Symbol)))
	((Number <- "[+\\-]?[0-9]+(\\.[0-9]*)?")
	`($(car Number)
	($(str->num (caadr Number)))))
	((Symbol <- (! Number) "[^\\(\\)\"';\\s]+")
	stats = Sidekiq::Stats.new

	stats.queues

	stats.enqueued

	stats.processed

	stats.failed
	import com.google.appengine.api.ThreadManager;
	import com.googlecode.objectify.ObjectifyFactory;
	import com.googlecode.objectify.ObjectifyService;
	import com.googlecode.objectify.annotation.Entity;
	import org.reflections.Reflections;
	import org.reflections.util.ClasspathHelper;
	import org.reflections.util.ConfigurationBuilder;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;
	#!/usr/bin/env python

	from twisted.web import server, resource
	from twisted.internet import reactor, defer
	from pprint import pprint
	import base64


	class DummyServer(resource.Resource):
	isLeaf = True
	#!/usr/bin/env bash
	# https://developers.supportbee.com/blog/setting-up-cucumber-to-run-with-Chrome-on-Linux/
	# https://gist.github.com/curtismcmullan/7be1a8c1c841a9d8db2c
	# https://stackoverflow.com/questions/10792403/how-do-i-get-chrome-working-with-selenium-using-php-webdriver
	# https://stackoverflow.com/questions/26133486/how-to-specify-binary-path-for-remote-chromedriver-in-codeception
	# https://stackoverflow.com/questions/40262682/how-to-run-selenium-3-x-with-chrome-driver-through-terminal
	# https://askubuntu.com/questions/760085/how-do-you-install-google-chrome-on-ubuntu-16-04

	# Versions
	CHROME_DRIVER_VERSION=`curl -sS https://chromedriver.storage.googleapis.com/LATEST_RELEASE`
	# Set the control character to Ctrl+Spacebar (instead of Ctrl+B)
	set -g prefix C-space
	unbind-key C-b
	bind-key C-space send-prefix

	# Set new panes to open in current directory
	bind c new-window -c "#{pane_current_path}"
	bind '"' split-window -c "#{pane_current_path}"
	bind % split-window -h -c "#{pane_current_path}"