| function map (arr, func) { | |
| return Promise.resolve().then(function () { | |
| return arr.map(function (el) { return func(el) }) | |
| }).all() | |
| } | |
| function mapSeries (arr, func) { | |
| let currentPromise = Promise.resolve() | |
| let promises = arr.map(function (el) { | |
| return currentPromise = currentPromise.then(function () { |
| // data comes from here http://stat-computing.org/dataexpo/2009/the-data.html | |
| // download 1994.csv.bz2 and unpack by running: cat 1994.csv.bz2 | bzip2 -d > 1994.csv | |
| // 1994.csv should be ~5.2 million lines and 500MB | |
| // importing all rows into leveldb took ~50 seconds on my machine | |
| // there are two main techniques at work here: | |
| // 1: never create JS objects, leave the data as binary the entire time (binary-split does this) | |
| // 2: group lines into 16 MB batches, to take advantage of leveldbs batch API (byte-stream does this) | |
| var level = require('level') |
| var extend = function(a, b) { | |
| for (var i in b) | |
| a[i] = b[i]; | |
| return a; | |
| }; | |
| var fluent = function(f) { | |
| return function() { | |
| var clone = extend(Object.create(null), this); | |
| f.apply(clone, arguments); |
This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.
The script is here:
#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"
The prep-script.sh will setup the latest Node and install the latest perf version on your Linux box.
When you want to generate the flame graph, run the following (folder locations taken from install script):
sudo sysctl kernel.kptr_restrict=0
# May also have to do the following:
# (additional reading http://unix.stackexchange.com/questions/14227/do-i-need-root-admin-permissions-to-run-userspace-perf-tool-perf-events-ar )
sudo sysctl kernel.perf_event_paranoid=0
| ### | |
| # Node.js app Docker file | |
| # | |
| # Some basic build instructions: | |
| # ``` | |
| # # you should delete node_modules b/c you don't want that copied during 'ADD' | |
| # docker build -t thom-nic/node-bootstrap . | |
| # # run a shell in the container to inspect the environment (as root): | |
| # docker run --rm -itu root thom-nic/node-bootstrap /bin/bash | |
| # ``` |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
| // Copyright 2016 Jeremie Miserez <[email protected]> | |
| // | |
| // MIT License | |
| // Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
| // The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF O |
| #!/bin/bash | |
| # | |
| # The reason of creating this script is that Endpoint Security VPN installs it's own application firewall kext cpfw.kext | |
| # which prevents for example PPTP connections from this computer, which is not appropriate if you need subj connection just | |
| # from time to time | |
| # | |
| # Usage: ./checkpoint.sh | |
| # | |
| # The script checks if Enpoint Security VPN is running. If it is, then it shuts it down, if it is not, it fires it up. | |
| # Or, make an Automator action and paste the script. |
| #!/usr/bin/env bash | |
| # Colours picked from https://robinpowered.com/blog/best-practice-system-for-organizing-and-tagging-github-issues/ | |
| ### | |
| # Label definitions | |
| ### | |
| declare -A LABELS | |
| # Platform |