| # nuget.exe install RazorEngine | |
| $scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path | |
| Add-Type -LiteralPath "${scriptDir}\Microsoft.AspNet.Razor.3.0.0\lib\net45\System.Web.Razor.dll" | |
| Add-Type -LiteralPath "${scriptDir}\RazorEngine.3.4.1\lib\net45\RazorEngine.dll" | |
| # テンプレートに渡すデータ | |
| $array = @(1; 2; 3) | |
| $table = @{ Name = "F#"; ShowDetail = $true; Array = $array } |
| let | |
| Value.WaitFor = (producer as function, interval as function, optional count as number) as any => | |
| let | |
| list = List.Generate( | |
| () => {0, null}, | |
| (state) => state{0} <> null and (count = null or state{0} < count), | |
| (state) => if state{1} <> null | |
| then {null, state{1}} | |
| else {1 + state{0}, Function.InvokeAfter(() => producer(state{0}), interval(state{0}))}, | |
| (state) => state{1}) |
| let | |
| Web.MultiPartPost = (url as text, parts as record) as binary => | |
| let | |
| unique = Text.NewGuid(), | |
| boundary = "--" & unique, | |
| crlf = "#(cr)#(lf)", | |
| item = (name, value) => | |
| let | |
| filename = Value.Metadata(value)[name]?, | |
| contentType = Value.Metadata(value)[type]?, |
My very first exercise with TopoJSON and D3 - just a municipal map showing some basic information when you hover over the individual municipalities. Nothing really fancy, but, hey, you have got to start somewhere...
###Steps followed to create the file nlgemeenten2009.json:
Step 1. download input file gem_2009_gn3.shp from the Dutch Statistical Office: Wijk- en Buurtkaart 2009
Step 2. convert shapefile to GeoJSON with ogr2ogr:
ogr2ogr \
-f GeoJSON \
Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).
The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int
| license: mit | |
| scrolling: true | |
| height: 300 |
More details - http://blog.gbaman.info/?p=791
For this method, alongside your Pi Zero, MicroUSB cable and MicroSD card, only an additional computer is required, which can be running Windows (with Bonjour, iTunes or Quicktime installed), Mac OS or Linux (with Avahi Daemon installed, for example Ubuntu has it built in).
1. Flash Raspbian Jessie full or Raspbian Jessie Lite onto the SD card.
2. Once Raspbian is flashed, open up the boot partition (in Windows Explorer, Finder etc) and add to the bottom of the config.txt file dtoverlay=dwc2 on a new line, then save the file.
3. If using a recent release of Jessie (Dec 2016 onwards), then create a new file simply called ssh in the SD card as well. By default SSH i
| license: CC0-1.0 | |
| border: none |
Update on Nov 30, 2025: This Gist is nearly eight years old! These instructions worked back in 2018 for the Pi 3, but recent comments suggest that they may not be sufficient on more recent Pi models and newer versions of Raspberry Pi OS. Be advised.
On my RetroPie machine I wanted a hardware volume knob — the games I play use a handful of emulators, and there's no unified software interface for controlling the volume. The speakers I got for my cabinet are great, but don't have their own hardware volume knob. So with a bunch of googling and trial and error, I figured out what I need to pull this off: a rotary encoder and a daemon that listens for the signals it sends.
| // TODO add colors | |
| sample = { a: { b: { c: 1, moo: [3,2,1] } }, z: 'zzzz' } | |
| const asciitree = require('ascii-tree'); | |
| function pretty_json(v) { | |
| console.log(JSON.stringify( v, 0, 2 )) | |
| } |
