developerfred

Rust

cargo check

Sometimes errors from macro expansion are too opaque to debug. To see errors with the expanded macro set RUSTFLAGS like so:

RUSTFLAGS="-Z external-macro-backtrace" cargo +nightly [test|check]

developerfred

Be Careful with Table Driven Tests and t.Parallel()

We Gophers, love table-driven-tests, it makes our unittesting structured, and makes it easy to add different test cases with ease.

Let’s create our table driven test, for convenience, I chose to use t.Log as the test function. Notice that we don't have any assertion in this test, it is not needed to for the demonstration.

func TestTLog(t *testing.T) {
	t.Parallel()

developerfred

Go (Golang) Standard Library Interfaces (Selected)

This is not an exhaustive list of all interfaces in Go's standard library. I only list those I think are important. Interfaces defined in frequently used packages (like io, fmt) are included. Interfaces that have significant importance are also included.

All of the following information is based on go version go1.8.3 darwin/amd64.

developerfred

class RustNightly < Formula

  url "https://static.rust-lang.org/dist/rust-nightly-x86_64-apple-darwin.pkg", using: :nounzip
  homepage "http://www.rust-lang.org"
  sha1 ""

  version Date.today.to_s

  def install
    system "pkgutil --expand rust-nightly-x86_64-apple-darwin.pkg rn"

developerfred

# Set variables in .bashrc file

# don't forget to change your path correctly!

export GOPATH=$HOME/golang
export GOROOT=/usr/local/opt/go/libexec
export PATH=$PATH:$GOPATH/bin
export PATH=$PATH:$GOROOT/bin

developerfred

IPFS Guide

Mac Installation

1. Install Homebrew
2. ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
3. Install prerequisites
4. brew install git hg
5. brew install osxfuse (see Mac issues to troubleshoot common errors)
6. Install Go