juri

extension Sequence {
    /// `[e1, e2, …, eN]` → `[(nil, e1), (e1, e2), …, (eN-1, eN), (eN, nil)]`
    func pairwise() -> UnfoldSequence<(Self.Element?, Self.Element?), ((Self.Element?, Self.Element?)?, Bool)> {
        var iter = self.makeIterator()

        var next1: Element? = nil
        var next2 = iter.next()

        return Swift.sequence(first: (next1, next2)) { prevpair -> (Element?, Element?)? in
            guard let nv2 = next2 else { return nil }

juri

Sandboxing gems

The problem: I need to install CocoaPods, but I don't want to litter my system with the various gems it requires.

I tried to use Homebrew Cask, but it broke with my setup where I have Homebrew installed in /opt/brew and no write access to /usr/local.

There's probably a solution that involves RVM or rbenv, but I couldn't don't know those tools and I couldn't find one that was neatly packaged and simply explained.

juri

Keybase proof

I hereby claim:

• I am juri on github.
• I am juri (https://keybase.io/juri) on keybase.
• I have a public key whose fingerprint is D57A 4A7B 4443 A556 1C14 E60D 27B6 AC5C 8198 13E3

To claim this, I am signing this object:

juri

#!/usr/bin/python

# Interpolate GPX waypoints to slow a simulated route down.

import itertools
import sys
import xml.etree.ElementTree as ET

def pairwise(iterable):
    "s -> (s0,s1), (s1,s2), (s2, s3), ..."

juri

;; balanced.el
;;
;; Time-stamp: <2010-02-04 19:30:03 juri>
;; (update this with M-x time-stamp)

;; Provides a modifier to major modes such that ``parenthesis''-type
;; characters usually stay balanced.  See the documentation-string for
;; ``balanced-on'' for details.  After putting this file somewhere in
;; your load-path, A not-bad thing to do with this package is: