shaunlebron

Safe Navigation in Clojure

safe-> is a safe navigation macro for Clojure. It extends some-> with additional guards:

1. doesn’t call nil values
2. doesn’t call missing methods (ClojureScript only)

---

shaunlebron

Poor man’s JS Pipe operator

Idea from Timur Xazamov https://x.com/nanot1m/status/1720494020651020562

Summary

While waiting for the [JS pipe operator] |>, maybe we can use ($=…, $=…, $) instead.

shaunlebron

#!/bin/bash

# Cheatsheet for remembering Bash rules for Parameter Substitution:
# https://tldp.org/LDP/abs/html/parameter-substitution.html#PSUB2


# Fallback for unset vars

# Bash    #——> like JavaScript
${a+b}    #——> a && b

shaunlebron

(ns user
  (:import (java.util.concurrent Executors TimeUnit)))

(defn set-timeout [^Callable f ^long ms]
  (doto (Executors/newScheduledThreadPool 1)
    (.schedule f ms TimeUnit/MILLISECONDS)))

(defn set-interval [^Callable f ^long ms]
  (doto (Executors/newScheduledThreadPool 1)
    (.scheduleAtFixedRate f 0 ms TimeUnit/MILLISECONDS)))

shaunlebron

import java.nio.charset.StandardCharsets;
import java.security.PrivateKey;
import java.security.Security;
import java.security.Signature;
import java.util.Base64;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
import org.bouncycastle.openssl.PEMKeyPair;
import org.bouncycastle.openssl.PEMParser;

shaunlebron

(ns example.polymarket.sign
  (:require
   [cheshire.core :as json]
   [clojure.string :as str])
  (:import
   (org.web3j.crypto Sign Credentials) ;; org.web3j/crypto "4.12.2"
   (org.web3j.utils Numeric)
   (java.util Base64)
   (javax.crypto Mac)
   (javax.crypto.spec SecretKeySpec)))

shaunlebron

Polymarket Data API Docs

jon_amen | Polymarket — 12/18/24, 11:52 AM

Today, we are releasing some documentation for Polymarket Data-API:
https://polymarket.notion.site/Polymarket-Data-API-Docs-15fd316c50d58062bf8ee1b4bcf3d461

Power users and developers can use this API to:

• List their positions
• Track top holders of a market

shaunlebron

This is a markdown-formatted mirror of the plaintext style guide here: http://mumble.net/~campbell/scheme/style.txt

---

Riastradh’s Lisp Style Rules

Copyright (C) 2007--2011 Taylor R. Campbell

CC BY-NC-SA 3.0

shaunlebron

CSS Typography

We can do typographic things in CSS that we couldn’t before.

Hanging Indent

text-indent: 2em hanging; /* Safari and Firefox only */

shaunlebron

Flexbox vs Inline alignment

flex-flow: row wrap shows how inline text alignment is a special case of flexbox:

TEXT-ALIGN:         left  | center | right | justify       | __           | __
→ JUSTIFY-CONTENT:  start | middle | end   | space-between | space-around | space-evenly

VERTICAL-ALIGN:     top   | middle | bottom | __
→ ALIGN-SELF: start | center | end | stretch