Python
[2 * x for x in (1,2,3,4,5,6,7,8)]
# ==> [2, 4, 6, 8, 10, 12, 14, 16]Clojure
(map #(* % 2) [1 2 3 4 5 6 7 8])
Edwin Watkeys edw
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| (defn bloom-filter-size-in-mb [n epsilon] | |
| (/ (* n | |
| (* 1.44 (/ (Math/log (/ 1 epsilon)) (Math/log 2)))) | |
| 1024 1024)) |
edw
/ gist:4608927
Last active
December 11, 2015 13:39
— forked from shripadk/gist:552554
Heroku SSL Cert
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| How to setup Heroku Hostname SSL with GoDaddy SSL Certificate | |
| The following tutorial explains how to use Heroku's new 'Hostname SSL' option on your Heroku project. Before we begin, let's list what we're using here: | |
| * Heroku Hostname SSL | |
| * GoDaddy Standard SSL Certificate | |
| I. Getting a GoDaddy SSL Certificate (Part I) | |
| 1. Purchase a GoDaddy Standard SSL Certificate |
edw
/ delete-recursively.clj
Last active
November 12, 2021 20:31
To delete a directory recursively in Clojure.
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| (defn delete-recursively [fname] | |
| (let [func (fn [func f] | |
| (when (.isDirectory f) | |
| (doseq [f2 (.listFiles f)] | |
| (func func f2))) | |
| (clojure.java.io/delete-file f))] | |
| (func func (clojure.java.io/file fname)))) |
edw
/ heroku-pg-dump-schema.sh
Last active
May 6, 2022 17:33
Dump a schema from a Heroku app's database.
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| #!/bin/sh | |
| # Usage: heroku-pg-dump-schema.sh HEROKU-APP-NAME DB-ENV-VAR-NAME SCHEMA-NAME | |
| app=$1 | |
| env_var=$2 | |
| schema=$3 | |
| db_url=`heroku config -s --app ${app} | grep ${env_var}` |
edw
/ .gitignore
Created
April 5, 2013 16:57
— forked from adamgit/.gitignore
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| ######################### | |
| # .gitignore file for Xcode4 / OS X Source projects | |
| # | |
| # Version 2.0 | |
| # For latest version, see: http://stackoverflow.com/questions/49478/git-ignore-file-for-xcode-projects | |
| # | |
| # 2013 updates: | |
| # - fixed the broken "save personal Schemes" | |
| # | |
| # NB: if you are storing "built" products, this WILL NOT WORK, |
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| core@ip-10-99-66-79 ~ $ sudo journalctl -u etcd | |
| -- Logs begin at Thu 2013-08-22 12:50:11 UTC, end at Thu 2013-08-22 14:55:20 UTC. -- | |
| Aug 22 12:50:21 ip-10-99-66-79 systemd[1]: Starting etcd... | |
| Aug 22 12:50:21 ip-10-99-66-79 systemd[1]: Started etcd. | |
| Aug 22 12:50:21 ip-10-99-66-79 etcd-bootstrap[490]: trying 10.116.74.174:7001,10.244.29.8:7001 | |
| Aug 22 12:50:21 ip-10-99-66-79 etcd-bootstrap[490]: + exec /usr/bin/etcd -d /var/lib/etcd -f -n 10.99.66.79 -c 10.99.66.79:4001 -s 10.99.6 | |
| Aug 22 12:50:21 ip-10-99-66-79 etcd-bootstrap[490]: [etcd] 12:50:21.634333 INFO Wrote node configuration to '/var/lib/etcd/info' | |
| Aug 22 12:50:22 ip-10-99-66-79 etcd-bootstrap[490]: [etcd] 12:50:22.469927 INFO etcd server [10.99.66.79:http://10.99.66.79:4001] | |
| Aug 22 12:50:22 ip-10-99-66-79 etcd-bootstrap[490]: [etcd] 12:50:22.470843 INFO raft server [10.99.66.79:http://10.99.66.79:7001] | |
| Aug 22 12:57:21 ip-10-99-66-79 systemd[1]: etcd.service: main process exited, code=exited, status=2/INVALIDARGUMENT |
edw
/ gist:6308497
Last active
September 10, 2016 15:41
docker: apt-get unable to locate redis-server
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| core@ip-10-99-66-79 ~ $ sudo docker pull ubuntu | |
| Pulling repository ubuntu | |
| Pulling image 8dbd9e392a964056420e5d58ca5cc376ef18e2de93b5cc90e868a1bbc8318c1c (precise) from ubuntu | |
| Pulling 8dbd9e392a964056420e5d58ca5cc376ef18e2de93b5cc90e868a1bbc8318c1c metadata | |
| Pulling 8dbd9e392a964056420e5d58ca5cc376ef18e2de93b5cc90e868a1bbc8318c1c fs layer | |
| Downloading 58.34 MB/58.34 MB (100%) | |
| Pulling image b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc (quantal) from ubuntu | |
| Pulling b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc metadata | |
| Pulling b750fe79269d2ec9a3c593ef05b4332b1d1a02a62b4accb2c21d589ff2f5f2dc fs layer | |
| Downloading 10.24 kB/10.24 kB (100%) |
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| java.lang.IllegalAccessError: pp does not exist | |
| at clojure.core$refer.doInvoke (core.clj:3849) | |
| clojure.lang.RestFn.applyTo (RestFn.java:139) | |
| clojure.core$apply.invoke (core.clj:619) | |
| clojure.core$load_lib.doInvoke (core.clj:5394) | |
| clojure.lang.RestFn.applyTo (RestFn.java:142) | |
| clojure.core$apply.invoke (core.clj:619) | |
| clojure.core$load_libs.doInvoke (core.clj:5413) | |
| clojure.lang.RestFn.applyTo (RestFn.java:137) | |
| clojure.core$apply.invoke (core.clj:619) |
ActionX, located in NYC, is looking for talented programmers interested in working full-time in our SoHo office. Successful candidates will have experience and interest in mostly-functional programming as well as at least some familiarity with Java and the Java Virtual Machine.
Furthermore, you should be familiar with the basics of Emacs, the Unix (e.g. OS X, Linux, FreeBSD) programming environment and the shell, and a computer science or EE/ECE background.