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Eric Avdey eiri

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eiri / gist.erl
Last active August 29, 2015 14:27
Extract rebared escript into zip file
{ok, F} = escript:extract("cfcheck", []).
file:write_file("c.zip", proplists:get_value(archive, F)).
@eiri
eiri / lists.js
Created August 19, 2015 02:09
Cycle a list, emit two elements per one item.
var items = _.chain(this.state.docs)
.slice(0, 10)
.map(function(doc, idx) {
return [
React.createElement(ListDivider, {
key: 'div' + idx,
inset: false
}),
React.createElement(ListItem, {
key: 'item' + idx,
@eiri
eiri / runme.py
Created July 26, 2015 19:29
Generic python script skeleton
#!/usr/bin/env python
# coding: utf-8
"""
Generic python script skeleton
"""
import sys, os, argparse, logging, ConfigParser
def parse_args():
@eiri
eiri / list and binary convention funs in R14B01 and R17.5.6.ipynb
Created July 7, 2015 13:18
list and binary convention funs in R14B01 and R17.5.6
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@eiri
eiri / Jiffy in R14B01 and R17.5.6.ipynb
Created July 2, 2015 16:58
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eiri / Effect of variable compressor on database size in CouchDB.ipynb
Last active August 29, 2015 14:23
Effect of variable compressor on database size in CouchDB
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eiri / proc_tree.escript
Created March 3, 2015 16:44
Walks erlang VM's process tree and prints PlantUML diagram of it on a standard output
#!/usr/bin/env escript
%% -*- erlang -*-
%%! -hidden -setcookie cookie
-mode(compile).
main(["-?"]) ->
usage();
main(Args) ->
case get_pid(Args) of
@eiri
eiri / gist:4afe8a98966f06a576b1
Created June 26, 2014 02:16
Erlang's binary:join/1
join([], _) -> []; %% or should it be <<"">> for a consistency sake?
join([H|[]], _) -> H;
join(List, Sep) when is_list(Sep) ->
join(List, list_to_binary(Sep));
join([H|T], Sep) ->
join(T, H, Sep).
join([], Acc, _) ->
Acc;
join([H|T], Acc, Sep) ->
@eiri
eiri / gist:9914ff58108e427b303e
Last active August 29, 2015 14:02
uuid v4 in erlang
uuid() ->
<<A:32, B:16, C:16, D:16, E:48>> = crypto:rand_bytes(16),
Fmt = "~8.16.0b-~4.16.0b-4~3.16.0b-~4.16.0b-~12.16.0b",
Str = io_lib:format(Fmt, [A, B, C band 16#0fff, D band 16#3fff bor 16#8000, E]),
list_to_binary(Str).
@eiri
eiri / gist:74f7c9a107d7eb858df7
Created June 10, 2014 00:26
erlang:now() to unix timestamp and back
now_to_timestamp() ->
now_to_timestamp(erlang:now()).
now_to_timestamp({Mega, Sec, _}) ->
Mega * 1000000 + Sec.
timestamp_to_now(TS) ->
{TS div 1000000, TS rem 1000000, 0}.