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func sample_usage() {
	digits := "0123456789abcdefghijklmnopqrstuvwxyz" // base 36
	var num int64 = 9876543210

	fmt.Printf("input number is %d\n", num)
	e := encode(num, digits)
	fmt.Printf("encoded as %v\n", e)
	d := decode(e, digits)
	fmt.Printf("decoded as %v\n", d)
}

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-module(server1).
-export([start/2, rpc/2]).

start(Name, Mod) ->
  register(Name, spawn(fun() -> loop(Name, Mod, Mod:init()) end)).

rpc(Name, Request) ->
  Name ! {self(), Request},
  receive
    {Name, Response} -> Response

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-module(name_server).
-export([init/0, add/2, find/1, handle/2]).
-import(server1, [rpc/2]).

%% client routines
add(Name, Place)  -> rpc(name_server, {add, Name, Place}).
find(Name)        -> rpc(name_server, {find, Name}).

%% callback routines
init() -> dict:new().

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-module(server2).
-export([start/2, rpc/2]).

start(Name, Mod) ->
  register(Name, spawn(fun() -> loop(Name,Mod,Mod:init()) end)).
  
rpc(Name, Request) ->
  Name ! {self(), Request},
  receive
    {Name, crash} -> exit(rpc);

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-module(server3).
-export([start/2, rpc/2, swap_code/2]).

start(Name, Mod) ->
  register(Name,
           spawn(fun() -> loop(Name,Mod,Mod:init()) end)).

swap_code(Name, Mod) -> rpc(Name, {swap_code, Mod}).

rpc(Name, Request) ->

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-module(name_server1).
-export([init/0, add/2, find/1, handle/2]).
-import(server3, [rpc/2]).

%% client routines
add(Name, Place)  -> rpc(name_server, {add, Name, Place}).
find(Name)        -> rpc(name_server, {find, Name}).

%% callback routines
init() -> dict:new().

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-module(server4).
-export([start/2, rpc/2, swap_code/2]).

start(Name, Mod) ->
  register(Name, spawn(fun() -> loop(Name,Mod,Mod:init()) end)).

swap_code(Name, Mod) -> rpc(Name, {swap_code, Mod}).

rpc(Name, Request) ->
  Name ! {self(), Request},

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defmodule PersianCalendar do
  @moduledoc """
  for converting persian calendar to/from gregorian calendar
  """

  @breaks [
    -61,
    9,
    38,
    199,

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The idea of using gists for blogging sounds interesting. They can be searched like this for a user's blog gists. #blog should be appended to the title of the gist for it to show up in the search result.