at_dbind.jl.ipynb

at_dbind.jl.ipynb

{
  "cells": [
    {
      "metadata": {
        "ExecuteTime": {
          "end_time": "2020-10-10T10:31:16.913000+09:00",
          "start_time": "2020-10-10T01:31:16.120Z"
        },
        "trusted": true
      },
      "cell_type": "code",
      "source": "versioninfo()",
      "execution_count": 1,
      "outputs": [
        {
          "name": "stdout",
          "output_type": "stream",
          "text": "Julia Version 1.5.2\nCommit 539f3ce943 (2020-09-23 23:17 UTC)\nPlatform Info:\n  OS: Linux (x86_64-pc-linux-gnu)\n  CPU: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz\n  WORD_SIZE: 64\n  LIBM: libopenlibm\n  LLVM: libLLVM-9.0.1 (ORCJIT, skylake)\n"
        }
      ]
    },
    {
      "metadata": {
        "ExecuteTime": {
          "end_time": "2020-10-10T10:31:17.374000+09:00",
          "start_time": "2020-10-10T01:31:16.122Z"
        },
        "trusted": true
      },
      "cell_type": "code",
      "source": "macro dbind(ex)\n    @assert Meta.isexpr(ex, :(=))\n    Expr(:(=), esc(vect2tuple(ex.args[1])), esc(ex.args[2]))\nend",
      "execution_count": 2,
      "outputs": [
        {
          "data": {
            "text/plain": "@dbind (macro with 1 method)"
          },
          "execution_count": 2,
          "metadata": {},
          "output_type": "execute_result"
        }
      ]
    },
    {
      "metadata": {
        "ExecuteTime": {
          "end_time": "2020-10-10T10:31:17.441000+09:00",
          "start_time": "2020-10-10T01:31:16.123Z"
        },
        "trusted": true
      },
      "cell_type": "code",
      "source": "vect2tuple(ex) = ex\nfunction vect2tuple(ex::Expr)\n    if Meta.isexpr(ex, :vect)\n        Expr(:tuple, vect2tuple.(ex.args)...)\n    else\n        Expr(ex.head, vect2tuple.(ex.args)...)\n    end\nend",
      "execution_count": 3,
      "outputs": [
        {
          "data": {
            "text/plain": "vect2tuple (generic function with 2 methods)"
          },
          "execution_count": 3,
          "metadata": {},
          "output_type": "execute_result"
        }
      ]
    },
    {
      "metadata": {
        "ExecuteTime": {
          "end_time": "2020-10-10T10:31:17.793000+09:00",
          "start_time": "2020-10-10T01:31:16.125Z"
        },
        "trusted": true
      },
      "cell_type": "code",
      "source": "@macroexpand @dbind [a, [b, c, d], e] = [1, [2, 3, 4], 5]",
      "execution_count": 4,
      "outputs": [
        {
          "data": {
            "text/plain": ":((a, (b, c, d), e) = [1, [2, 3, 4], 5])"
          },
          "execution_count": 4,
          "metadata": {},
          "output_type": "execute_result"
        }
      ]
    },
    {
      "metadata": {
        "ExecuteTime": {
          "end_time": "2020-10-10T10:31:18.824000+09:00",
          "start_time": "2020-10-10T01:31:16.126Z"
        },
        "trusted": true
      },
      "cell_type": "code",
      "source": "@dbind [a, [b, c, d], e] = [1, [2, 3, 4], 5]",
      "execution_count": 5,
      "outputs": [
        {
          "data": {
            "text/plain": "3-element Array{Any,1}:\n 1\n  [2, 3, 4]\n 5"
          },
          "execution_count": 5,
          "metadata": {},
          "output_type": "execute_result"
        }
      ]
    },
    {
      "metadata": {
        "ExecuteTime": {
          "end_time": "2020-10-10T10:31:19.046000+09:00",
          "start_time": "2020-10-10T01:31:16.134Z"
        },
        "trusted": true
      },
      "cell_type": "code",
      "source": "(a, b, c, d, e)",
      "execution_count": 6,
      "outputs": [
        {
          "data": {
            "text/plain": "(1, 2, 3, 4, 5)"
          },
          "execution_count": 6,
          "metadata": {},
          "output_type": "execute_result"
        }
      ]
    },
    {
      "metadata": {
        "ExecuteTime": {
          "end_time": "2020-10-10T10:34:12.915000+09:00",
          "start_time": "2020-10-10T01:34:13.552Z"
        },
        "trusted": true
      },
      "cell_type": "code",
      "source": "@dbind [a, (b, [c, d]), e] = [11, [12, (13, 14)], 15]\n(a, b, c, d, e)",
      "execution_count": 7,
      "outputs": [
        {
          "data": {
            "text/plain": "(11, 12, 13, 14, 15)"
          },
          "execution_count": 7,
          "metadata": {},
          "output_type": "execute_result"
        }
      ]
    }
  ],
  "metadata": {
    "kernelspec": {
      "name": "julia-1.5",
      "display_name": "Julia 1.5.2",
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    "language_info": {
      "file_extension": ".jl",
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      "mimetype": "application/julia",
      "version": "1.5.2"
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    "gist": {
      "id": "",
      "data": {
        "description": "at_dbind.jl.ipynb",
        "public": true
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  "nbformat": 4,
  "nbformat_minor": 2
}