{"id":1802,"date":"2019-06-06T15:32:40","date_gmt":"2019-06-06T06:32:40","guid":{"rendered":"http:\/\/141.164.34.82\/?p=1802"},"modified":"2019-06-06T15:36:53","modified_gmt":"2019-06-06T06:36:53","slug":"%ed%95%a0%eb%8b%b9","status":"publish","type":"post","link":"http:\/\/ds.sumeun.org\/?p=1802","title":{"rendered":"\ud560\ub2f9"},"content":{"rendered":"

\uac19\uc9c0\ub9cc \uac19\uc9c0 \uc54a\uc740<\/h2>\n

R\uc5d0\ub294 \ubcc0\uc218\uc5d0 \uc5b4\ub5a4 \uac12\uc744 \ud560\ub2f9(assignment)\ud558\uae30 \uc704\ud574 =<\/code>, <-<\/code>, <<-<\/code>\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4. \ud2b9\ud788 =<\/code>\uc640 <-<\/code>\ub294 \ud070 \ucc28\uc774\uac00 \uc5c6\uc5b4 \ubcf4\uc778\ub2e4. \uba87 \uac00\uc9c0\ub9cc \ube7c\uba74.<\/p>\n

    \n
  1. \uc6b0\uc120\uc21c\uc704 : <-<\/code>\uac00 =<\/code>\ubcf4\ub2e4 \ub192\ub2e4.<\/li>\n
  2. \ud568\uc218\uc758 \ub9e4\uac1c\ubcc0\uc218 \uc124\uc815 : =<\/code>\ub9cc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/li>\n<\/ol>\n

    \uc5ec\uae30\uc11c\ub294 \ud2b9\ud788 2\ubc88\uc9f8\ub97c \uc598\uae30\ud574\ubcf4\uc790.<\/p>\n

    \ud568\uc218\uc758 \ub9e4\uac1c\ubcc0\uc218 \uc124\uc815<\/h2>\n

    \ub2e4\uc74c\uc758 \ud568\uc218 f()<\/code>\uc5d0\ub294 \ub450 \uac1c\uc758 \ub9e4\uac1c \ubcc0\uc218\uac00 \uc788\ub2e4.<\/p>\n

    f = function(x,y) {\r\n  x-y\r\n}\r\n<\/code><\/pre>\n
    \uc774\ub54c =<\/code>\uacfc <-<\/code>\uac00 \uac19\ub2e4\uace0 \uc0dd\uac01\ud574\uc11c f(x <- 3, y <- 1)<\/code>\uacfc \uac19\uc740 \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud558\uba74 \uc5c9\ub6b1\ud55c \uacb0\uacfc\uac00 \ub098\uc628\ub2e4.<\/p>\n
    \ud568\uc218\uc758 \ub9e4\uac1c \ubcc0\uc218\uc5d0 \ud560\ub2f9\ud560 \ub54c\uc5d0\ub294 =<\/code>\ub9cc\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4.<\/strong><\/p>\n
    f(x <- 3, y <- 1)\r\n<\/code><\/pre>\n
    ## [1] 2\r\n<\/pre>\n
    \uc5b4\ucc0c\ub410\ub4e0 \uc704\uc758 \ud568\uc218\ub294 \uc6d0\ud558\ub294 \ub300\ub85c x-y<\/code>\ub97c \uacb0\uacfc\uac12\uc73c\ub85c \ub0b4\ub193\uace0 \uc788\uc9c0 \uc54a\uc740\uac00? \ud558\uc9c0\ub9cc \uc2e4\uc0c1\uc740 \ub2e4\ub974\ub2e4. \ub2e4\uc74c\uc744 \uc2e4\ud589\uc2dc\ucf1c\ubcf4\uc790.<\/p>\n
    f(y <- 1, x <- 3)\r\n<\/code><\/pre>\n
    ## [1] -2\r\n<\/pre>\n
    f(y= , x= )<\/code>\uaf34\uc758 \uacbd\uc6b0\uc5d0\ub294 \ub9e4\uac1c\ubcc0\uc218 y<\/code>\uc640 x<\/code>\uc5d0 \uc6d0\ud558\ub294 \uac12\uc744 \ud560\ub2f9\ud55c\ub2e4. \ud558\uc9c0\ub9cc f(y <- , x <- )<\/code>\uc758 \uacbd\uc6b0\uc5d0\ub294 \ub9e4\uac1c\ubcc0\uc218\uc774\ub984\uc73c\ub85c \ud560\ub2f9\ub418\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \ud568\uc218 \uc815\uc758\uc5d0\uc11c \ub098\ud0c0\ub09c \ub9e4\uac1c\ubcc0\uc218 \uc21c\uc11c\ub300\ub85c \uac12\uc774 \ud560\ub2f9\ub41c\ub2e4. \ub2e4\uc2dc \ub9d0\ud574 \ub2e4\uc74c\uc758 \ub458\uc740 \uacb0\uacfc\uac00 \uac19\ub2e4.<\/p>\n
    f(y <- 1, x <- 3)\r\n<\/code><\/pre>\n
    ## [1] -2\r\n<\/pre>\n
    f(x=(y <- 1 ), y=(x <- 3))\r\n<\/code><\/pre>\n
    ## [1] -2\r\n<\/pre>\n
    f(y <- 1, x <- 1)<\/code>\uc5d0\uc11c y <- 1<\/code>\uc740 \ubcc0\uc218 y<\/code>\uc5d0 1<\/code>\uc744 \ub300\uc785\ud55c\ub2e4. \uadf8\ub9ac\uace0 y <- 1<\/code>\uc758 \uacb0\uacfc\ub294 1<\/code>\uc774\ub2e4. ( print(y <- 1)<\/code>\uc744 \ud574\ubcf4\uc790.) \uadf8\ub9ac\uace0 \uc774 1<\/code>\uc774 \ud568\uc218\uc758 \uc778\uc790\ub85c \uc785\ub825\ub41c\ub2e4. \ud558\uc9c0\ub9cc \uc5b4\ub5a4 \ub9e4\uac1c\ubcc0\uc218\ub85c \ub4e4\uc5b4\uac08\uc9c0\uc5d0 \ub300\ud574 \uc815\ud574\uc8fc\uc9c0 \uc54a\uc558\uae30 \ub54c\ubb38\uc5d0 \ud568\uc218\uc758 \uc815\uc758(f=function(x,y)<\/code>)\uc5d0\uc11c \ub098\uc624\ub294 \uccab \ubc88\uc9f8 \ub9e4\uac1c\ubcc0\uc218 x<\/code>\uc5d0 1<\/code>\uc774 \ub300\uc785\ub41c\ub2e4. \ub9c8\ucc2c\uac00\uc9c0 \uc774\uc720\ub85c x <- 1<\/code>\uc758 \uacb0\uacfc\uac12 3<\/code>\uc740 \ub9e4\uac1c \ubcc0\uc218 y<\/code>\uc5d0 \ub300\uc785\ub41c\ub2e4.<\/p>\n
    \ucc38\uace0\ub85c, <-<\/code>\ub97c \uc4f8 \ub54c\uc5d0\ub294 \ubc18\ub4dc\uc2dc <<\/code>\uacfc -<\/code>\ub97c \ubd99\uc5ec\uc57c \ud55c\ub2e4. \uc608\ub97c \ub4e4\uc5b4 x < -1<\/code>\uacfc x <- 1<\/code>\uc740 \uc804\ud600 \ub2e4\ub978 \uacb0\uacfc\ub97c \ub098\ud0c0\ub0b8\ub2e4.<\/p>\n
    <<-<\/code><\/h2>\n
    \ub9c8\uc9c0\ub9c9\uc73c\ub85c <<-<\/code>\ub294 \ud568\uc218 \uc548\uc5d0\uc11c \uc804\uc5ed \ubcc0\uc218\uc5d0 \uac12\uc744 \ub300\uc785\ud560 \uc218 \uc788\ub2e4. \ub2e4\uc74c\uc744 \ube44\uad50\ud574\ubcf4\uc790.<\/p>\n
    x=5\r\nf = function(a,b) {\r\n  x <- a; y <- b \r\n  x-y\r\n  }\r\nf(3,2)\r\n<\/code><\/pre>\n
    ## [1] 1\r\n<\/pre>\n
    x\r\n<\/code><\/pre>\n
    ## [1] 5\r\n<\/pre>\n
    x=5\r\nf = function(a,b) {\r\n  x <<- a; y <<- b \r\n  x-y\r\n  }\r\nf(3,2)\r\n<\/code><\/pre>\n
    ## [1] 1\r\n<\/pre>\n
    x\r\n<\/code><\/pre>\n
    ## [1] 3\r\n<\/pre>\n
    \n
    \uc5ec\uae30\uc11c\ub294 R\uc5d0\uc11c \ud560\ub2f9 \uc5f0\uc0b0\uc790\ub85c \uc4f0\uc774\ub294 =<\/code>, <-<\/code>, <<-<\/code>\uc758 \uc758\ubbf8\ub97c \uc54c\uc544\ubcf4\uace0 \ucc28\uc774\uc810\uc744 \uc0b4\ud3b4\ubcf4\uc558\uc2b5\ub2c8\ub2e4. \ud2b9\ud788 \ud568\uc218\uc5d0\uc11c \ub9e4\uac1c\ubcc0\uc218\ub97c \uc9c0\uc815\ud560 \ub54c\uc5d0\ub294 \uaf2d =<\/code>\ub97c \uc368\uc57c \ud568\uc744 \uc8fc\uc758\ud558\uc138\uc694!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"
    \uac19\uc9c0\ub9cc \uac19\uc9c0 \uc54a\uc740 R\uc5d0\ub294 \ubcc0\uc218\uc5d0 \uc5b4\ub5a4 \uac12\uc744 \ud560\ub2f9(assignment)\ud558\uae30 \uc704\ud574 =, <-, <<-\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4. \ud2b9\ud788 =\uc640 <-\ub294 \ud070 \ucc28\uc774\uac00 \uc5c6\uc5b4 \ubcf4\uc778\ub2e4. \uba87 \uac00\uc9c0\ub9cc \ube7c\uba74. \uc6b0\uc120\uc21c\uc704 : <-\uac00 =\ubcf4\ub2e4 \ub192\ub2e4. \ud568\uc218\uc758 \ub9e4\uac1c\ubcc0\uc218 \uc124\uc815 : =\ub9cc \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4. \uc5ec\uae30\uc11c\ub294 \ud2b9\ud788 2\ubc88\uc9f8\ub97c \uc598\uae30\ud574\ubcf4\uc790. \ud568\uc218\uc758 \ub9e4\uac1c\ubcc0\uc218 \uc124\uc815 \ub2e4\uc74c\uc758 \ud568\uc218 f()\uc5d0\ub294 \ub450 \uac1c\uc758 \ub9e4\uac1c \ubcc0\uc218\uac00 \uc788\ub2e4. f = […]<\/p>\n","protected":false},"author":1,"featured_media":1804,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[28,179],"tags":[316,317,278,315,318],"jetpack_featured_media_url":"http:\/\/ds.sumeun.org\/wp-content\/uploads\/2019\/06\/assignment.png","_links":{"self":[{"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=\/wp\/v2\/posts\/1802"}],"collection":[{"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1802"}],"version-history":[{"count":3,"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=\/wp\/v2\/posts\/1802\/revisions"}],"predecessor-version":[{"id":1977,"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=\/wp\/v2\/posts\/1802\/revisions\/1977"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=\/wp\/v2\/media\/1804"}],"wp:attachment":[{"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1802"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ds.sumeun.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}