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{"id":38830,"date":"2019-04-02T09:56:47","date_gmt":"2019-04-02T02:56:47","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=38830"},"modified":"2019-11-21T11:58:23","modified_gmt":"2019-11-21T04:58:23","slug":"bug-la-gi-5-loai-bug-kieu-gi-cac-lap-trinh-vien-cung-gap-it-nhat-mot-lan-trong-doi","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/bug-la-gi-5-loai-bug-kieu-gi-cac-lap-trinh-vien-cung-gap-it-nhat-mot-lan-trong-doi\/","title":{"rendered":"Bug l\u00e0 g\u00ec? 5 Lo\u1ea1i bug ki\u1ec3u g\u00ec c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean c\u0169ng g\u1eb7p \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n trong \u0111\u1eddi."},"content":{"rendered":"\n

Bug l\u00e0 g\u00ec?<\/strong><\/p>\n\n\n\n

L\u00e0 m\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean th\u00ec vi\u1ec7c l\u00e0m quen v\u1edbi bug l\u00e0 m\u1ed9t \u0111i\u1ec1u t\u1ea5t y\u1ebfu. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n h\u01a1n, m\u1ed9t bug c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t l\u1ed7i trong m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh. Trong qu\u00e1 tr\u00ecnh vi\u1ebft code, c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi vi\u1ec7c m\u1eafc ph\u1ea3i sai l\u1ea7m. C\u00e1c sai l\u1ea7m n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng bug trong code. Vi\u1ebft code l\u00e0 ph\u1ea7n d\u1ec5 d\u00e0ng. B\u01b0\u1edbc kh\u00f3 kh\u0103n l\u00e0 debug (t\u1ee9c l\u00e0 t\u00ecm error ho\u1eb7c bug trong ch\u01b0\u01a1ng tr\u00ecnh). Qu\u00e1 tr\u00ecnh n\u00e0y khi\u1ebfn c\u00e1c dev \u0111i\u00ean \u0111\u1ea7u v\u00ec l\u1ea1i t\u1ea1o th\u00eam n bug kh\u00e1c thay v\u00ec s\u1eeda bug hi\u1ec7n t\u1ea1i. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 5 lo\u1ea1i bug \u0111i\u1ec3n h\u00ecnh m\u00e0 b\u1ea5t k\u1ef3 dev n\u00e0o c\u0169ng g\u1eb7p ph\u1ea3i \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n trong \u0111\u1eddi. <\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Bug t\u00ed hon\ufeff<\/strong><\/p>\n\n\n\n

Bug n\u00e0y l\u00e0 m\u1ed9t lo\u1ea1i \u2018b\u1ecd\u2019 c\u00f3 \u2018k\u00edch th\u01b0\u1edbc\u2019 nh\u1ecf h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u1ed3ng b\u1ea1n, nh\u01b0ng \u0111\u1ec3 \u0111\u1ed1i ph\u00f3 v\u1edbi lo\u1ea1i bug n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 d\u1ec5 d\u00e0ng. B\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c lo\u1ea1i compile error v\u00e0 sau \u0111\u00f3 c\u00f3 th\u1ec3 ti\u00eau t\u1ed1n h\u00e0ng gi\u1edd \u0111\u1ed3ng h\u1ed3 ho\u1eb7c th\u00e2m ch\u00ed c\u1ea3 ng\u00e0y tr\u1eddi ch\u1ec9 \u0111\u1ec3 t\u00ecm ra \u0111o\u1ea1n code c\u00f3 v\u1ea5n \u0111\u1ec1. C\u00e1c l\u1ed7i nh\u01b0 v\u1eady bao g\u1ed3m vi\u1ec7c qu\u00ean d\u1ea5u ch\u1ea5m ph\u1ea9y \u2018;\u2019 ho\u1eb7c c\u00e1c lo\u1ea1i d\u1ea5u ngo\u1eb7c \u2018()\u2019. Trong m\u1ed9t v\u00e0i ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh, v\u00ed d\u1ee5 nh\u01b0 Python, b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 khi th\u1ee5t l\u1ec1 sai. C\u00e1c l\u1ed7i nh\u1ecf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n khi s\u1eed d\u1ee5ng c\u00e1c IDE ph\u00f9 h\u1ee3p. Bug t\u00ed hon l\u00e0 lo\u1ea1i l\u1ed7i g\u00e2y kh\u00f3 ch\u1ecbu nh\u1ea5t trong t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i v\u00ec b\u1ea1n bi\u1ebft ch\u00fang c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng s\u1eeda ch\u1eefa nh\u01b0ng ph\u1ea3i d\u00e0nh c\u1ea3 tu\u1ed5i thanh xu\u00e2n ch\u1ec9 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a ch\u00fang. <\/p>\n\n\n\n

Bug kh\u00f4ng t\u1ed3n t\u1ea1i<\/strong><\/p>\n\n\n\n

Lo\u1ea1i bug n\u00e0y th\u1eadm ch\u00ed c\u00f2n kh\u00f4ng t\u1ed3n t\u1ea1i. V\u1ea5n \u0111\u1ec1 \u1edf \u0111\u00e2y l\u00e0 compile error c\u1ee9 th\u1ebf m\u00e0 nh\u1ea3y ra li\u00ean t\u1ee5c d\u00f9 b\u1ea1n \u0111\u00e3 review code l\u1ea1i nh\u01b0 th\u1ebf n\u00e0o \u0111i ch\u0103ng n\u1eefa. Vi\u1ec7c n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra khi tr\u00ecnh bi\u00ean d\u1ecbch b\u1ecb l\u1ed7i ho\u1eb7c d\u00f9ng sai. B\u1ea1n c\u00f3 th\u1ec3 b\u1ecb b\u00e1o l\u1ed7i khi ho\u00e0n to\u00e0n kh\u00f4ng c\u00f3 l\u1ed7i n\u00e0o. C\u00e1c tr\u00ecnh bi\u00ean d\u1ecbch c\u0169 c\u00f3 th\u1ec3 kh\u00f4ng h\u1ed7 tr\u1ee3 c\u00e1c t\u00ednh n\u0103ng m\u1edbi hi\u1ec7n h\u00e0nh. B\u1ea1n c\u0169ng n\u00ean c\u1eadp nh\u1eadt tr\u00ecnh bi\u00ean d\u1ecbch c\u00e0ng th\u01b0\u1eddng xuy\u00ean c\u00e0ng t\u1ed1t. L\u1eddi khuy\u00ean l\u00e0: C\u1ea7n ph\u1ea3i ch\u1ecdn tr\u00ecnh bi\u00ean d\u1ecbch c\u1ea9n th\u1eadn h\u01a1n c\u1ea3 khi ch\u1ecdn v\u1ee3. Th\u1ec9nh tho\u1ea3ng, code c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 ch\u1ea1y tr\u01a1n chu nh\u01b0ng b\u1ea1n l\u1ea1i \u0111\u01b0\u1ee3c b\u00e1o l\u1ed7i sau khi c\u1eadp nh\u1eadt tr\u00ecnh bi\u00ean d\u1ecbch. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 tr\u00ecnh vi\u00ean d\u1ecbch ch\u1ec9 \u0111\u01a1n gi\u1ea3n hi\u1ec3n th\u1ecb cho b\u1ea1n c\u00e1c l\u1ed7i \u0111ang t\u1ed3n t\u1ea1i m\u00e0 tr\u01b0\u1edbc \u0111\u00f3 kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c. <\/h5>\n\n\n\n

Bug kh\u1ee7ng<\/strong><\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

B\u1ea1n s\u1ebd g\u1eb7p c\u00e1c bug n\u00e0y khi code c\u00f3 l\u1ed7i c\u00fa ph\u00e1p ho\u1eb7c l\u00e0 sai ch\u00ednh t\u1ea3. C\u00e1c bug nh\u01b0 v\u1eady b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1c l\u1ed7i thu\u1eadt to\u00e1n, logic ho\u1eb7c l\u1ed7i t\u00e0i nguy\u00ean. L\u1ed7i t\u00e0i nguy\u00ean c\u00f3 th\u1ec3 bao g\u1ed3m vi\u1ec7c s\u1eed d\u1ee5ng sai lo\u1ea1i d\u1eef li\u1ec7u v\u00e0 vi ph\u1ea1m truy c\u1eadp. M\u1ed7i ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh s\u1ebd \u0111\u1ec1u c\u00f3 c\u00fa ph\u00e1p ri\u00eang v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c theo d\u00f5i t\u1ec9 m\u1ec9. Ch\u1ec9 c\u1ea7n m\u1ed9t sai l\u1ec7ch nh\u1eb9 c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng m\u1ecdi th\u1ee9. May m\u1eafn thay, m\u1ed9t tr\u00ecnh bi\u00ean d\u1ecbch t\u1ed1t c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ra c\u00e1c l\u1ed7i nh\u01b0 v\u1eady v\u00e0 cho ph\u00e9p b\u1ea1n s\u1eeda ch\u1eefa ch\u00fang. <\/h5>\n\n\n\n

Bug \u1ea9n th\u00e2n<\/strong><\/p>\n\n\n\n

C\u00e1c l\u1ed7i nh\u01b0 v\u1eady kh\u00f4ng bao gi\u1edd hi\u1ec3n th\u1ecb trong tr\u00ecnh bi\u00ean d\u1ecbch. Ch\u1ec9 sau khi ph\u1ea7n m\u1ec1m \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t v\u00e0 s\u1eed d\u1ee5ng, b\u1ea1n s\u1ebd b\u1eaft \u0111\u1ea7u th\u1ea5y c\u00e1c bi\u1ec3u hi\u1ec7n c\u1ee7a ch\u00fang. S\u1ebd x\u1ea3y ra c\u00e1c s\u1ef1 c\u1ed1 v\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng mong mu\u1ed1n. Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, c\u00e1c bug \u1ea9n n\u1eb1m \u1edf d\u1ea1ng l\u1ed7 h\u1ed5ng khi\u1ebfn cho ph\u1ea7n m\u1ec1m kh\u00f4ng an to\u00e0n v\u00e0 d\u1ec5 d\u00e0ng b\u1ecb hack.<\/h5>\n\n\n\n

Bug b\u1ea5t ng\u1edd<\/strong><\/p>\n\n\n\n

L\u00e0 khi bug b\u1ea5t ng\u1edd xu\u1ea5t hi\u1ec7n t\u1eeb h\u01b0 kh\u00f4ng. Code c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 ch\u1ea1y ho\u00e0n h\u1ea3o ngay h\u00f4m nay. Nh\u01b0ng b\u1eb1ng c\u00e1ch n\u00e0o \u0111\u00f3, n\u00f3 s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u00e0o ng\u00e0y h\u00f4m sau. N\u00f3 s\u1ebd khi\u1ebfn cho b\u1ea1n \u0111\u1eb7t ra c\u00e2u h\u1ecfi li\u1ec7u c\u00f3 ai \u0111\u00f3 \u0111\u00e3 ngh\u1ecbch code c\u1ee7a m\u00ecnh trong khi m\u00ecnh \u0111ang ng\u1ee7?<\/h5>\n\n\n\n
Code c\u00e0ng nhi\u1ec1u, b\u1ea1n l\u1ea1i c\u00e0ng d\u1ec5 d\u00e0ng debug. M\u1ed9t s\u1ed1 l\u1ed7i b\u1ea1n ch\u1ec9 c\u1ea7n m\u1ea5t kho\u1ea3ng 5 gi\u00e2y. Nh\u01b0ng c\u0169ng c\u00f3 nh\u1eefng l\u1ed7i khi\u1ebfn b\u1ea1n ph\u1ea3i t\u1ed1i th\u1eddi gian l\u00e0 5 ng\u00e0y. Ho\u1eb7c th\u1eadm ch\u00ed c\u00f3 nh\u1eefng bug m\u00e0 c\u00f3 th\u1ec3 c\u1ea3 \u0111\u1eddi b\u1ea1n c\u0169ng kh\u00f4ng bao gi\u1edd s\u1eeda \u0111\u01b0\u1ee3c, bu\u1ed3n thay\u2026H\u00e3y nh\u1edb r\u1eb1ng b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o th\u00eam 5 l\u1ed7i trong khi c\u1ed1 s\u1eeda 2 bug. N\u1ebfu code c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng, c\u00f3 th\u1ec3 b\u1ea1n \u0111\u1eebng \u0111\u1ee5ng g\u00ec t\u1edbi n\u00f3 n\u1eefa th\u00ec h\u01a1n.<\/h5>\n","protected":false},"excerpt":{"rendered":"

Bug l\u00e0 g\u00ec? L\u00e0 m\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean th\u00ec vi\u1ec7c l\u00e0m quen v\u1edbi bug l\u00e0 m\u1ed9t \u0111i\u1ec1u t\u1ea5t y\u1ebfu. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n h\u01a1n, m\u1ed9t bug c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t l\u1ed7i trong m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh. Trong qu\u00e1 tr\u00ecnh vi\u1ebft code, c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi vi\u1ec7c m\u1eafc ph\u1ea3i […]<\/p>\n","protected":false},"author":12,"featured_media":38831,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1651,18],"tags":[],"yoast_head":"\nBug l\u00e0 g\u00ec? 5 Lo\u1ea1i bug ki\u1ec3u g\u00ec c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean c\u0169ng g\u1eb7p \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n trong \u0111\u1eddi.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/bug-la-gi-5-loai-bug-kieu-gi-cac-lap-trinh-vien-cung-gap-it-nhat-mot-lan-trong-doi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bug l\u00e0 g\u00ec? 5 Lo\u1ea1i bug ki\u1ec3u g\u00ec c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean c\u0169ng g\u1eb7p \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n trong \u0111\u1eddi.\" \/>\n<meta property=\"og:description\" content=\"Bug l\u00e0 g\u00ec? L\u00e0 m\u1ed9t l\u1eadp tr\u00ecnh vi\u00ean th\u00ec vi\u1ec7c l\u00e0m quen v\u1edbi bug l\u00e0 m\u1ed9t \u0111i\u1ec1u t\u1ea5t y\u1ebfu. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n h\u01a1n, m\u1ed9t bug c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 m\u1ed9t l\u1ed7i trong m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh. 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