Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? pictBLandã¨pictSQUAREã«å¯¾ãã䏿£ã¢ã¯ã»ã¹ãããããã¹ã¯ã¼ããã½ã«ããªãã®MD5ããã·ã¥ã§ä¿åããã¦ãããã¨ã話é¡ã«ãªã£ã¦ãã¾ãã 2023å¹´8æ16æ¥ã«å¤é¨ã®ãã©ã¼ã©ã ã«pictSQUAREããçªåããæ å ±ã¨ä¸»å¼µãããã¼ã¿è²©å£²ã®åå¼ãæã¡æããæç¨¿ãè¡ãããï¼ä¸ç¥ï¼ãã¹ã¯ã¼ãã¯MD5ã«ããããã·ã¥åã¯è¡ããã¦ãããã®ã®ã½ã«ãä»ä¸ã¯è¡ããã¦ããªãã£ããããåç´ãªãã¹ã¯ã¼ãã使ç¨ããã¦ãã29ä¸4512ä»¶ã¯å ã®æååã夿ãã¦ããã¨æç¨¿ãï¼ãã以å¤ã®26ä¸8172ä»¶ã¯ã¾ã MD5ããã·ã¥åãããã¾ã¾ã¨èª¬æãï¼ ä¸æ£ã¢ã¯ã»ã¹
ä¼ç¤¾ã«ãããã°ã®æ©ã人ã¨é ã人ãããã äºäººã観å¯ãã¦ããã¨ãè²ã ãªéããè¦ãã¦åå¼·ã«ãªãã ããã¤ãã¾ã¨ãã¦ã¿ãã ã»ãããã°ãæ©ã人ã¯ã³ã¼ãã«çæããåã«ç¶æ³ãæ´çãã æå¾ åä½ã¯ã©ã®ãããªãã®ããç¾ç¶ã®åä½ï¼ãã°ï¼ã¯ã©ããªãã®ããã©ããªæ¡ä»¶ã§ãã°ãçããããçããªãããæ´çãã ä»äººããã¢ãµã¤ã³ãããã¿ã¹ã¯ã®å ´åãææ©ããããã質åãã¦ç¶æ³ã確èªããã ãããã°ãé ã人ã¯ä½ãèããã«ã³ã¼ãã触ãå§ããã ãä½ããããã°ãã¦ããã®ï¼ãã¨èãã¨è¨èªååºæ¥ãªãã å ´å½ããçãäºæé¨å¼ã«è³ªåããã ã»ãããã°ãæ©ã人ã¯ä»®èª¬ãæã£ã¦ããã ãã£ããã¨å ¨ä½åãææ¡ããå½ãããã¤ãã¦ãã使¥ããã å ¨ã¦ã®ä½æ¥ãä»®èª¬ã®æ¤è¨¼ä½æ¥ãçµæãåºãæã«æ¬¡ã«ä½ããã¹ãããææ¡ãã¦ããã ãããã°ãé ã人ã¯èªåã§ãä½ããã£ã¦ãããåãã£ã¦ããªãã ãããããããªããã©ä¸å¿2å試ãã¦ã¿ããã¨ãè¨ãã ãããã¯ä»ä½ã
ã·ã¹ãã éçºã®ä¸çã«ããã¦ãæè¡çè² åµï¼Technical Debtï¼ãã¯ç¹°ãè¿ã話é¡ã«ãªãããã°ãã°çä¸ãã¦ãã¾ãã æè¡çè² åµã¨ããæ¦å¿µã®çã¿ã®è¦ªã¯ Ward Cunningham ï¼ã¦ã©ã¼ãã»ã«ãã³ã¬ã ï¼ã§ãã彼㯠1992 å¹´ã«ãªãã¸ã§ã¯ãæåããã°ã©ãã³ã°ã®å½éã«ã³ãã¡ã¬ã³ã¹ OOPSLA '92 ã® Experience Report ã§ã³ã¼ãã®ååãªãªã¼ã¹ãè² åµã«ä¾ãã¾ããï¼"Shipping first time code is like going into debt"ï¼ã Ward Cunningham ã¯ã½ããã¦ã§ã¢ã®ä¸çã«å¤ãã®è²¢ç®ãæããã¦ãã¾ãããWiki ã®çºæè ã§ãããXP 㨠TDD ã®ç¶ Kent Beck ã®å¸«å ã®ãããªåå¨ã§ããã建ç¯ã®ä¸çã®ããã¿ã³ã»ã©ã³ã²ã¼ã¸ãã Kent Beck ã¨å ±ã«ã½ããã¦ã§ã¢ã«è¼¸å ¥ãã人ã§ããããã¢ã¸ã£ã¤ã«ã½ããã¦ã§ã¢é
jqï¼https://stedolan.github.io/jq/ï¼ã®ç´¹ä»ã§ã¯ããJSONå¦çã®ã¯ã³ã©ã¤ãã¼ãä¸è¡ééãã¨ãã¦ãã¡ããã¡ã便å©ï¼ãã¨ã¢ãã¼ã«ããã®ãå®çªã§ãããã¡ããããã¯æ¬å½ã§ãããã¡ããã¡ã便å©ï¼ãã§ããããå®ã¯ jq ã¯ãã¯ã³ã©ã¤ãã¼è¨è¿°ã«ã¨ã©ã¾ããªããããªãæ¬æ ¼çãªããã°ã©ãã³ã°è¨èªã§ãã JSONå¦çã®ããã®DSLãDomain Specific Language | é åç¹åè¨èªããªã®ã§ãæ±ç¨è¨èªã§ã¯ããã¾ãããããããæ±ç¨è¨èªãåãã¦ããè¨èªæ©è½ã®ä¸é¨ï¼é¢æ°å®ç¾©ãã¢ã¸ã¥ã¼ã«ã·ã¹ãã ãªã©ï¼ã jq ãæã£ã¦ãã¾ããã¾ã jq ã¯ãç¬ç¹ã§æ¥½ããããã°ã©ãã³ã°ã»ãã©ãã¤ã -- âãã¤ãã©ã¤ã³æåâã«åºã¥ãã¦è¨è¨ããã¦ãã¾ãã ãã®è¨äºã§ã¯ãã¯ã³ã©ã¤ãã¼ãè¶ ãã jq ã®ä½¿ãæ¹ã¨ãããã°ã©ãã³ã°è¨èªã¨ãã¦ã® jq ã®ç¹å¾´ãç´¹ä»ãã¾ããé·ãè¨äºã«ãªã£ã¦ãã¾ã£ãã®ã§ãä¸
C# 5.0ã§éåæã¡ã½ãããå°å ¥ããã¦ããã æ£å¼ãªãªã¼ã¹ãåºæºã«ãã¦ã5年以ä¸ã æåã®çºè¡¨ããã ã¨7年以ä¸çµã£ã¦ãã¾ãã ã§ã5å¹´çµã£ã¦ããããªãã¦èªãã®ããasyncã®aã¨awaitã®aã¯éãããªã©ãªã©ããå®çªãã¿ãã¨ãã¦å®æçã«åºã¦ããããã§ããã ç¹ã«ãECMAScript 2017ãasync/awaitãå°å ¥ãããã Unity 2017ããã£ã¨C#ã®ãã¼ã¸ã§ã³ã6.0ã«ä¸ãããæãã«ãªã£ã¦ãããã 5å¹´ã®æçµ¶ãçµã¦å»å¹´ããasync/awaitã«è§¦ãã人ãå¢ãã¦ããããã§ãã 5å¹´ãé¢ããããä¸ä»£æçµ¶ãèµ·ããã¾ããã⦠ãããããå®çªãã¿ããæ¹ãã¦å¢ãããã¾ããã⦠ã¨ãããã¨ã§ã5å¹´ãããåã«åããããªãã¨ãã©ããã§æ¸ãã¦ãã¯ããªãã§ããã©ãæ¹ãã¦ã è±åèª ããããã ã¾ãèªã¿æ¹ã async: ã¨ã¤ã·ã³ã¯ await : ã¢ã¦ã§ã¤ã ã£ã¦ãã¤ãasync ã®æ¹ããã¢
ã©ããã¦äººééå£ã¯ãããªã«ãç¥è¦ã®å ±æãåæ»ã«ã§ããªãã®ãï¼ æ¹åã«ã¯ããã¥ã¡ã³ãã«ã¾ã¤ããåå人ã®å¿æ§ãã»å¶åº¦è¨è¨ã»æè¡ç解決ã®å ¨é¨ãå¿ è¦ã ã¨ãã話ããããï¼ ããã§ãã¼ãã«ãã¦ããã®ã¯ï¼èåOSSãªã©ä¸ã®ä¸ã«ãããã§ãç¥è¦ã転ãã£ã¦ãã対象ã§ã¯ãªãï¼ç¹ã«ä¼æ¥å ã®åæ°äººã®ãã¼ã ã§ã¯ãã¼ãºãã«éçºãã¦ãããªã©ãã¦éåç¥ã«é ¼ããªãç¶æ³ä¸ã§ã®ããã¥ã¡ã³ãã«ã¤ãã¦ã§ããï¼ é常ã«ä¹±æ´ãªè¨ãæ¹ããããªãï¼ãã³ã¼ãã¨ã大é¨åã¯èª°ã§ãæ¸ããããã«ãªããã®ãªããï¼ãããªã¨ããã«ãããã§ã¤ãºã ã¨ãæããªãã¦ããããï¼æã ã®ç¥çä½åãçµç¹æ§ãçã«è©¦ãããã®ã¯ããã¥ã¡ã³ãã¡ãããããã¨ããæ°æã¡ã§ã â ç»åã»å士å·ã»æ²¹ç° (@bd_gfngfn) June 3, 2022 ããã¥ã¡ã³ãã«æ¸ãå 容ã®å¿ é é ç®æãã·ã¹ãã ï¼ã½ããã¦ã§ã¢ãªã©ï¼ã«ã¤ãã¦ï¼ãã®ã·ã¹ãã ã®ãã¨ãå ¨ãç¥ããªãäººãæ³å®èªè ã¨ããããã¥ã¡ã³ã
Intro 2022/06/06 ~ 9 ãããã«ãé·ãã«æ¸¡ã£ã¦çå®ä½æ¥ãè¡ããã¦ãã HTTP é¢é£ã® RFC ã大éã«å ¬éãããã RFC 9110: HTTP Semantics RFC 9111: HTTP Caching RFC 9112: HTTP/1.1 RFC 9113: HTTP/2 RFC 9114: HTTP/3 RFC 9163: Expect-CT Extension for HTTP RFC 9204: QPACK: Field Compression for HTTP/3 RFC 9205: Building Protocols with HTTP RFC 9209: The Proxy-Status HTTP Response Header Field RFC 9211: The Cache-Status HTTP Response Header Field
ãªãã= NULLãã§ã¯ãªããIS NULLãã¨æ¸ããªãã¦ã¯ãªããªãã®ãï¼ ããã¯ãæ°ã«ãªã£ã¦ãã人ãå¤ãã¯ãã§ããã¾ã SQL ã«ä¸æ £ããªé ãããåã NULL ã§ããè¡ã鏿ãããã¨ãã¦ã SELECT * FROM table_A WHEREãcol_1 = NULL; ã¨ããã¯ã¨ãªãæ¸ãã¦ãã¾ããã¨ã©ã¼ã«ãªã£ããæãéãã®çµæãå¾ãããªãã£ããã¨ããçµé¨ã¯ãã»ã¼å ¨ã¦ã®äººãæã£ã¦ããã§ããããã¡ããã© Cè¨èªã JAVA ãç¿ãå§ãã®ããã«ãif (a = 5)ãã¨æ¸ãã¦ãã¾ãééãã¨ããä¼¼ã¦ãã¾ããæåã¯ãè¨èªä»æ§ã®æ±ãã«ã¶ã¤ã¶ã¤æå¥ããããªãããããã®ãã¡ãIS NULLãã¨ããæ¸ãæ¹ã«æ £ãã¦ãã¾ã£ã¦ãçåãæããªããªãã¾ãã ã§ãã©ãèãã¦ãå¥å¦ãªæ¸ãæ¹ã§ãããããããªç´ ç´ã§ãªãæ¸ãæ¹ãããªãã¦ã¯ãªããªãã¨ãããã¨ã«ã¯ããã¯ããããªãã®çç±ãããã®ã§ããä»ãããã®çç±ã説æãã¾
2021å¹´12æ10æ¥ãJavaãã¼ã¹ã®ãã°åºåã©ã¤ãã©ãªãApache Log4jãã®2.xç³»ãã¼ã¸ã§ã³ï¼ä»¥éã¯Log4j2ã¨è¨è¼ï¼ã§ç¢ºèªãããæ·±å»ãªèå¼±æ§ãä¿®æ£ãããã¼ã¸ã§ã³ãå ¬éããã¾ãããã»ãã¥ãªãã£é¢ä¿çµç¹ã§ã¯éå»è©±é¡ã«ãªã£ãHeartbleedãShellshockã¨åã¬ãã«ã®èå¼±æ§ã¨ãè©ä¾¡ãã¦ãã¾ããããã§ã¯é¢é£ããæ å ±ãã¾ã¨ãã¾ãã ï¼ï¼ä½ãèµ·ããã®ï¼ Javaãã¼ã¹ã®ãã°åºåã©ã¤ãã©ãªLog4j2ã§æ·±å»ãªèå¼±æ§ï¼CVE-2021-44228ï¼ãä¿®æ£ãããã¼ã¸ã§ã³ãå ¬éãããããã®å¾ãä¿®æ£ãä¸å®å ¨ã§ãã£ããã¨ãªã©ãçç±ã«2ä»¶ã®èå¼±æ§ãä¿®æ£ãããã åºãå©ç¨ããã¦ããã©ã¤ãã©ãªã§ããããå½±é¿ãåãã対象ãå¤ãåå¨ããã¨ã¿ãããæ»æã容æã§ãããã¨ãã2014å¹´ã®HeartbleedãShellshock以æ¥ã®å±éºæ§ãããã¨ã¿ãåãããããThe Apache Software
ã¯ããã« ãä¹ ãã¶ãã§ããçæ§ã®ãµã³ãããã¯ã帰ã£ã¦ã¾ããã¾ããã æç¨¿ãã§ãã¦ããªãæéãNuxtã«ãã³ãã³ã«ããã¦è£¸è¶³ã§éãåºããéããå ã®Reactã«ãå¼·çãªå·¦ã«ã¦ã³ã¿ã¼ããè¦èãããã¾ããã æ¬æ¥ã§ããã°ããã®ãããªå ´æã«æç¨¿ãããã¨ããã¯ã°ããããå 容ã§ãããæ¢ãã¦æ¸ãã¾ãããã ç§ã¯ããã³ãéçºãçä¸ãããæãè ã§ãã ãªã仿ºæããã®ã Twitterã§ãããªæç¨¿ãè¦ã¾ããã 確ãã«ãå®åã§å¾ãããçµé¨ã¯ãã¨ã¦ã大ããå¾é£ããã®ã§ãã å½ç¶ããè¿·æãããããã¦ãã¾ããã¨ã¯ãã ãã§ãããã¨ããã§ãããã ãã ãããã®ããè¿·æãã®å¤§ããã«ã¤ãã¦ãæã ã¯ç¥ã£ã¦ãããªãã¦ã¯ãªãã¾ããã è¦ãã¦ããå°é·ãè¸ãã§ãã¾ããããªã¢ã好ããããªãã§ãããã ç¹ã«ããã®æã®å°é·ã¯å¼·åã§ããããã 塵ã¨ãªã£ã¦å¹ãé£ãã ç§ã®å½ããæ°ããªæµ ç¬ã®æ°ã®ç³§ã¨ãªããã¨ãç¥ã£ã¦ãã¾ãã å ·ä½çã«ä½ãèµ·ãã£ãã®ã
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}