Kotlinã¯Nullå®å
¨ãªããã°ã©ã è¨èªã ã¨ããã¾ãããå½ç¶ãªããNullãåããã夿°objã«å¯¾ãã¦ãobj!!ãªãã¦ãã£ã¡ãã£ãããå ´åã«ãã£ã¦ã¯è½ã¡ã¾ãã ãã Kotlinã«ã¯Javaã«ã¯ãªãã¹ã³ã¼ã颿°ãæ¡å¼µé¢æ°ãã¨ã«ãã¹æ¼ç®åãªã©ãããã¾ããããããæ´»ç¨ããã°ãã®å¿ã
ããNullãè¯éºã«ããããã¨ãã§ãã¾ããä»åãæ¯è¼çãã使ãNullåé¿ã®å®è£
ãã¾ã¨ãã¦ããã¾ãã å
¨ã¦ã®ãªãã¸ã§ã¯ããNullã§ãªãå ´åã®ã¿å¦çãå®è¡ããï¼ ãããªãã¸ã§ã¯ããNullã§ãªãå ´åã®ã¿ãã¨ããå¦çãå®è¡ãããã±ã¼ã¹ã¯ããããã¨æãã¾ããæ®éã¯æ¬¡ã®ããã«æ¸ãã¨æãã¾ãã ãã®æ¸ãæ¹èªä½åé¡ãããããã§ã¯ãªãã®ã§ãããæ¬¡ã®ãããªã±ã¼ã¹ã®å ´åã«ã¡ãã£ã¨ããä¸é½åãããã¾ãã objãã¤ã³ã¹ã¿ã³ã¹å¤æ°ã®å ´åãã¹ãã¼ããã£ã¹ããå¹ããªã Nullãã§ãã¯ããã夿°ãè¤æ°ããå ´åãifæ¡ä»¶ã«ã¿ã©ã¿ã©ã¨æ¸ããªã
{{#tags}}- {{label}}
{{/tags}}