In December, the UK, Norway, the Faroe Islands and Iceland agreed to cut mackerel catches by 48%, but Waitrose said this did not go far enough.
is_valid: bool = true;Booleans are returned by comparison and logical operators:，详情可参考新收录的资料
，更多细节参见新收录的资料
optional log;requires means the program cannot run without these capabilities. If any are missing, the host refuses to execute the script:。新收录的资料是该领域的重要参考
Some educational compilers, MinCaml benchmarks