一、
concat(Things) -> string()
Types:
Things = [Thing]
Thing = atom() | integer() | float() | string()
Concatenates the text representation of the elements of Things. The elements of Things can be atoms, integers, floats or strings.
> lists:concat([doc, '/', file, '.', 3]).
"doc/file.3"
備注:如果Thing不是List,則會被轉化成List(類似調用Integer_to_List())再完成拼接。
備注2:string()代表了可以是真的字元串,也可以是一些非字元串的整數的清單。
二、
flatten(DeepList) -> List
Types:
DeepList = [term() | DeepList]
List = [term()]
Returns a flattened version of DeepList.
備注:扁平化,類似于打開一層層的嵌套,将term()最終組成一個List.