程序語言設計-華盛頓s

1、Programming LanguagesDan GrossmanStandard-Library DocumentationOne last thingThis topic is not particularly related to the rest of the section, but we made it a small part of Homework 3ML, like many languages, has a standard libraryFor things you could not implement on your ownExamples: Opening a fi

2、le, setting a timerFor things so common, a standard definition is appropriateExamples: List.map, string concatentationYou should get comfortable seeking out documentation and gaining intuition on where to lookRather than always being told exactly what functions do2Dan Grossman, Programming Languages

3、Where to look Organized into structures, which have signaturesDefine our own structures and signatures next sectionHomework 3: Find-and-use or read-about-and-use a few functions under STRING, Char, List, and ListPairTo use a binding: StructureName.functionNameExamples: List.map, String.isSubstring3D

4、an Grossman, Programming LanguagesREPL trickI often forget the order of function argumentsWhile no substitute for full documentation, you can use the REPL for a quick reminderJust type in the function name for its typeCan also guess function names or print whole structureNo special support: this is just what the REPL doesSome REPLs (for other languages) have special supp