Would type annotations not be a cleaner way of achieving discrimination between types?
Would these APIs be redundant if we had type annotations? On Mon, Aug 5, 2013 at 8:13 AM, Bruno Jouhier <bjouh...@gmail.com> wrote: > From a dev standpoint what we need is a clean API to discriminate between > types. Sometimes we want to discriminate between objects (mutable) and > values (immutable), sometimes between functions and non functions, sometimes > between numbers, strings and others, etc. And we don't want to have to write > an extra test to exclude null from objects. > > As we cannot break the existing typeof and its little warts, could we > introduce a new call, something like Object.typeInfo(x), that would return a > little hash like: > > { type: "int64", immutable: true, number: true, ... } > { type: "string", immutable: true, number: false, ... } > { type: "array", immutable: false, number, false, ... } > > The idea it to have boolean flags like immutable/number/... to categorize > types. This way we can discriminate by testing a flag instead of having to > test complex combinations of typeof, Array.isArray, etc. > > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss > _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss