Forum Discussion

Komag's avatar
Komag
Roku Guru
11 years ago

Checking Type() is case sensitive - undocumented?

I've noticed that when I check the Type of a variable, it's case sensitive (at least for String/roString). Example: IF Type(id) = "String" OR Type(id) = "roString" ' Could be either one, depending...
Roku Developer Program
TheEndless's avatar
TheEndless
Roku Guru
11 years ago
"Komag" wrote:
What about roArray, roBoolean, and Integer and roInteger?

I'm assuming:
getInterface(val, "ifArray") <> invalid
getInterface(val, "ifBoolean") <> invalid
getInterface(val, "ifInt") <> invalid

Generally speaking, yes, but I've apparently run into at least one occasion where the interface check didn't work as expected, resulting in me having these utility functions:
Function IsBoolean(value As Dynamic) As Boolean
    Return GetInterface(value, "ifBoolean") <> invalid
End Function

Function IsInteger(value As Dynamic) As Boolean
    Return GetInterface(value, "ifInt") <> invalid And (Type(value) = "roInt" Or Type(value) = "roInteger" Or Type(value) = "Integer")
End Function

Function IsFloat(value As Dynamic) As Boolean
    Return (GetInterface(value, "ifFloat") <> invalid Or (Type(value) = "roFloat" Or Type(value) = "Float"))
End Function

Function IsDouble(value As Dynamic) As Boolean
    Return (GetInterface(value, "ifDouble") <> invalid Or (Type(value) = "roDouble" Or Type(value) = "roIntrinsicDouble" Or Type(value) = "Double"))
End Function

Function IsList(value As Dynamic) As Boolean
    Return GetInterface(value, "ifList") <> invalid
End Function

Function IsArray(value As Dynamic) As Boolean
    Return GetInterface(value, "ifArray") <> invalid
End Function

Function IsAssociativeArray(value As Dynamic) As Boolean
    Return GetInterface(value, "ifAssociativeArray") <> invalid
End Function

Function IsString(value As Dynamic) As Boolean
    Return GetInterface(value, "ifString") <> invalid
End Function

Function IsDateTime(value As Dynamic) As Boolean
    Return (GetInterface(value, "ifDateTime") <> invalid Or Type(value) = "roDateTime")
End Function

Function IsXmlElement(value As Dynamic) As Boolean
    Return GetInterface(value, "ifXMLElement") <> invalid
End Function

Function IsFunction(value As Dynamic) As Boolean
    Return GetInterface(value, "ifFunction") <> invalid
End Function

Function IsHttpAgent(value As Dynamic) As Boolean
    Return GetInterface(value, "ifHttpAgent") <> invalid
End Function


Note that roDateTime, in particular, doesn't appear to actually implement the ifDateTime interface... not sure what that's all about.