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AEvalAT Function (Array OfT, FuncT, T, DWord, DWord)

X#
Execute a code block for each element in an array and assign the return value to each element in the array.

Namespace:  XSharp.RT
Assembly:  XSharp.RT (in XSharp.RT.dll) Version: 2.21
Syntax
Copy
 FUNCTION AEvalA<T>(
	aArray AS ARRAY OF<T>,
	cbBlock AS Func<T, T>,
	nStart AS DWORD,
	nCount AS DWORD
)
 AS ARRAY OF<T>
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Parameters

aArray
Type: Array OfT
The array to traverse.
cbBlock
Type: FuncT, T
The code block to execute.
nStart
Type: DWord
The starting element.
A negative value starts from the end.
If nCount is positive, the default value is 1; if nCount is negative, the default value is the length of the array.
nCount
Type: DWord
The number of elements to process from nStart.
A negative value starts from the end.
The default is all elements to the end of the array.

Type Parameters

T
The type of the array elements

Return Value

Type: Array OfT
A reference to aArray.
Remarks
AEvalA() is similar to AEval() in that they both evaluate a code block once for each element of an array, passing the element value as an argument.
The difference is that while AEval() ignores the return value of the code block, AEvalA() assigns the return value to the array element.
See AEval() for details.
Examples
This example uses AEvalA() to create an array of file names in lowercase:
X#
Copy
1FUNCTION Start()
2    LOCAL aFiles := Directory("*.dbf")
3    LOCAL nTotal AS SHORTINT
4    AEvalA(aFiles,{|aDBFFile| LOWER(PadR(aDBFFile[F_NAME], 10))})
See Also