"vba array" Code Answer's

You're definitely familiar with the best coding language VBA that developers use to develop their projects and they get all their queries like "vba array" answered properly. Developers are finding an appropriate answer about vba array related to the VBA coding language. By visiting this online portal developers get answers concerning VBA codes question like vba array. Enter your desired code related query in the search bar and get every piece of information about VBA code related question on vba array. 

vba array from worksheet data

By Excel HeroExcel Hero on Oct 21, 2020
'In Excel VBA, the quickest way to pull data from a worksheet into a VBA array
'is to do it all at once:

Dim v As Variant
v = Range("a1:b20").Value

'Please note that, here, 'v' is a scalar variable of type Variant. Scalar means
'that 'v' is NOT an array. But interestingly in this case, 'v' can be 
'treated exactly like an array. To understand why, please keep reading...

'Variant variables can be assigned many types of values, for example, 
'all of the following (and many others) are valid:

v = 123
v = 12.19971
v = "abcdefg"
Set v = New Collection

'IN ADDITION, a Variant can also be assigned an entire array, dynamic or static:

Dim v As Variant, arr() As Long
  
ReDim arr(1 to 4)
arr(1) = 11
arr(2) = 12
arr(3) = 13
arr(4) = 14
  
v = vArrA
  
'Now that the array of Longs 'arr' has been assigned to the Variant 'v', we can
'access the elements directly from 'v':
  
MsgBox v(4)		'<--displays: 14
  
'A very efficient way to read data from a worksheet range is to directly assign
'the data to a Variant by having that variable point to an array of Variants:
 
v = Sheet1.Range("a1:b20").Value
  
'The 'Value' property of the Range object creates a 2D array of Variant 
'elements the same size as the specified range, in this case,
'20 rows of 2 columns, with a lower bound of 1 for both array dimensions.
'Here, we assign that array directly to the scalar Variant 'v', all in one go. 
'The scalar Variant 'v' can now be treated as an array, even though it is 
'actually a scalar variable that points to an array THAT WAS NEVER NAMED:
  
MsgBox v(2, 20) 	'<--displays: the value that was in Sheet1, cell B20
  
'As long as the worksheet range consists of more than one cell, this method
'always results in an array and that array is always 2D. It is never 1D.

'If the range consists of only ONE cell, then this method does NOT create an
'array; instead, it assigns that one cell's scalar value to the Variant 'v'.
'This one-cell treatment must bo gaurded against.
  
'However, this shortcut method of copying Excel ranges to VBA arrays is
'very convienent and its use is common. The advantage is not only
'extremely concise code; this technique is much faster than copying
'cell-by-cell... and the speed improvement grows with the size of
'the range being copied.

'The code can even be shortened:
  
v = [Sheet1!a1:b20]
  
'The square brackets are a shorthand notation for VBA's Evaluate() function.
'This shorthand produces exactly the same results as the previous example,
'because the Evaluate() function returns a Range object in this instance and
'the default property of the Range object is the 'Value' property.

'In the above examples, the Range object is returning its 
'default... the Range.Value property. But keep in mind that the
'Range.Value2 property is roughly 20% quicker. So it slightly more
'performant to code these two examples like so:

v = [Sheet1!a1:b20].Value2
v = Sheet1.Range("a1:b20").Value2
  
'Important: the array created using the 'Value' or 'Value2' properties
'           is completely detached from the source range on the
'           worksheet. Either can be updated and the changes will NOT 
'           affect the other.


'Note: VBA utilizes the OLE/COM SAFEARRAY data structure for its
'      array implementation:
  
'      https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-oaut/2e87a537-9305-41c6-a88b-b79809b3703a
' 	   https://ecs.syr.edu/faculty/fawcett/Handouts/cse775/presentations/BruceMcKinneyPapers/safeArrays.htm
'	   http://www.roblocher.com/whitepapers/oletypes.html
'
'
'

Source: academy.excelhero.com

Add Comment

25

excerl vba array to range

By Excel HeroExcel Hero on Mar 25, 2020
arrayData = Array("A", "B", "C", "D", "E")

[a1].Resize(UBound(arrayData)) = Application.Transpose(arrayData)

Add Comment

5

excel vba reset array to zeros fastest way

By Excel HeroExcel Hero on Oct 11, 2020
'In VBA to reset a dynamic array of Longs or Doubles to all zeros, the simplest way 
'is to use the Redim() function. It's also extremely fast, roughly four times 
'faster than iterating over the array to set each element.

Sub Test_ArrayZeroing()
  	Dim i&, k&, a() As Long
    Dim time1#, time2#

    k = 100000000						'<--100 million elements
    ReDim a(1 To k)
    For i = 1 To k: a(i) = i: Next      '<--Fill array

    time1 = Timer
		'For i = 1 To k: a(i) = 0: Next '<--Method 1: 1125 ms
		ReDim a(1 To k)                 '<--Method 2:  260 ms (easy and faster)
    time2 = Timer
    
    Debug.Print "Test_ArrayZeroing: " & (time2 - time1) * 1000
End Sub


''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'If you are willing to use an external call to Windows then an much faster
'method exists:

Private Declare PtrSafe Sub AssignZero Lib "kernel32" Alias "RtlZeroMemory" (pDst As Any, Optional ByVal CB& = 4)

Sub Test_ArrayZeroing()
    Dim i&, k&, a() As Long
    Dim time1#, time2#

  	k = 100000000						'<--100 million elements
    ReDim a(1 To k)
    For i = 1 To k: a(i) = i: Next      '<--Fill array

    time1 = Timer
        'For i = 1 To k: a(i) = 0: Next '<--Method 1: 1125 ms
        'ReDim a(1 To k)                '<--Method 2:  260 ms
		AssignZero a(1), k * 4          '<--Method 3:   74 ms (super fast)
    time2 = Timer
    
    Debug.Print "Test_ArrayZeroing: " & (time2 - time1) * 1000
End Sub

'Note that when using AssignZero() with an array of Doubles, remember that
'Doubles require 8 bytes of memory each, as opposed to the 4 bytes required
'for Longs.

'So the call to AssinZero() would like this for and array of Doubles:
AssignZero a(1), k * 8

'Note that the first argument of AssignZero() should be the first element
'of the array to be reset to zeros. The lowerbound in the above examples is 1, 
'but your array may have a lowerbound of 0... or some other number.

'Note that all three methods here work for arrays of Longs and Doubles. But to
'zero out an array of Variants, the only option is Method 1. This is because
'the default value for a Variant is EMPTY, not zero... and AssignZero() will
'not work because Variants store and require metadata in addition to 
'the value... and that metadata would be wiped out by AssignZero().

'Note that to reset an array to some value other than zero, the only
'option is to use Method 1.

'Note that this entire post is about Dynamic arrays. If you wish to zero out a Static
'array of Longs or Doubles you may also use the 'Erase' statement:
Erase a

'
'
'

Source: academy.excelhero.com

Add Comment

17

vba array

By Excel HeroExcel Hero on Oct 20, 2020
'VBA arrays can be fixed-size (static) or resizable (dynamic).
'This is determined when the array is declared:
Dim vArrA()			'dynamic: size is determined later.
Dim vArrB(1 to 5)	'static:  size is determined now and cannot be changed.

'Array size refers to the number of elements in the array. For example, vArrB()
'above has five elements. The "1 to 5" is referred to as the array's range of
'indices. The range size must be positive, meaning the number of elements must 
'be positive. This means that the 2nd integer in the range must be greater 
'or equal to the first integer.

'VBA is unusual among programming languages with regards to the lowerbound or 
'the base, of arrays. Most languages require arrays to have a base (or lowerbound)
'of zero. VBA arrays can have lowerbounds of ANY Long Integer value
'(-2147483648 through +2147483647). So, all of the following are valid:

Dim vArrC(0 to 9)
Dim vArrD(1 to 10)
Dim vArrE(11 to 20)
Dim vArrF(-8877 to -8868)
Dim vArrG(-5 to 4)

'vArrC through vArrG are perfectly legal and each has precisely 10 elements. Note
'that the size AND the bounds are fixed for static arrays. Both of these
'attributes can be changed for dynamic arrays whenever the need arises:

ReDim vArrA(1 to 1000)

'And at a later point:

ReDim vArrA(0 to 4)

'A third attribute of VBA arrays is the number of dimensions. Every example on
'this page thus far represents a 1D array. Another term for a one-dimensional
'array is vector. A vector does not really have rows or columns, just
'elements.

'However, when writing a 1D array to a worksheet, Excel treats the array as if 
'it were a 2D array consisting of 1 row and n colums (where n is equal to the
'number of elements). This fact causes confusion for many.
'Consider:

ReDim vArrA(1 to 5)
vArrA(1) = "m"
vArrA(2) = "n"
vArrA(3) = "o"
vArrA(4) = "p"
vArrA(5) = "q"
Sheet1.Range("A1:E5") = vArrA

'Sheet1 now has the following values:
'    A   B   C   D   E
'1   m   n   o   p   q
'2   m   n   o   p   q
'3   m   n   o   p   q
'4   m   n   o   p   q   
'5   m   n   o   p   q

'This is why Transpose() is required to write the 1D array vertically:

Sheet1.Range("A1:E5") = WorksheetFunction.Transpose(vArrA)

'Sheet1 now has the following values:
'    A   B   C   D   E
'1   m   m   m   m   m
'2   n   n   n   n   n
'3   o   o   o   o   o
'4   p   p   p   p   p   
'5   q   q   q   q   q

'Notice that the one array with five elements can be written to multiple rows
'or with Transpose() to multiple columns. Of course, the array can be 
'written to one row:
Sheet1.Range("A1:E1") = vArrA

'Or to one column:
Sheet1.Range("A1:A5") = WorksheetFunction.Transpose(vArrA)

'Since Excel treats 1D arrays (vectors) oddly when writing to a worksheet, it
'can be easier to work with 2D arrays. In Excel VBA, 2D arrays are row major.
'This means that rows are represented by the first dimension and columns are 
'represented by the second.

ReDim vArrA(1 to 5, 1 to 10)
'            ^rows   ^cols

'vArrA is now sized as a 2D array with 5 rows of 10 columns. It can be written
'to a worksheet with 5 rows of 10 columns without using Transpose().

'Size, lower and upper bounds, and number of dimensions 
'are all fixed for static arrays and they are all specified when the array is 
'declared:

Dim vArrH(0 to 9, 1 to 10)

'vArrH is a static 2D array of 100 elements, 10 rows of 10 columns, with
'0 as the lowerbound for the first dimension (the rows) and 1 as the lowerbound
'of the second dimension (the columns). None of these attributes can later
'be changed for vArrH, since it is a static (or fixed) array. In contrast,
'all three of these attributes can be changed for a dynamic array... at any time.

'The max number of dimensions supported for an array is 60, though
'it is unusual to use arrays with more than 3 dimensions. Conceptually, a
'1D array is a vector, a 2D array can be thought of as a worksheet with rows
'and columns, a 3D array can be thought of as a workbook with multiple
'worksheets (or a cube), and a 4D array can be thought of a folder of workbooks 
'(or perhaps a hypercube). But keep in mind that each dimension can be declared
'with a different number of elements. For example, a 4D dynamic array:

ReDim vArrA(0 to 4, 1 to 10, 3 to 7, 1 to 2)
'           ^rows   ^cols    ^sheets ^books

'A fourth attribute of arrays is the data type. VBA's default data type
'is the Variant. If no data type is specified then by default the data type is actually Variant. So all the
'examples so far are Variant arrays, that is an array where every single element
'is of data type Variant.

'Here are some other data type array examples. They can be written verbosely
'or in some cases with a type declaration character:

Dim a() As Double   'or... Single, Short, Long, Currency, String, Byte, Date
					'or... Boolean, UserDefinedType, ClassName, Object

Dim a#()			'or... a!(), a%(), a&(), [email protected](), a$()

'Note: 64bit VBA also includes the LongLong data type:
Dim a() As LongLong 'or... a^()

Source: academy.excelhero.com

Add Comment

32

vba code to use array formula

By ThevarRajThevarRaj on Sep 21, 2020
Range("A1").FormulaArray = "=INDEX(subset!R1C1:R2472C10,MATCH(1,(RC1=subset!C1)(RC2=subset!C2)(RC5=subset!C5)*(RC6=subset!C6),0),10)"

Source: stackoverflow.com

Add Comment

0

All those coders who are working on the VBA based application and are stuck on vba array can get a collection of related answers to their query. Programmers need to enter their query on vba array related to VBA code and they'll get their ambiguities clear immediately. On our webpage, there are tutorials about vba array for the programmers working on VBA code while coding their module. Coders are also allowed to rectify already present answers of vba array while working on the VBA language code. Developers can add up suggestions if they deem fit any other answer relating to "vba array". Visit this developer's friendly online web community, CodeProZone, and get your queries like vba array resolved professionally and stay updated to the latest VBA updates. 

VBA answers related to "vba array"

View All VBA queries

VBA queries related to "vba array"

excel vba can a vba function return a range? vba listindex select multiple items vba excel vba how to unit test vba code how to convert arraylist to array in vba excel vba determine number of elements in a 1D array excel vba ubound on a multidimensional array vba for each array excel vba determine number of elements in an array vba delete array element vba ubound array 2-dimensional excel vba check for uninitialized or empty array vba array length excel vba pass array to and from jscript excel vba determine number of elements in a 2D array excel vba array sort vba function return array excel vba pass array to scriptcontrol excel vba dedupe array excel vba array to arraylist excel vba array of random numbers vba array contains Excel vba range to array excel vba force array elements to alphanumeric Excel VBA hide sheets with names in array vba array from worksheet data vba range to array excel vba pass array to and from script control vba string array excel vba get unique values from array excel vba initialize entire array excerl vba array to range xl vba dynamic string array vba array declaration excel vba create an array from a range excel vba reset array to zeros fastest way excel vba array vba array vba array declaration and initialization vba static array declaration vba is array redim array vba vba test if array excel vba populate array with cell values returns an array from function vba excel vba array remove first vba function array parameter excel vba quicksort array vba array to collection excel vba join variant array vba array to dictionary vba code to use array formula vba array dimensions excel vba store array and write to sheet excel vba Load csv file into an array rather than the worksheet vba foreach 2d array vba first cell in range excel vba how to activate a specific worksheet excel vba create ADO recordset from table vba check if file exists excel vba find get last row in column excel vba write string to text file excel vba check if a string contains another string excel vba last day of month excel vba base64 decode vba make a short integer from two bytes excel vba string to binary excel vba how to reset usedrange vba int to string vba remove the first character of string vba end for loop excel vba second byte from INTEGER excel vba set cell format to date vba string to double excel-vba get integer high byte vba string to integer excel vba check if directory exists xl vba check for folder excel vba recursive example factorial function excel vba factorial xl vba double quotes in string literal vba should i use .value .value2 vba round number excel vba delete sheets and stop excel asking the user to confirm excel vba add one hour excel vba convert number to binary string excel vba arraylist excel-vba long integer value to bits excel vba cells background color vba continue for each loop excel vba initialize or detect NaN, +infinity, -infinity, special values vba dictionnary excel vba last row excel vba constant excel vba wait milliseconds excel vba pause excel-vba pause excel-vba wait excel vba exit for next loop excel vba check if key is in collection vba clear a worksheet excel vba check if string entirely uppercase excel vba Populating a combobox on a userform from a range of cells excel vba initialize or detect NaN infinity infinity special values vba BitsToLong excel vba test or check if sheet exists vba function sheet exists xl-vba function sheet exists excel vba open text file vba parse xml file vba double quote vba event variable change vba replace excel vba last row in range excel vba difference between DateValue and CDate excel vba date to unix timestamp and vice versa excel vba check if string entirely alpha how to do error handling in access vba vba reverse string excel vba low byte from INTEGER excel vba how to get the old value of a changed cell excel vba query access database excel vba check if all substrings in list are in string vba declare api 64 bit 32 bit vba set row height excel vba check if string entirely lowercase excel vba get the path of current workbook excel vba stack memory structure filo excel vba clear contents and formatting of cell with a single command vba sheet hide unhide how to check is the value enterd is a number or text in vba vba ignore case excel vba ceiling function excel vba queue fifo memory structure first in first out vba redim preserve vba convert 2 bytes to an integer vba make long from two words excel vba compare 2 rows excel vba create recordset from table vba format string as cash vba sheets add at end excel vba ADOX.Column append column adBoolean error excel vba delete rows in range excel vba difference between .value .value2 .text .formula .formular1c1 excel vba range.text vba convert endianess vba make long from two shorts how to INPUT text in shape with enter and spacein vba vba BitToLong vba collection remove how to convert binary to decimal in vba code vba multiple dim excel vba select multiple ranges vba create ADO recordset from table excel vba convert text YYYYMMDD to date excel vba write to the windows registry vba ado ace sql alias ignored for calculated column message box VBA vba for next loop excel vba bitwise left shift excel vba freeze panes without select excel vba get the workbook full file name with path excel vba clean extra spaces from an entire range excel vba read registry key value excel vba remove all non alphanumeric characters from a string excel vba word count in string excel vba find last column excel vba export sheet as a csv without losing focus of my current workbook vba date to unix timestamp excel vba folder exist vba folderexists excel vba create in-memory ADO recordset from table Excel VBA Function Overloading and UDF excel vba make word from bytes excel vba convert cells(1,1) into A1 and vice versa vba sheets add after last excel vba force recalculation vba sheets add rename How do I put double quotes in a string in xl vba excel vba list all files in folder and subfolders excel vba bold some text in cell excel vba double quotes in string literal vba quotes in string literal vba query access database vba quotes in string How do I put double quotes in a string in vba excel vba msgbox excel vba least common multiple excel vba get ordinal number from cardinal number excel vba property let get excel vba check if multiple substrings in string excel vba replace tokens in a template string excel vba how to programmatically remove the marching ants after range copy vba string to binary excel vba for next loop skip vba for next loop skip excel vba function to convert column number to letter vba how to convert a column number into an Excel column excel-vba how to convert a column number into an excel column

Browse Other Code Languages

CodeProZone