ARRAY
BY : SITI MARIYAH, SST
ARRAY
Contoh array 1 dimensi:
kelasku(1,5) = {“1A”, “1B”, “1C”, “1D”, “1E”}
Data 5 kelas dimasukkan dalam satu array yang
bernama kelas.
Contoh array 2 dimensi :
kelasku(2, 3) = {(“1A”, “1B”, “1C”),(“1E”, “1F”, “1G”)}
DIMENSION COMMAND
Logic :
DIMENSION ArrayName1(nRows1 [, nColumns1])
[AS Type] [, ArrayName2(nRows2 [,nColumns2])]
PARAMETER
1. ArrayName1  nama array
Kita bisa membuat multiple array dengan satu dimensi
hanya dengan menambahkan nama array.
Contoh :
DIMENSION arrayName..,arrayName2…,arrayName3…
2. nRows1 [,nColumns1]  jumlah baris dan kolom
array
Contoh :
DIMENSION arraySatu(10)  array 1 dimensi dengan
10 baris dan 1 kolom
DIMENSION arraySatu(2,4)  array 2 dimensi dengan 2
baris dan 4 kolom
DEKLARASI ARRAY
Contoh deklarasi :
DIMENSION arraySatu(10), arrayDua[2,4], arrayTiga(3,3)
DIMENSION arraySatu[10], arrayDua(2,4), arrayTiga[3,3]
Ukuran array tergantung pada banyaknya elemen
yang disimpan dalam array tersebut. Elemen array
dapat memiliki tipe data apa saja dan diinisialisasi
False (.F.) untuk pertama kali.
OPERASI ARRAY
STORE TO : Untuk menginisialisasi semua elemen
dengan
nilai yang sama.
Contoh :
DIMENSION arraySatu(10,3)
STORE “initial” TO arraySatu
Logic di atas untuk menyimpan string initial ke
arraySatu. Sehingga initial menjadi elemen pertama
(baris1,kolom1) arraySatu
OPERASI ARRAY(2)
Array Subscript : digunakan untuk mengakses dan
manipulasi elemen array.
• Selain array subscript bisa juga menggunakan nama
array dan indeks.
• Pada array 1 dimensi, subscript digunakan untuk
mengidentifikasi nomor baris array. Contoh, subscript
untuk elemen yang berada di baris ketiga adalah 3
• Pada array 2 dimensi, subscript digunakan untuk
mengidentifikasi elemen array. Subscript yang pertama
menyatakan baris, subscript kedua menyatakan kolom
DIMENSION arrayName[5,2] arrayName[1,2] = 966789
• Creates a one- or two-dimensional array.
• Visual FoxPro arrays are one-based
• DIMENSION is identical in operation and similar in
syntax to the DECLARE command
• Copies elements from one array to another array.
• Deletes an element from a one-dimensional array, or a
row or column from a two-dimensional array.
• Adds one record to the currently selected table for each
row in an array and fills each record with data from the
corresponding array row.
• Copies data from the currently selected table to an array.
• Executes the first set of commands whose conditional
expression evaluates to true (.T.).
Contoh
STORE CMONTH(DATE()) TO month
DO CASE
CASE INLIST(month, 'January', 'February', 'March')
STORE 'first quarter' TO rpt_title
CASE INLIST(month, ‘April', ‘May', ‘June')
STORE ‘second quarter' TO rpt_title
CASE INLIST(month, 'July', ‘August', ‘September')
STORE ‘third quarter' TO rpt_title
OTHERWISE
STORE ‘fourth quarter' TO rpt_title
ENDCASE
WAIT WINDOW rpt_title NOWAIT
• Executes a set of commands within a conditional loop.
• Exits a DO WHILE, FOR, SCAN, or TRY…CATCH…FINALLY
structure.
Contoh
CLOSE DATABASES OPEN DATABASE (HOME(2) + 'Data\testdata')
USE products && Opens Products table
SET TALK OFF
gnStockTot = 0
DO WHILE .T. && Begins loop
IF EOF( )
EXIT
ENDIF
IF unit_price < 20
SKIP LOOP
ENDIF
gnStockTot = gnStockTot + in_stock
SKIP
ENDDO && Ends loop
CLEAR
? 'Total items in stock valued over 20 dollars:'
?? gnStockTot
• Executes a set of commands for each element in a Visual
FoxPro array or collection.
Contoh
DIMENSION cMyArray(3)
cMyArray[1] = 'A'
cMyArray[2] = 'B'
cMyArray[3] = 'C'
FOR EACH cMyVar IN cMyArray
? cMyVar
ENDFOR
• Executes a set of commands a specified number of
times.
Contoh
FOR gnCount = 1 TO 10
? gnCount
ENDFOR
Contoh
OPEN DATABASE (HOME(2) + 'Data\TestData') USE
Customer
FOR gnCount = 1 TO 10 STEP 2
GOTO gnCount
DISPLAY Company
ENDFOR
• Conditionally executes a set of commands based on the
value of a logical expression.
Contoh
USE Customer && Open customer table
GETEXPR ‘ Enter condition to locate ' TO gcTemp;
TYPE 'L' DEFAULT ‘ COMPANY = ""' LOCATE
FOR &gcTemp && Enter LOCATE expression
IF FOUND( ) && Was it found?
DISPLAY && If so, display the record
ELSE && If not found
? 'Condition ' + gcTemp + ' was not found '
&&Display a message
ENDIF
• Returns program control directly to the beginning of a
looping structure.
• Moves the record pointer through the currently selected table
and executes a block of commands for each record that meets
the specified conditions.