array >
filter

Filter(Input Strings,value[,include[,compare]])

过滤出所含某特定元素并组成数组

Filter(Input Strings,value[,include[,compare]])

Input Strings : The main strings
Value : to be searched value
Include : [ True ::( Default ) the array  contains value ]  
[ False :: the array that does not contain value ]
compare :optional
Numeric value indicating the kind of comparison 
to use when evaluating substrings. See Settings 
section for values
comparison same as Split
vbBinaryCompare : 0 : Perform a binary comparison 
vbTextCompare : 1 : Perform a textual comparison 

a memo report weather and date in one data cell or a text file
weather=
"1/1/2006w:sun,1/2/2006w:rain,1/3/2006w:storm,1/4/2006w:...."

<%
dim weather,dayArray,queryDay
queryDay="8/6/2006"
weather=request("weather")
dayArray=Split(weather,",")
' if the end of weather string is ( , ) then UBound(dayArray)-1
for I=0 to UBound(dayArray)-1    ' -1 is for ( , ) ending

' way 1 ---- filter to find queryDay
  TrueDayArray=Filter(dayArray,queryDay)
  if TrueDayArray(0)<>empty then
  document.write(replace(TrueDayArray(0),"w:"," weather is "))
  end if

' way 2 ---- instr to find queryDay
   if instr(dayArray(I),queryDay)>0 then
   response.write replace(dayArray(I),"w:"," weather is ")&"<br>"
   response.write replace(dayArray(I),queryDay&"w:","")
   end if
next
%>

Filter 常配合 Split, UBound, Array, instr, 
replace 更加方便呼叫出所要的资料

Example :
8/6/2006 weather is sun
sun