Working With Text Files Easy Answer...

[mcfr1es]

For some reason the solution is just not comming to me...

I have a text files that has 50 items added to it countless times (1000 times actually). My question is, before I write those 50 items each time, how would i check to make sure that there is not an item on the list that is the same as the one that is just being entered.

this is what i Have:

$sURL = "http://www.neopets.com/neoboards/boardlist.phtml?board=1"
  $UserList = _GetUsers($sURL)
  
  $filename = "users.txt"
  FileOpen ($filename, 1)
;Check if file opened for writing OK
  If $filename = -1 Then
    MsgBox(0, "Error", "Unable to open file.")
    Exit
  EndIf
  
  For $wx = 1 to 50
    $ifexists = FileReadLine ($filename, $wx)
    If $ifexists <> $UserList[$wx]Then
      FileWriteLine($filename, $UserList[$wx])
    Else 
      MsgBox ( 3, "doubles", $UserList[$wx])
    EndIf
  Next
  FileClose ($filename)

The problem is that I cant use read line because the number of lines changes, unless instead of a line value i somehow use get size?

Edited August 11, 2004 by mcfr1es

[Jos]

For some reason the solution is just not comming to me...

I have a text files that has 50 items added to it countless times (1000 times actually). My question is, before I write those 50 items each time, how would i check to make sure that there is not an item on the list that is the same as the one that is just being entered.

this is what i Have:

The problem is that I cant use read line because the number of lines changes, unless instead of a line value i somehow use get size?

<{POST_SNAPBACK}>

I am a bit lost as to what you want to accomplish. The code looks somewhat strange trying to Read and Write from/to the same file... is this working ?

Looks to me you need to get your records and matching done in an arra7y and then when ready write the array to a file.

[mcfr1es]

I am a bit lost as to what you want to accomplish. The code looks somewhat strange trying to Read and Write from/to the same file...  is this working ?

Looks to me you need to get your records and matching done in an arra7y and then when ready write the array to a file.

<{POST_SNAPBACK}>

Ok, lets make it simple, I want to write an array to a file but before i do so, i want to check to make sure the values im entering are not already in the file, and if they are, i do not want them written. How do i go about doing this?

[Jos]

Ok, lets make it simple, I want to write an array to a file but before i do so, i want to check to make sure the values im entering are not already in the file, and if they are, i do not want them written. How do i go about doing this?

<{POST_SNAPBACK}>

I would read the records from the file into an Array.

Then check the value you want to write against the array first and when not found write it.

The thing i don't understand is that you talk about 50 records and about 1000 times.

Do you only want to compare against the first 50 records or all records ??

Edited August 11, 2004 by JdeB

[emmanuel]

I would read the records from the file into an Array.

Then check the value you want to write against the array first and when not found write it.

The thing i don't understand is that you talk about 50 records and about 1000 times.

Do you only want to compare against the first 50 records or all records ??

<{POST_SNAPBACK}>

sounds to me like he's trying to get usernames off of something like a forum with 50 users and 20 posts each, and he just wants a list of usernames without dupes...

[mcfr1es]

sounds to me like he's trying to get usernames off of something like a forum with 50 users and 20 posts each, and he just wants a list of usernames without dupes...

<{POST_SNAPBACK}>

exactly what emmanuel said and i want no dupes

(50 x 1000 actually...)

Edited August 11, 2004 by mcfr1es

[mcfr1es]

I would read the records from the file into an Array.

Then check the value you want to write against the array first and when not found write it.

The thing i don't understand is that you talk about 50 records and about 1000 times.

Do you only want to compare against the first 50 records or all records ??

<{POST_SNAPBACK}>

Every time that 50 new records are added, i want it to check the text file to see if the values that im entering are already there and if not i wish them to be added

[pekster]

Every time that 50 new records are added, i want it to check the text file to see if the values that im entering are already there and if not i wish them to be added

<{POST_SNAPBACK}>

Read the list of users into an array that you can use durring program execution.

Then, for each new user, check it against the entire array, one element at a time (hint: you'll want a For loop for this task.)

If it does exist, you can continue onto the next user without adding the user, since that is already added to the array. If not, expand the array with ReDim, and continue onto the next name.