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  3. What is the most efficient approach to record each line...

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What is the most efficient approach to record each line from a input file ?

Charley Chen
Charley Chen over 14 years ago

 Hi All,

I use table to record each line & its value , but it will become slower and slower when time left .

Though I can get table[A11100] = list(1000000 2000000 3000000 4000000) very quickly , But must when it finished loop.

What is the best way to do it ?

;write a template file
        ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
        getCurrentTime()
        outPort = outfile("test")
        count = 1000000
        fileCount = 1
        for(i 1 count
            fprintf(outPort "1000000 2000000 3000000 4000000\n")
        );   
        close(outPort)
        getCurrentTime()
        ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 

        ;read each line to record
        ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
        nextLine = nil
        inPort = infile("test")
       getCurrentTime()
 when(inPort
      fileCount = 1
      table = makeTable("table" nil)
      while(gets(nextLine inPort)
              qq = parseString(nextLine "\n")
              str = sprintf(nil "A%d" fileCount)
              table[str] = list(1000000 2000000 3000000 4000000)
              fileCount++
      );while   
 );when
      inPort = nil
      getCurrentTime()
        ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

 

Thank you,

Charley

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  • Charley Chen
    Charley Chen over 14 years ago

    Andrew,

    If I use integer as key as below, I can not know the group A or C or ... , no index name

    table[0] = list(1000000 2000000 3000000 4000000)    ==> table[A0] = list(1000000 2000000 3000000 4000000) 

    .

    .

    table[11110] = list(1000000 2000000 3000000 4000000 10 22)  ==>  table[C11110] = list(1000000 2000000 3000000 4000000 10 22)

    whta I want is to quick store and quick look up the value from the table[

    Thank you,

    Charley

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  • Charley Chen
    Charley Chen over 14 years ago

    Andrew,

    If I use integer as key as below, I can not know the group A or C or ... , no index name

    table[0] = list(1000000 2000000 3000000 4000000)    ==> table[A0] = list(1000000 2000000 3000000 4000000) 

    .

    .

    table[11110] = list(1000000 2000000 3000000 4000000 10 22)  ==>  table[C11110] = list(1000000 2000000 3000000 4000000 10 22)

    whta I want is to quick store and quick look up the value from the table[

    Thank you,

    Charley

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