Evolution: the meaning of 4 and 5 GL. But a High Level Programming Lenguaje NEVER will be as FAST and SMALL as ASSEMBLER Lenguaje, by many reasons. So We are Clarion Programmers: a 4 GL (Dunno if still being 3 GL) we are not responsable for the Optimization of ASSEMBLER code that finally generate Clarion in the Exe's, but for the way we use the High Lenguaje instructions.
So I make some Testing in find the Faster instruccion in
CONDITIONAL STATEMENT EXECUTION ESTRUCTURES: [color red]
IF, CASE, EXECUTE, CHOOSE, INLIST.[/red] These are all That I know by now.
The BenchMark is base on a 10 Options to look for (All falses), and finally select an 11 Option when there's no matching values. All inclosed in a [/b] [color red]10,000,000[/red][/b] Times LOOP
Here the code:
[/b][color red]IF ESTATEMENT[/red][/b]
Code:
CheckinTime# = CLOCK()
TRUELIES# = 69
LOOP 10000000 TIMES
IF TRUELIES# = 1
TRUELIES# = 1
ELSIF TRUELIES# = 2
TRUELIES# = 1
ELSIF TRUELIES# = 3
TRUELIES# = 1
ELSIF TRUELIES# = 4
TRUELIES# = 1
ELSIF TRUELIES# = 5
TRUELIES# = 1
ELSIF TRUELIES# = 6
TRUELIES# = 1
ELSIF TRUELIES# = 7
TRUELIES# = 1
ELSIF TRUELIES# = 8
TRUELIES# = 1
ELSIF TRUELIES# = 9
TRUELIES# = 1
ELSIF TRUELIES# = 10
TRUELIES# = 1
ELSE
TRUELIES# = 96
END
END
MESSAGE('Holding: ' & CLOCK()-CheckinTime# & ' Cent/Second','First Down !!!!!')
[/b][color red]CASE ESTATEMENT[/red][/b]
Code:
CheckinTime# = CLOCK()
TRUELIES# = 69
LOOP 10000000 TIMES
CASE TRUELIES#
OF 1
TRUELIES# = 1
OF 2
TRUELIES# = 2
OF 3
TRUELIES# = 3
OF 4
TRUELIES# = 4
OF 5
TRUELIES# = 5
OF 6
TRUELIES# = 6
OF 7
TRUELIES# = 7
OF 8
TRUELIES# = 8
OF 9
TRUELIES# = 9
OF 10
TRUELIES# = 10
ELSE
TRUELIES# = 96
END
END
MESSAGE('Holding: ' & CLOCK()-CheckinTime# & ' Cent/Second','First Down !!!!!')
[/b][color red]EXECUTE ESTATEMENT[/red][/b]
Code:
CheckinTime# = CLOCK()
TRUELIES# = 69
LOOP 10000000 TIMES
EXECUTE TRUELIES#
TRUELIES# = 1
TRUELIES# = 2
TRUELIES# = 3
TRUELIES# = 4
TRUELIES# = 5
TRUELIES# = 6
TRUELIES# = 7
TRUELIES# = 8
TRUELIES# = 9
TRUELIES# = 10
ELSE
TRUELIES# = 96
END
END
MESSAGE('Holding: ' & CLOCK()-CheckinTime# & ' Cent/Second','First Down !!!!!')
[/b][color red]CHOOSE ESTATEMENT[/red][/b]
Code:
CheckinTime# = CLOCK()
TRUELIES# = 69
LOOP 10000000 TIMES
TRUELIES# = CHOOSE(TRUELIES#,1,2,3,4,5,6,7,8,9,10,96)
END
MESSAGE('Holding: ' & CLOCK()-CheckinTime# & ' Cent/Second','First Down !!!!!')
[/b][color red]INLIST ESTATEMENT[/red][/b]
Code:
CheckinTime# = CLOCK()
TRUELIES# = 69
LOOP 10000000 TIMES
TRUELIES# = INLIST(TRUELIES#,'1','2','3','4','5','6','7','8','9','10')
IF TRUELIES# = FALSE
TRUELIES# = 96
END
END
MESSAGE('Holding: ' & CLOCK()-CheckinTime# & ' Cent/Second','First Down !!!!!')
[color red]
STATS:[/color]
Time is in Hundredths of a Sec. Test was made in a Pentium III, 256 RAM & NT 4.0 WorkStation SP 6a, Using C55f ABC. (**** The Small, the Better ****)
[color blue]IF STATEMENT:[/color][color red]
-> 35[/color]
[color blue]CASE STATEMENT:[/color][color red]
-> 33[/color]
[color blue]EXECUTE STATEMENT:[/color][color red]
-> 36[/color]
[color blue]CHOOSE STATEMENT:[/color][color red]
-> 8[/color]
[color blue]INLIST STATEMENT:[/color][color red] -> 1619
[/color]
[color red]
CONCLUTION:[/color]
Well, at least you're programming a FAST requiring App. like Images and Data process, the Time you save by choosing the
CHOOSE statement is not trascendental matters. Finnally the way your [color red]CODE LOOKS LIKE[/color] is order to be the easiest understanding by others or to be corrected by yourself after a long time periods, is the Conditional Statement that MUST TO BE CHOOSEN.
Bye
