Infinity-Profan

English

yet get Arrays as Procedures-Parameter byRef instead of byVal transfer, means only The address instead of a copy. this is of course faster, can but To unexpected Ergebnissen lead in a slight To erlernenden Language.

now go Arrays as Procedures-Parameter standardmäßig byVal transfer, except one setting one @ to whom Variablennamen in the Parameterdeklarationsanweisung:

standard, byVal:

Compile Mark Separation

var a=[10 20 30]
Test a
print a// gives 10,20,30 from

proc Test a

    a[0]=55

endproc

If byRef erwünscht (faster):

Compile Mark Separation

var a=[10 20 30]
Test a
print a// gives 55,20,30 from

proc Test @a

    a[0]=55

endproc

On Parameter, The not of type aray transfer go, has @ none Einfluss, however becomes The check for this Parameter on a aray-copy at settle the @-Zeichens shorted.

with functions, with them it on supreme speed ankommt, is means a optimization by @ for each Parameter with einzubeziehen.

deference:

an similar entrapment is simple allocate Array=Array:

Compile Mark Separation

var a b=[10 20 30]
a=b
a[0]=55
print b// shows 55,20,30 though b syntaktisch not manipulating watts

want is a copy of a aray for such Zuweisungen, then can for The function arr uses go:

Compile Mark Separation

var a b=[10 20 30]
a=arr(b)
a[0]=55
print b// shows 10,20,30
print a// shows 55,20,30

XProfan X2
WinXP, SP3, Core(TM) i7-3770 @ 3.40GHz

01/11/16 ▲

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HofK

If
@parameter
in the Prozedurdefinition this Parameter as "At resse" -mistake in writing aware- commit, means The reference on the Parameter, ought to one my, that a=b for arrays too The copy of b to a bring and then a=@b The reference commit. so bräuchte one here no arr().

what speaks against it? what übersehe I thereby?

XProfan 11

01/12/16 ▲

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