#46 PrototypeProgram gets always overwritten by GPPopulation

[kelsaka]

GP Programming does not respect a PrototypeProgram configured with a GPConfiguration.

In org.jgap.gp.impl.GPPopulation: void create(..) line 195 it is checked for

if (i == 0) {
getGPConfiguration().setPrototypeProgram(program);
}

as the enclosing loop always starts with i:=0, an initially set prototype program gets overwritten, before a fitness check is applied to the prototype program in the following else if branch. Thus, the "real" prototype is probably never used.

I suppose in line 195 there should better be an additional check for null before overwriting the prototype:

if (i == 0 && getGPConfiguration().getPrototypeProgram() == null) {
getGPConfiguration().setPrototypeProgram(program);
}

[Klaus]

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You are right! I fixed the bug according to your suggestion. A test case revealing the bug will follow. Thanx!

[Klaus]

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done.