ValueGst.subtract

Subtracts @subtrahend from @minuend and stores the result in @dest. Note that this means subtraction as in sets, not as in mathematics.

struct ValueGst
static
bool
subtract

Parameters

dest Value

the destination value for the result if the subtraction is not empty. May be %NULL, in which case the resulting set will not be computed, which can give a fair speedup.

minuend Value

the value to subtract from

subtrahend Value

the value to subtract

Return: %TRUE if the subtraction is not empty

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