* Sebastian Moeller <moell...@gmx.de> [06.10.2016 13:48]:
> It might be not be necessary, but does it hurt? Are you concerned that the
> current practice will hide variables changing their "type" from arithmetic
> and that removing the $ prefix will silence this instead of giving an error
> message? Or does this change improve run time of the scripts noticeable? I am
> just asking, as a non-experts in shell coding it seems less error prone to
> always use ${VARIABLE_NAME}...
>
e.g. this case:
A=7
B=3
SUM=$(( A + B )) # correct
instead of SUM=$(( $A + $B )) # old
it is not about hurting, it's about make the code checkable.
"every" parser will complain about this mistake, so satisfy them
and we safe a few bytes 8-)
bye, bastian
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