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Re: SAY AND GET
Posted: Thu Mar 29, 2018 9:03 am
by esgici
asharpham wrote: ↑Thu Mar 29, 2018 8:05 am
... I wasn't expecting to only find it in the Clipper references I guess.
...
Hi Alan
Please don't worry; this is a common situation especially for beginners
And beware to confusing
relations and differences between Clipper, Harbour and HMG
Happy HMG'ing
Re: SAY AND GET
Posted: Fri Apr 13, 2018 2:23 am
by asharpham
I've had a look at both the links above but I'm now revealing my limited knowledge of Clipper as well as HMG/Harbour. What is the difference between REQUEST & #Include?
Re: SAY AND GET
Posted: Fri Apr 13, 2018 3:37 pm
by PeteWG
asharpham wrote: ↑Fri Apr 13, 2018 2:23 amWhat is the difference between REQUEST & #Include?
a
'REQUEST' is a statement directed to the
linker that demands to link the requested modules
while an
'#include' is a directive to the
compiler (in fact to the
pre-processor) that instructs him
to incorporate a source file exactly in place where the 'include' line is shown
and to use its contents either to resolve undefined symbols encountered during compilation process
or to compile it as is, like any other source code.
an other significant distinction between them two, is that the
'REQUESTed' modules are
binary entities
(i.e. already compiled) consisting of core functions (or even UDFs) found in libraries,
while the
'included' modules are
source-code files (plain text, usually) containing other directives
(defines etc) and/or pure source code lines.
regards,
Pete
Re: SAY AND GET
Posted: Fri Apr 13, 2018 6:31 pm
by ROBROS
PeteWG wrote: ↑Fri Apr 13, 2018 3:37 pm
asharpham wrote: ↑Fri Apr 13, 2018 2:23 amWhat is the difference between REQUEST & #Include?
a
'REQUEST' is a statement directed to the
linker that demands to link the requested modules
while an
'#include' is a directive to the
compiler (in fact to the
pre-processor) that instructs him
to incorporate a source file exactly in place where the 'include' line is shown
and to use its contents either to resolve undefined symbols encountered during compilation process
or to compile it as is, like any other source code.
an other significant distinction between them two, is that the
'REQUESTed' modules are
binary entities
(i.e. already compiled) consisting of core functions (or even UDFs) found in libraries,
while the
'included' modules are
source-code files (plain text, usually) containing other directives
(defines etc) and/or pure source code lines.
regards,
Pete
Well explained, Thx.
Robert