If you want to use hashrefs, and choose to ignore
tye's
advice (in favor of speed?), you can get also the key values
using
hv_fetch:
int
calculate(hashref)
SV * hashref;
INIT:
HV * myhash;
SV **svp;
int keylen;
CODE:
char * name;
float theta;
myhash = (HV *)SvRV(hashref);
svp = hv_fetch(myhash,"NAME",4,0);
if (svp) name = SvPV(*svp,keylen);
svp = hv_fetch(myhash,"THETA",5,0);
if (svp) theta = SvNV(*svp);
printf("%s,%.1f\n",name,theta);
.
.
.
RETVAL = 1;
OUTPUT:
RETVAL
If you're determined to use hashes, check out
perlguts, and
the book "Advanced Perl Programming" by Sriram Srinivasan.
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