ftexists — Query if a given table exists
Plugin opcode in emugens.
Returns 1 if a given index refers to an existing table, 0 if the table does not exist. Works at i-time if output is an ivariable, at k-time otherwise
Here is an example of the ftexists opcode. Play ftexists.csd
Example 387. Example of the ftexists opcode.
<CsoundSynthesizer> <CsOptions> --nosound </CsOptions> <CsInstruments> ; This is the example file for ftexists /* ftexists Returns 1 if a given table index refers to an existing ftable iexists ftexists ifn kexists ftexists kfn Args: ifn / kfn: the table index to query Returns: iexists / kexists: 1 if a table with index ifn exists, 0 otherwise */ gifn1 ftgen 0, 0, 8, 2, 0 instr 1 iexists1 ftexists gifn1 print iexists1 iexists2 ftexists 2 print iexists2 kexists ftexists 3 printf "table 3 exists at time %f", kexists, timeinsts() endin </CsInstruments> <CsScore> f 2 0 8 2 0 f 3 1.5 8 2 0 i 1 0 2 </CsScore> </CsoundSynthesizer>