Singular Manual: debug_log

| #### D.6.4.13 debug_log Procedure from library `classify.lib` (see classify_lib). Usage: debug_log(level,li); level=int, li=comma separated "message" list Compute: print "messages" if level>=@DeBug. useful for user-defined trace messages. Example:
    LIB "classify.lib";
    example init_debug;
    ==> // proc init_debug from lib classify.lib
    ==> EXAMPLE:
    ==>   init_debug();
    ==>   debug_log(1,"no trace information printed");
    ==>   init_debug(1);
    ==> Debugging level change from  0  to  1
    ==>   debug_log(1,"some trace information");
    ==> some trace information
    ==>   init_debug(2);
    ==> Debugging level change from  1  to  2
    ==>   debug_log(2,"nice for debugging scripts");
    ==> Debug:(2):  nice for debugging scripts
    ==>   init_debug(0);
    ==> Debugging switched off.
    ==>
See also: init_debug.

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