hooks -- list hooks attached to a key

Synopsis

• Usage:

  hooks key

  hooks store

  hooks(store, key)

• Inputs:
  • key, a sequence or a symbol,
  • store, a hash table, the hash table where the hooks are stored
• Optional inputs:
  • Strategy => a thing, default value null, only list hooks with the given strategy
• Outputs:
  • a numbered vertical list, of those hooks associated with key or stored in store

Description

i1 : hooks(intersect, Ideal, Ideal)

o1 = {0 => (intersect, Ideal, Ideal, Strategy => Default)    }
     {1 => (intersect, Ideal, Ideal, Strategy => Elimination)}
     {2 => (intersect, Ideal, Ideal, Strategy => Monomial)   }

o1 : NumberedVerticalList

i2 : code 0

o2 = -- code for method: intersect(Ideal,Ideal)
     /usr/share/Macaulay2/Core/intersect.m2:116:26-116:60: --source
         Default => (opts, L) -> ideal intersect(opts, apply(L, module)),
     ------------------------------------------------------------------------
     code:

i3 : hooks(quotient, Strategy => Iterate)

o3 = {0 => (quotient, Ideal, Ideal, Strategy => Iterate)  }
     {1 => (quotient, Module, Ideal, Strategy => Iterate) }
     {2 => (quotient, Module, Module, Strategy => Iterate)}

o3 : NumberedVerticalList

See also

• addHook -- add a hook function to an object for later processing
• runHooks -- run the hook functions stored in an object