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22. Parallel Computation - Extra Functions

### 22. Parallel Computation - Extra Functions

`ChildFunction("function(arg);",s)` This runs the GAP function "function(arg);" on a child process accessed by the stream s. The output from "func;" can be accessed via the stream.
`ChildRead(s)` This returns, as a string, the output of the last application of ChildFunction("function(arg);",s).
`ChildReadEval(s)` This returns, as an evaluated string, the output of the last application of ChildFunction("function(arg);",s).
`ParallelList(I,fn,L)` Inputs a list I, a function fn such that fn(x) is defined for all x in I, and a list of children L. It uses the children in L to compute List(I,x->fn(x)). (Obviously the function fn must be defined on all child processes in L.)

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