Is it possible to manually manage the memory without having to use C Standard Library?

[jar1]

@Sukera

While disabling GC is an option, writing your code in a way that doesn’t require GC to run much (if at all) by reducing allocations in the first place, is as good as managing memory manually with malloc et al.

Data structures often allocate without user control, so this may be hard to achieve in many cases. For instance, in Julia I cannot fill a Dict using a preallocated backing buffer; other languages make this easier.

Another example is that views can allocate without user approval and hurt performance [RFC/ANN] Restacker.jl: A workaround for the heap-allocated-immutable problem?.