On Tuesday, 6 December 2016 at 10:52:44 UTC, thedeemon wrote:
It's rather simple, just take a look at its source code in
std.array.
It's an ordinary linear array partially filled with your data.
[...]
2. Up until 4 KB it reallocates when growing, but after 4 KB
the array lives in a larger pool of memory where it can often
grow a lot without reallocating, so in many scenarios where
other allocations do not interfere, the data array of appender
grows in place without copying any data, thanks to GC.extend()
method.
I always assumed it kept its own manually allocated array on a
malloc heap :O
Hence a practice of using .dup and .idup on the .data member when
you're happy with the result?
