##########################################################################
benchmarking with 64 elements
#insert
indexmap took 11.201µs:
hashmap took 4.098µs:
std_vec took 691ns:
linked-hash-map took 6.172µs:
fx hashmap took 1.563µs:

#iterate
indexmap took 31ns:
vec took 30ns:
hashmap took 160ns:
linked-hashmap took 30ns:
fx hashmap took 160ns:
indexmap (values only) took 30ns:
linked-hashmap (with view) took 30ns:
fx hashmap (values only) took 150ns:

#access
indexmap took 921ns:
vec took 1.703µs:
vec (if access by index would be allowed) took 30ns:
hashmap took 892ns:
linked-hashmap took 351ns:
fx hashmap took 160ns:

#clone
indexmap took 2.264µs - 64
vec took 151ns - 64
hashmap took 1.844µs - 64
linked-hashmap took 4.529µs - 64
fx hashmap took 140ns - 64

#clone_from
indexmap took 290ns - 64
vec took 70ns - 64
hashmap took 171ns - 64
linked-hashmap took 4.198µs - 64
fx hashmap took 90ns - 64

#push to back
indexmap took 7.955µs:
vec took 681ns:
hashmap unsupported
linked-hashmap took 411ns:
fx hashmap unsupported

#remove
order check: 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
indexmap took 10.611µs:
order check: 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
vec took 5.14µs:
can't preserve order in hashmap.
hashmap took 2.675µs:
order check: 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63
linked-hashmap took 4.92µs:
order check: 19 38 57 22 41 60 25 44 63 28 47 31 50 15 34 53 18 37 56 21 40 59 24 43 62 27 46 30 49 33 52 17 36 55 20 39 58 23 42 61 26 45 29 48 32 51 16 35 54
fx hashmap took 4.909µs:

##########################################################################
benchmarking with 512 elements
#insert
indexmap took 34.266µs:
hashmap took 34.806µs:
std_vec took 1.032µs:
linked-hash-map took 25.117µs:
fx hashmap took 25.319µs:

#iterate
indexmap took 20ns:
vec took 20ns:
hashmap took 791ns:
linked-hashmap took 30ns:
fx hashmap took 591ns:
indexmap (values only) took 30ns:
linked-hashmap (with view) took 30ns:
fx hashmap (values only) took 491ns:

#access
indexmap took 6.933µs:
vec took 66.036µs:
vec (if access by index would be allowed) took 30ns:
hashmap took 6.793µs:
linked-hashmap took 1.422µs:
fx hashmap took 822ns:

#clone
indexmap took 14.568µs - 512
vec took 170ns - 512
hashmap took 7.705µs - 512
linked-hashmap took 39.525µs - 512
fx hashmap took 11.833µs - 512

#clone_from
indexmap took 5.62µs - 512
vec took 120ns - 512
hashmap took 3.326µs - 512
linked-hashmap took 40.718µs - 512
fx hashmap took 4.919µs - 512

#push to back
indexmap took 485.894µs:
vec took 19.106µs:
hashmap unsupported
linked-hashmap took 2.865µs:
fx hashmap unsupported

#remove
order check: 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511
indexmap took 257.67µs:
order check: 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511
vec took 15.139µs:
can't preserve order in hashmap.
hashmap took 10.119µs:
order check: 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511
linked-hashmap took 8.616µs:
order check: 511 468 474 480 486 492 498 504 510 467 473 479 485 491 497 503 509 466 472 478 484 490 496 502 508 465 471 477 483 489 495 501 507 464 470 476 482 488 494 500 506 463 469 475 481 487 493 499 505
fx hashmap took 7.153µs:

##########################################################################
benchmarking with 100000 elements
#insert
indexmap took 4.830842ms:
hashmap took 4.891747ms:
std_vec took 71.846µs:
linked-hash-map took 7.076791ms:
fx hashmap took 2.273111ms:

#iterate
indexmap took 20ns:
vec took 30ns:
hashmap took 104.75µs:
linked-hashmap took 30ns:
fx hashmap took 56.688µs:
indexmap (values only) took 30ns:
linked-hashmap (with view) took 20ns:
fx hashmap (values only) took 58.28µs:

#access
indexmap took 2.614549ms:
vec took 2.396917068s:
vec (if access by index would be allowed) took 30ns:
hashmap took 2.771147ms:
linked-hashmap took 901.483µs:
fx hashmap took 635.487µs:

#clone
indexmap took 564.263µs - 100000
vec took 57.099µs - 100000
hashmap took 296.143µs - 100000
linked-hashmap took 8.274657ms - 100000
fx hashmap took 313.325µs - 100000

#clone_from
indexmap took 963.762µs - 100000
vec took 358.241µs - 100000
hashmap took 258.331µs - 100000
linked-hashmap took 7.059298ms - 100000
fx hashmap took 201.513µs - 100000

#push to back
indexmap took 19.51842945s:
vec took 1.239986066s:
hashmap unsupported
linked-hashmap took 1.379933ms:
fx hashmap unsupported

#remove
order check: 99951 99952 99953 99954 99955 99956 99957 99958 99959 99960 99961 99962 99963 99964 99965 99966 99967 99968 99969 99970 99971 99972 99973 99974 99975 99976 99977 99978 99979 99980 99981 99982 99983 99984 99985 99986 99987 99988 99989 99990 99991 99992 99993 99994 99995 99996 99997 99998 99999
indexmap took 14.377402327s:
order check: 99951 99952 99953 99954 99955 99956 99957 99958 99959 99960 99961 99962 99963 99964 99965 99966 99967 99968 99969 99970 99971 99972 99973 99974 99975 99976 99977 99978 99979 99980 99981 99982 99983 99984 99985 99986 99987 99988 99989 99990 99991 99992 99993 99994 99995 99996 99997 99998 99999
vec took 575.358896ms:
can't preserve order in hashmap.
hashmap took 3.811505ms:
order check: 99951 99952 99953 99954 99955 99956 99957 99958 99959 99960 99961 99962 99963 99964 99965 99966 99967 99968 99969 99970 99971 99972 99973 99974 99975 99976 99977 99978 99979 99980 99981 99982 99983 99984 99985 99986 99987 99988 99989 99990 99991 99992 99993 99994 99995 99996 99997 99998 99999
linked-hashmap took 1.853072ms:
order check: 99978 99965 99952 99993 99980 99967 99954 99995 99982 99969 99956 99997 99984 99971 99958 99999 99986 99973 99960 99988 99975 99962 99990 99977 99964 99951 99992 99979 99966 99953 99994 99981 99968 99955 99996 99983 99970 99957 99998 99985 99972 99959 99987 99974 99961 99989 99976 99963 99991
fx hashmap took 1.384752ms: