Kotlin: MAX PAYNE (BKUG, July 2017)

K
otlin: MA
X
PA
Y
NE
A
rtur D
ryomov, J
uno
L
ab
@arturdryomov

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J
uno
K
otlin
K
otlin
J
uno
W
ell, only sometimes, so no grudge here

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J
uno
R
ider
F
u
ll‑K
ot
lin + R
xJ
av
a fr
om t
he st
art
2 y
ears
K
ot
lin 1
.
1
-
E
A
P
in pr
odu
ct
ion for 6+ mont
hs
K
ot
lin 1
.
2
-
E
A
P r
ight
now
99.9 % cr
as
h‑fr
ee
2 w
eek spr
ints
dev
elop
ers, QA

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J
uno
R
ider
c
l
o
c m
a
i
n
/
k
o
t
l
i
n — 40 K
c
l
o
c t
e
s
t
/
k
o
t
l
i
n — 38 K
c
l
o
c a
n
d
r
o
i
d
T
e
s
t
/
k
o
t
l
i
n — 12 K

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S
tyle

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C
heckstyle and
S
tatic
A
nalysis
S
o yeah, forget about it

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S
pecification mumbo‑jumbo
J
av
a
AST
— A
bstr
act S
y
nt
ax T
r
ee
O
nly J
av
a
PSI
— P
r
ogr
am
S
tru
ctur
e
I
nt
er
face
O
nly IJ
UAST
— U
niv
ers
al
AST
J
av
a and
K
ot
lin
A
ndr
oid
L
int
is
migr
at
ing t
o it!

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C
heckstyle
H
ow
about
not
mapp
ing it t
o
AST
and inst
ead map
it t
o
UAST
(U
niv
ers
al
A
bstr
act S
y
nt
ax T
r
ee)? T
hat w
ay
als
o adding supp
ort
for K
ot
lin, w
hich is
an official t
hing for A
ndr
oid now, can be
supp
ort
ed.
C
hecksty
le w
or
ks
only w
it
h
AST
as w
e dep
end on
ANTLR
and
J
av
a gr
ammar.

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C
heckstyle and
S
tatic
A
nalysis
P
ut your IJ
config into repository
You can somewhat run
IJ
headless
D
etekt works with
PSI
, so take it for a spin

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∞ paths
L
et’s
bu
ild s
omet
hing!
v
a
l g
a
m
e
B
u
i
l
d
e
r = S
t
r
i
n
g
B
u
i
l
d
e
r
(
)
g
a
m
e
B
u
i
l
d
e
r
.
a
p
p
e
n
d
(
"
t
i
c
"
)
g
a
m
e
B
u
i
l
d
e
r
.
a
p
p
e
n
d
(
"
t
a
c
"
)
g
a
m
e
B
u
i
l
d
e
r
.
a
p
p
e
n
d
(
"
t
o
e
"
)
v
a
l g
a
m
e = g
a
m
e
B
u
i
l
d
e
r
.
t
o
S
t
r
i
n
g
(
)

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∞ paths
A
ls
o, a
l
s
o .
v
a
l g
a
m
e
: S
t
r
i
n
g = S
t
r
i
n
g
B
u
i
l
d
e
r
(
)
.
a
l
s
o {
i
t
.
a
p
p
e
n
d
(
"
t
i
c
"
)
i
t
.
a
p
p
e
n
d
(
"
t
a
c
"
)
i
t
.
a
p
p
e
n
d
(
"
t
o
e
"
)
}
.
t
o
S
t
r
i
n
g
(
)

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∞ paths
H
mm, l
e
t
it
be?
v
a
l g
a
m
e
: S
t
r
i
n
g = S
t
r
i
n
g
B
u
i
l
d
e
r
(
)
.
l
e
t {
i
t
.
a
p
p
e
n
d
(
"
t
i
c
"
)
i
t
.
a
p
p
e
n
d
(
"
t
a
c
"
)
i
t
.
a
p
p
e
n
d
(
"
t
o
e
"
)
i
t
.
t
o
S
t
r
i
n
g
(
)
}

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∞ paths
a
p
p
l
y
it!
v
a
l g
a
m
e
: S
t
r
i
n
g = S
t
r
i
n
g
B
u
i
l
d
e
r
(
)
.
a
p
p
l
y {
a
p
p
e
n
d
(
"
t
i
c
"
)
a
p
p
e
n
d
(
"
t
a
c
"
)
a
p
p
e
n
d
(
"
t
o
e
"
)
}
.
t
o
S
t
r
i
n
g
(
)

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∞ paths
r
u
n s
eems
nice.
v
a
l g
a
m
e
: S
t
r
i
n
g = S
t
r
i
n
g
B
u
i
l
d
e
r
(
)
.
r
u
n {
a
p
p
e
n
d
(
"
t
i
c
"
)
a
p
p
e
n
d
(
"
t
a
c
"
)
a
p
p
e
n
d
(
"
t
o
e
"
)
t
o
S
t
r
i
n
g
(
)
}

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∞ paths
H
ow
about w
i
t
h ?
v
a
l g
a
m
e
: S
t
r
i
n
g = w
i
t
h
(
S
t
r
i
n
g
B
u
i
l
d
e
r
(
)
) {
a
p
p
e
n
d
(
"
t
i
c
"
)
a
p
p
e
n
d
(
"
t
a
c
"
)
a
p
p
e
n
d
(
"
t
o
e
"
)
t
o
S
t
r
i
n
g
(
)
}

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∞ paths
B
ett
er
br
ew t
hat
coffee for
long
PR
s
?
: vs. l
e
t vs. i
f (
i
t =
= n
u
l
l
)

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∞ paths
C
O
D
E
_
S
T
Y
L
E
.
m
d
I
t
does
not r
eally
matt
er, just
go w
it
h it

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W
eird
P
arts

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D
estructuring
N
o joke, actu
ally us
efu
l.
v
a
l (
f
i
r
s
t
, s
e
c
o
n
d
) = p
a
i
r
v
a
l (
f
i
r
s
t
, s
e
c
o
n
d
, t
h
i
r
d
) = t
r
i
p
l
e
O
b
s
e
r
v
a
b
l
e
.
f
r
o
m
C
a
l
l
a
b
l
e { c
r
e
a
t
e
P
a
i
r
(
) }
.
s
u
b
s
c
r
i
b
e { (
f
i
r
s
t
, s
e
c
o
n
d
) -
>
p
r
i
n
t
l
n
(
"
1
s
t i
s $
f
i
r
s
t
, 2
n
d i
s $
s
e
c
o
n
d
"
)
}

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D
estructuring
S
upp
orts d
a
t
a c
l
a
s
s
and su
ggest
ed by IJ
.
d
a
t
a c
l
a
s
s P
e
r
s
o
n
(
f
i
r
s
t
N
a
m
e
: S
t
r
i
n
g
,
l
a
s
t
N
a
m
e
: S
t
r
i
n
g
)
v
a
l (
f
i
r
s
t
N
a
m
e
, l
a
s
t
N
a
m
e
) = p
e
r
s
o
n

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D
estructuring
S
omebody sw
aps
fields C
omp
iler
is
happy!
d
a
t
a c
l
a
s
s P
e
r
s
o
n
(
l
a
s
t
N
a
m
e
: S
t
r
i
n
g
,
f
i
r
s
t
N
a
m
e
: S
t
r
i
n
g
)
v
a
l (
f
i
r
s
t
N
a
m
e
, l
a
s
t
N
a
m
e
) = p
e
r
s
o
n

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D
estructuring
W
e just ban it unless P
a
i
r
or T
r
i
p
l
e

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n
u
l
l safety?
T
his w
or
ks
just
fine!
f
u
n c
r
e
a
t
e
O
b
s
e
r
v
a
b
l
e
(
)
: O
b
s
e
r
v
a
b
l
e
<
I
n
t
> {
r
e
t
u
r
n O
b
s
e
r
v
a
b
l
e
.
j
u
s
t
(
n
u
l
l
)
}
OH HAI R
xJ
av
a 2
R
epro
du
ced on RxJ
av
a 2.1.1.

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n
u
l
l safety!!
T
he langu
age r
elies
on @
N
o
n
N
u
l
l
annot
at
ions.
Your
code is
fu
ll of u
nicor
ns
J
av
a code is
fu
ll of n
u
l
l .

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n
u
l
l safety!!
R
ead docs
and s
our
ces
car
efu
lly.
P
r
omot
e @
N
u
l
l
a
b
i
l
i
t
y t
o y
our
fav
or
it
e libr
ar
ies.
H
op
efu
lly A
ndr
oid
SDK
w
ill cat
ch up
aft
er
annou
ncements.

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R
xJ
ava 2
S
tr
eams p
anic on n
u
l
l v
alu
es.
K
ot
lin has t
o be fr
iends w
it
h
J
av
a.
S
ide r
oad — S
w
ift vs. K
ot
lin
S
w
ift: ?
and n
i
l
just su
gar
for e
n
u
m O
p
t
i
o
n
a
l .
K
ot
lin: ?
is
a langu
age help
er, no gu
ar
ant
ees t
hou
gh.

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K
optional
https://github.com/gojuno/koptional
v
a
l s
o
m
e = S
o
m
e
(
v
a
l
u
e
)
v
a
l n
o
n
e = N
o
n
e
v
a
l o
p
t
i
o
n
a
l = n
u
l
l
a
b
l
e
V
a
l
u
e
.
t
o
O
p
t
i
o
n
a
l
(
)
v
a
l n
u
l
l
a
b
l
e = o
.
t
o
N
u
l
l
a
b
l
e
(
)
v
a
l v
a
l
u
e
S
t
r
e
a
m = o
p
t
i
o
n
a
l
S
t
r
e
a
m
.
f
i
l
t
e
r
S
o
m
e
(
)
v
a
l s
i
g
n
a
l
S
t
r
e
a
m = o
p
t
i
o
n
a
l
S
t
r
e
a
m
.
f
i
l
t
e
r
N
o
n
e
(
)
U
s
e ?
:
and l
e
t — embr
ace t
he langu
age.

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SAM C
onversion
Singl
e A
bstr
act M
etho
d
/
/ R
x
J
a
v
a 1
O
b
s
e
r
v
a
b
l
e
.
z
i
p
(
a
, b
) { a
, b -
> a t
o b
}
/
/ R
x
J
a
v
a 2
O
b
s
e
r
v
a
b
l
e
.
z
i
p
(
a
, b
, B
i
F
u
n
c
t
i
o
n
<
I
n
t
, I
n
t
> { a
, b -
>
a t
o b
}
)

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SAM C
onversion
/
/ R
x
J
a
v
a 1
p
u
b
l
i
c s
t
a
t
i
c <
T
1
, T
2
, R
> O
b
s
e
r
v
a
b
l
e
<
R
> z
i
p
(
O
b
s
e
r
v
a
b
l
e
<
T
1
> o
1
, O
b
s
e
r
v
a
b
l
e
<
T
2
> o
2
,
F
u
n
c
2
<
T
1
, T
2
, R
> z
i
p
p
e
r
)
/
/ R
x
J
a
v
a 2
p
u
b
l
i
c s
t
a
t
i
c <
T
1
, T
2
, R
> O
b
s
e
r
v
a
b
l
e
<
R
> z
i
p
(
O
b
s
e
r
v
a
b
l
e
S
o
u
r
c
e
<
T
1
> o
1
, O
b
s
e
r
v
a
b
l
e
S
o
u
r
c
e
<
T
2
> o
2
,
B
i
F
u
n
c
t
i
o
n
<
T
1
, T
2
, R
> z
i
p
p
e
r
)

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SAM C
onversion
/
/ R
x
J
a
v
a 1
p
u
b
l
i
c i
n
t
e
r
f
a
c
e F
u
n
c
2
<
T
1
, T
2
, R
> e
x
t
e
n
d
s F
u
n
c
t
i
o
n {
R c
a
l
l
(
T
1 t
1
, T
2 t
2
)
;
}
/
/ R
x
J
a
v
a 2
p
u
b
l
i
c i
n
t
e
r
f
a
c
e B
i
F
u
n
c
t
i
o
n
<
T
1
, T
2
, R
> {
R a
p
p
l
y
(
T
1 t
1
, T
2 t
2
)
;
}

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SAM C
onversion
/
/ R
x
J
a
v
a 1
p
u
b
l
i
c c
l
a
s
s O
b
s
e
r
v
a
b
l
e
<
T
> {
/
/ R
e
d
a
c
t
e
d
}
/
/ R
x
J
a
v
a 2
p
u
b
l
i
c i
n
t
e
r
f
a
c
e O
b
s
e
r
v
a
b
l
e
S
o
u
r
c
e
<
T
> {
v
o
i
d s
u
b
s
c
r
i
b
e
(
O
b
s
e
r
v
e
r
<
T
> o
b
s
e
r
v
e
r
)
;
}

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SAM C
onversion
https://youtrack.jetbrains.com/issue/KT
‑14984
Impossible to pass not all SAM
argument as function

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SAM C
onversion
W
e’ve made a bunch of extensions for now
R
xK
otlin has some

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G
son and
R
eflection
d
a
t
a c
l
a
s
s M
o
d
e
l {
@
S
e
r
i
a
l
i
z
e
d
N
a
m
e
(
"
m
o
d
e
l
_
f
i
e
l
d
"
)
v
a
l f
i
e
l
d
: S
t
r
i
n
g
}
m
o
d
e
l
.
f
i
e
l
d
.
t
o
S
t
r
i
n
g
(
) /
/ C
r
a
s
h
!

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G
son and
R
eflection
G
son is happy to write n
u
l
l to properties
R
eflection is a thing in the
J
ava world...

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G
son and
R
eflection
F
ail fast
d
a
t
a c
l
a
s
s M
o
d
e
l {
@
S
e
r
i
a
l
i
z
e
d
N
a
m
e
(
"
m
o
d
e
l
_
f
i
e
l
d
"
)
v
a
l f
i
e
l
d
: S
t
r
i
n
g
} : V
a
l
i
d
a
t
a
b
l
e {
o
v
e
r
r
i
d
e f
u
n v
a
l
i
d
a
t
e
(
) {
i
f (
f
i
e
l
d =
= n
u
l
l
) t
h
r
o
w P
a
r
s
e
E
x
c
e
p
t
i
o
n
(
)
}
}

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G
son and
R
eflection
T
ake a look at M
oshi or J
ackson
U
ses K
otlin native reflection

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O
ptimizations

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i
n
l
i
n
e
or n
o
i
n
l
i
n
e
N
eat, r
edu
ces
met
hods
cou
nt.
OH HAI A
ndr
oid
F
eels
like ker
nel dev
elop
ment.
N
ot
emr
aced at
all.
M
ost
ly
for
ces @
S
u
p
p
r
e
s
s
(
"
n
o
t
h
i
n
g
_
t
o
_
i
n
l
i
n
e
"
) .

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i
n
l
i
n
e
or n
o
i
n
l
i
n
e
‑16769
R
evisit compiler and IDE warning about inline functions

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i
n
l
i
n
e
or n
o
i
n
l
i
n
e
K
now about it
I
’m looking at you, p
r
i
v
a
t
e f
u
n

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c
o
m
p
a
n
i
o
n o
b
j
e
c
t
and c
o
n
s
t
/
/ K
o
t
l
i
n
c
o
m
p
a
n
i
o
n o
b
j
e
c
t {
p
r
i
v
a
t
e v
a
l N
U
M
B
E
R = 4
2
}
/
/ J
a
v
a
p
u
b
l
i
c s
t
a
t
i
c f
i
n
a
l c
l
a
s
s C
o
m
p
a
n
i
o
n {
p
r
i
v
a
t
e f
i
n
a
l i
n
t N
U
M
B
E
R = 4
2
;
p
r
i
v
a
t
e f
i
n
a
l i
n
t g
e
t
N
U
M
B
E
R
(
) {
r
e
t
u
r
n N
U
M
B
E
R
;
}
}

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c
o
m
p
a
n
i
o
n o
b
j
e
c
t
and c
o
n
s
t
S
o y
eah, + met
hod w
it
hout c
o
n
s
t .
M
et
hods w
ill not
cou
nt t
hems
elv
es!
I
nv
ocat
ion costs
ar
e r
eal

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c
o
m
p
a
n
i
o
n o
b
j
e
c
t
and c
o
n
s
t
/
/ K
o
t
l
i
n
c
o
m
p
a
n
i
o
n o
b
j
e
c
t {
p
r
i
v
a
t
e c
o
n
s
t v
a
l N
U
M
B
E
R = 4
2
}
/
/ J
a
v
a
p
u
b
l
i
c s
t
a
t
i
c f
i
n
a
l c
l
a
s
s C
o
m
p
a
n
i
o
n {
p
r
i
v
a
t
e s
t
a
t
i
c f
i
n
a
l i
n
t N
U
M
B
E
R = 4
2
;
/
/ W
i
l
l a
c
t
u
a
l
l
y i
n
l
i
n
e t
h
e v
a
l
u
e
.
}

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c
o
m
p
a
n
i
o
n o
b
j
e
c
t
and c
o
n
s
t
N
ot
adv
ocat
ed enou
gh.
O
nly pr
imit
iv
es
and S
t
r
i
n
g .
S
hou
ldn’t
comp
iler
do it
its
elf?

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c
o
m
p
a
n
i
o
n o
b
j
e
c
t
and c
o
n
s
t
K
now about it

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H
idden
C
osts
IJ
→ T
ools → S
how K
otlin
B
ytecode
L
ots of fun, also — scary!

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T
ooling

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B
ugs
f
u
n m
u
l
t
i
p
l
y
(
d
o
u
b
l
e
: D
o
u
b
l
e
) = d
o
u
b
l
e * d
o
u
b
l
e
U
p
dat
e
K
ot
lin 1.1.2 1.1.3.
j
a
v
a
.
l
a
n
g
.
I
l
l
e
g
a
l
S
t
a
t
e
E
x
c
e
p
t
i
o
n
o
r
g
.
j
e
t
b
r
a
i
n
s
.
k
o
t
l
i
n
.
k
a
p
t
3
.
d
i
a
g
n
o
s
t
i
c
.
K
a
p
t
E
r
r
o
r
E
r
r
o
r w
h
i
l
e a
n
n
o
t
a
t
i
o
n p
r
o
c
e
s
s
i
n
g
J
av
a keyw
or
ds
ar
e su
ddenly
banned.
Ch
ang
elog?
Wh
at
ch
ang
elog?

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B
ugs
‑18377
Syntax error while generating kapt stubs

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B
ugs
B
ugs in the language tooling are a thing

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A
ssemble
C
oming fr
om
J
av
a? + bu
ild st
ep.
U
s
e
D
agger? + bu
ild st
ep.
k
a
p
t
incr
ement
al comp
ilat
ion didn’t w
or
k for
a long t
ime...
H
av
e a change? R
E
B
U
I
L
D .
J
ust r
emember y
ou
ar
e doing it t
imes p
er
day.

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A
ssemble
C
omp
ilat
ion is CPU
int
ens
iv
e.
L
apt
ops
hav
e mobile
CPU
s.
PC
s
ar
e cheap, easy t
o up
gr
ade...

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M
ainframer
https://github.com/gojuno/mainframer
https://github.com/elpassion/mainframer‑intellij‑plugin
1. L
apt
op → Sour
ce Co
de → B
u
ild
M
achine.
2. B
u
ild
M
achine → Buil
d R
esults → L
apt
op.

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M
ainframer
$ .
/
g
r
a
d
l
e
w c
l
e
a
n a
s
s
e
m
b
l
e
D
e
b
u
g -
-
n
o
-
d
a
e
m
o
n
W
it
hout MF
: 4 minut
es 10 s
econds.
L
apt
op
ov
er
heat
B
as
ically
cannot us
e y
our
comput
er
W
it
h
MF
: 1 minut
e 10 s
econds.

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A
ssemble
D
o all optimizations you can
M
inimu
m
SDK
t
o
L
ollip
op.
G
r
adle bu
ild cache.
G
r
adle
A
ndr
oid
P
lu
gin
DE
X bu
ild cache.
M
ainfr
amer

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S
pek

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S
pek
@
R
u
n
W
i
t
h
(
J
U
n
i
t
P
l
a
t
f
o
r
m
:
:
c
l
a
s
s
)
c
l
a
s
s S
p
e
c : S
p
e
k
(
{
v
a
l s
y
s
t
e
m b
y m
e
m
o
i
z
e
d { S
y
s
t
e
m
(
) }
c
o
n
t
e
x
t
(
"
b
o
o
t
"
) {
b
e
f
o
r
e
E
a
c
h
T
e
s
t {
s
y
s
t
e
m
.
b
o
o
t
(
)
}
i
t
(
"
r
e
p
o
r
t
s b
o
o
t s
t
a
t
u
s
"
) {
a
s
s
e
r
t
T
h
a
t
(
s
y
s
t
e
m
.
s
t
a
t
u
s
(
)
)
.
i
s
E
q
u
a
l
T
o
(
B
O
O
T
E
D
)
}
}
}
)

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S
pek: versions
1
.
0
.
8
9
D
e
s
c
r
i
b
e
B
o
d
y → D
s
l
1
.
1
.
0
-
b
e
t
a
3
D
s
l → S
p
e
c
B
o
d
y
D
ocs
ment
ion 1
.
0 , 1
.
1
.
1
9 .
D
o not
ex
ist.
M
ov
ed fr
om
JU
nit 4 t
o
JU
nit 5 at s
ome p
oint

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S
pek: versions
https://github.com/J
etB
rains/spek/issues/170
Please fix Spek versioning,
compatibility and
publishing

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S
pek: m
e
m
o
i
z
e
d
caching
@
R
u
n
W
i
t
h
(
J
U
n
i
t
P
l
a
t
f
o
r
m
:
:
c
l
a
s
s
)
c
l
a
s
s O
o
p
s
S
p
e
c : S
p
e
k
(
{
v
a
l s
y
s
t
e
m b
y m
e
m
o
i
z
e
d { S
y
s
t
e
m
(
) }
l
i
s
t
O
f
(
1
, 2
, 3
)
.
f
o
r
E
a
c
h { i
n
d
e
x -
>
c
o
n
t
e
x
t
(
"
b
o
o
t
"
) {
i
t
(
"
b
o
o
t
s
"
) {
}
}
}
}
S
ame s
y
s
t
e
m
object
for
each ru
n

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S
pek: m
e
m
o
i
z
e
d
caching
@
R
u
n
W
i
t
h
(
J
U
n
i
t
P
l
a
t
f
o
r
m
:
:
c
l
a
s
s
)
c
l
a
s
s O
k
S
p
e
c : S
p
e
k
(
{
v
a
l s
y
s
t
e
m b
y m
e
m
o
i
z
e
d { S
y
s
t
e
m
(
) }
l
i
s
t
O
f
(
1
, 2
, 3
)
.
f
o
r
E
a
c
h { i
n
d
e
x -
>
c
o
n
t
e
x
t
(
"
b
o
o
t $
i
n
d
e
x
"
) {
i
t
(
"
b
o
o
t
s
"
) {
}
}
}
}
U
niqu
e s
y
s
t
e
m
object
for
each ru
n

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S
pek: m
e
m
o
i
z
e
d
caching
etB
M
emoized and same test names

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S
pek: m
e
m
o
i
z
e
d
before and after
@
R
u
n
W
i
t
h
(
J
U
n
i
t
P
l
a
t
f
o
r
m
:
:
c
l
a
s
s
)
c
l
a
s
s J
u
s
t
S
p
e
c : S
p
e
k
(
{
v
a
l s
y
s
t
e
m b
y m
e
m
o
i
z
e
d { S
y
s
t
e
m
(
) }
b
e
f
o
r
e
E
a
c
h
T
e
s
t {
p
r
i
n
t
l
n
(
"
b
e
f
o
r
e $
s
y
s
t
e
m
"
)
}
a
f
t
e
r
E
a
c
h
T
e
s
t {
p
r
i
n
t
l
n
(
"
a
f
t
e
r $
s
y
s
t
e
m
"
)
}
}
)
B
efor
e and aft
er s
y
s
t
e
m
ar
e differ
ent.

View Slide

S
pek: m
e
m
o
i
z
e
d
before and after
etB
M
emoized value is not the same before and after test

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S
pek: JU
nit
A
ctu
ally JU
nit 5 fr
om now
on.
U
s
e @
R
u
n
W
i
t
h
(
J
U
n
i
t
P
l
a
t
f
o
r
m
:
:
c
l
a
s
s
) t
o w
or
k w
it
h
JU
nit 4.
JU
nit 5 is
not r
eleas
ed, s
o
IJ
may
not w
or
k.
OH HAI An
droi
d Stu
dio 3 B
et
a.
f
o
n
and f
i
t w
er
e r
emov
ed, us
e
S
p
ek
IJ
p
lu
gin.
Do
es not work with J
Unit 4.
T
his
is
fu
n

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S
pek
K
ind of adv
ert
iz
ed by J
etB
r
ains, but...
C
ommits
ar
e tw
o t
imes
a mont
h on av
er
age
B
r
eaks
comp
at
ibility
eas
ily
D
ocs
feel out
dat
ed all t
he t
ime.
T
her
e ar
e bu
gs. R
emember v
anilla
JU
nit st
ability?
A
ls
o, hav
e 100 K
t
ests? H
av
e t
o maint
ain it

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B
onus round

View Slide

B
onus round
You are on your own
P
repare that YouT
rack account...

View Slide

B
onus round
...
K
ot
lin is v
ery r
efer
ence s
emant
ics, it’s
a t
hin lay
er
on t
op
of
J
av
a,
and s
o it p
erp
etu
at
es t
hr
ou
gh a lot
of t
he
J
av
ais
ms
in its
model.
...
I
f w
e had done an analog t
o t
hat
for O
bject
iv
e‑C
it w
ou
ld be like,
ev
eryt
hing is
an
NSO
bject
and it’s
objc_ms
g
S
end ev
eryw
her
e,
just w
it
h p
ar
ent
hes
es
inst
ead of squ
ar
e br
ackets.
...
Chris L
attn
er, Swift

View Slide

B
onus round
J
av
a: O
r
acle, R
ed
H
at, I
nt
el, IBM
, E
clips
e, T
w
itt
er, J
etB
r
ains, et
c.
K
ot
lin: J
etB
r
ains.
T
his
is
fine actu
ally, but
do not
exp
ect
a mir
acle.
F
or
a s
ingle comp
any
a damn gr
eat
langu
age

View Slide

C
onclusion
T
her
e w
ill be dr
agons
K
ot
lin w
ill not
make y
ou
a bett
er
dev
elop
er.
I
t w
ill giv
e y
ou t
ools t
hou
gh
R
emember
about J
av
a u
nder
neat
h.
S
w
ift
can br
eak t
hings, K
ot
lin cannot
T
he langu
age is t
op‑not
ch and w
ell‑des
igned.
B
e car
efu
l!

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Kotlin: MAX PAYNE (BKUG, July 2017)

Kotlin: MAX PAYNE (BKUG, July 2017)

Artur Dryomov

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