Slide 1
Slide 1 text
ɹ!shin1x1
2016/05/21 1)1ΧϯϑΝϨϯεԬ
੍ͰίʔυʹடংΛ
Slide 2
Slide 2 text
੍ͱ
Slide 3
Slide 3 text
੍ݶ݅Λ͚ͭͯ
ࣗ༝ʹ׆ಈͤ͞ͳ͍͜ͱ
https://kotobank.jp/word/%E5%88%B6%E7%B4%84-546519
Slide 4
Slide 4 text
੍ݶ݅Λ͚ͭͯ
ࣗ༝ʹ׆ಈͤ͞ͳ͍͜ͱ
https://kotobank.jp/word/%E5%88%B6%E7%B4%84-546519
Slide 5
Slide 5 text
ࠓͷࡐ
Slide 6
Slide 6 text
&$αΠτ
γϣοϐϯάΧʔτ
Slide 7
Slide 7 text
ΧʔτʹՃ
Slide 8
Slide 8 text
ΧʔτΛදࣔ
Slide 9
Slide 9 text
ΧʔτʹΛՃ
Slide 10
Slide 10 text
D
.BTBTIJ4IJOCBSB!TIJOY
ΧʔτʹΛՃ
wΧʔτ$BSUΫϥε
w*UFNΫϥε
w$BSUJUFNTʹΛՃ
Slide 11
Slide 11 text
*UFN
class Item
{
public $code;
public $price;
public function __construct(string $code, int $price)
{
$this->code = $code;
$this->price = $price;
}
}
Slide 12
Slide 12 text
$BSU
class Cart
{
public $items;
public function __construct()
{
$this->items = [];
}
public function calculateTotalPrice(): int
{
$totalPrice = 0;
foreach ($this->items as $item) {
$totalPrice = $totalPrice + $item->price;
}
return $totalPrice;
}
}
Slide 13
Slide 13 text
D
.BTBTIJ4IJOCBSB!TIJOY
ՃΛ*UFNΫϥεʹݶఆ
w$BSUJUFNTΛQSJWBUFͰӅ͢
wBEE*UFNϝιουΛՃ
wλΠϓώϯςΟϯάͰ*UFNΫϥεʹݶఆ
Slide 14
Slide 14 text
$BSU
class Cart
{
private $items;
public function __construct()
{
$this->items = [];
}
public function addItem(Item $item)
{
$this->items[] = $item;
}
(snip)
}
QSJWBUF
λΠϓώϯςΟϯά
Slide 15
Slide 15 text
D
.BTBTIJ4IJOCBSB!TIJOY
ΞΫηεम০ࢠλΠϓώϯςΟϯά
wΫϥε͕ࣗϓϩύςΟΛίϯτϩʔϧ
wΫϥε֎ʹίϯτϩʔϧΛ͞ͳ͍
wૢ࡞ํ๏Λݶఆ͍ͯ͠Δ͔Βͦ͜
ίϯτϩʔϧͰ͖Δ
ʢλΠϓώϯςΟϯάͳͲʣ
Slide 16
Slide 16 text
Χʔτͷ
·Ͱ
Slide 17
Slide 17 text
D
.BTBTIJ4IJOCBSB!TIJOY
ΧʔτͷҎ
wҎ্ͷΛ֨ೲ͠Α͏ͱͨ͠Βྫ֎ൃੜ
wՃͷࡍʹνΣοΫΛߦ͏
Slide 18
Slide 18 text
D
.BTBTIJ4IJOCBSB!TIJOY
BEE*UFNϝιουͰ੍
wBEE*UFNϝιουͰΛνΣοΫ
w͜ͷϝιουͰ͔͠$BSUJUFNTΛ
มߋͰ͖ͳ͍ͷͰ༗ޮ
wϓϩύςΟͷίϯτϩʔϧΛΫϥε͕ࣗߦ͏
QVCMJDͩͱ֎෦ʹίϯτϩʔϧ͞ΕΔ
Slide 19
Slide 19 text
$BSU
class Cart
{
(snip)
public function addItem(Item $item)
{
if (count($this->items) >= 3) {
throw new PreconditionException();
}
$this->items[] = $item;
}
(snip)
}
Slide 20
Slide 20 text
খܭʹ
ফඅ੫ΛՃࢉ
Slide 21
Slide 21 text
D
.BTBTIJ4IJOCBSB!TIJOY
੫ࠐՁ֨ࢉग़
wΧʔτͷͦΕͧΕʹফඅ੫ΛՃࢉ
w੫ࠐΈՁ֨ͷ߹ܭΛখܭՁ֨ͱ͢Δ
Slide 22
Slide 22 text
$BSU
$cart = new Cart();
$item1 = new Item('code1', 100);
$cart->addItem($item1);
$item2 = new Item('code2', 200);
$cart->addItem($item2);
$this->assertEquals(324, $cart->calculateTotalPrice());
$this->assertEquals(324, $cart->calculateTotalPrice());
ʹͳΔʁʁʁ
Slide 23
Slide 23 text
$BSU
class Cart
{
(snip)
public function calculateTotalPrice(): int
{
$totalPrice = 0;
foreach ($this->items as $item) {
$item->price = (int)($item->price * 1.08);
$totalPrice = $totalPrice + $item->price;
}
return $totalPrice;
}
(snip)
}
*UFNQSJDF͕
มߋ͞ΕΔ
ճݺͿͱ
͞ΒʹഒʹͳΔ
Slide 24
Slide 24 text
D
.BTBTIJ4IJOCBSB!TIJOY
*UFNΫϥεΛෆมʹ͢Δ
wશίϯετϥΫλ
ίϯετϥΫλͰશͯͷΛ༩͑Δ
wෆมʢΠϛϡʔλϒϧʣΫϥε
QSJDF
ৗʹಉ͡Λฦ͢
wඞཁͳHFUUFSͷΈ࣮
Slide 25
Slide 25 text
*UFN
class Item
{
private $code;
private $price;
public function __construct(string $code, int $price)
{
$this->code = $code;
$this->price = $price;
}
public function price(): int
{
return $this->price;
}
}
QSJWBUF
Slide 26
Slide 26 text
$BSU
class Cart
{
(snip)
public function calculateTotalPrice(): int
{
$totalPrice = 0;
foreach ($this->items as $item) {
$price = (int)($item->price() * 1.08);
$totalPrice = $totalPrice + $price;
}
return $totalPrice;
}
(snip)
}
*UFNQSJDF
มߋͰ͖ͳ͍
Slide 27
Slide 27 text
Ձ֨ͷૢ࡞Λݶఆ
Slide 28
Slide 28 text
D
.BTBTIJ4IJOCBSB!TIJOY
Ձ֨ͷԋࢉΛ੍ݶ
wJOUͩͱҙຯ͕͗͢ΔʢՄೳͳԋࢉଟ͍ʣ
w͠ࢉͱ੫ࠐՁ֨ܭࢉʢֻ͚ࢉͰͳ͍ʣͷΈ
wՁ֨Λ1SJDFΫϥεͰදݱ
Slide 29
Slide 29 text
1SJDF
class Price
{
const TAX_RATE = 1.08;
private $price;
public function __construct(int $price)
{
$this->price = $price;
}
public function add(self $price): self
{
return new self($this->price + $price->price);
}
public function withTax(): self
{
return new self((int)($this->price * static::TAX_RATE));
}
public function toInt(): int
{
return $this->price;
}
}
Slide 30
Slide 30 text
*UFN
class Item
{
private $code;
private $price;
public function __construct(string $code, int $price)
{
$this->code = $code;
$this->price = new Price($price);
}
public function price(): Price
{
return $this->price;
}
}
Slide 31
Slide 31 text
$BSU
class Cart
{
(snip)
public function calculateTotalPrice(): Price
{
$totalPrice = new Price(0);
foreach ($this->items as $item) {
$price = $item->price()->withTax();
$totalPrice = $totalPrice->add($price);
}
return $totalPrice;
}
(snip)
}
Ձ֨1SJDFͰදݱ
੫ࠐՁ֨ࢉग़
Ձ֨ͷ͠ࢉ
Slide 32
Slide 32 text
D
.BTBTIJ4IJOCBSB!TIJOY
7BMVF0CKFDU
wΛΫϥεͰදݱ
wෆมΫϥε
ԋࢉ݁Ռ৽͍͠ΠϯελϯεͰฦ͢
wඞཁͳԋࢉͷΈΛ࣮
w෦ͷΛӅณ
Slide 33
Slide 33 text
ɺΧʔτใΛ
+40/Ͱग़ྗ
Slide 34
Slide 34 text
D
.BTBTIJ4IJOCBSB!TIJOY
ɺΧʔτใΛ+40/Ͱग़ྗ
w+BWB4DSJQUΫϥΠΞϯτ
εϚʔτϑΥϯΞϓϦ࿈ܞ
w*UFNUP"SSBZ
Ͱྻͱͯ͠ग़ྗ
wKTPO@FODPEF
Ͱ+40/ʹ͢Δ
Slide 35
Slide 35 text
"QJ$POUSPMMFS
class ApiController
{
public function item()
{
$item = new Item('code1', 100);
$this->json($item);
}
private function json(Item $entity)
{
header('Content-Type: application/json');
echo json_encode($entity->toArray());
}
}
Slide 36
Slide 36 text
class ApiController
{
public function item()
{
$item = new Item('code1', 100);
$this->json($item);
}
public function cart()
{
$cart = new Cart();
$cart->addItem(new Item('code1', 100));
$cart->addItem(new Item('code2', 200));
$this->json($cart);
}
private function json(Item $entity)
{
header('Content-Type: application/json');
echo json_encode($entity->toArray());
}
}
DBSU
*UFNΫϥεͰͳ͍
Slide 37
Slide 37 text
D
.BTBTIJ4IJOCBSB!TIJOY
"SSBZBCMFΠϯλʔϑΣΠε
w"QJ$POUSPMMFSKTPO
͕
ඞཁͳґଘΛΠϯλʔϑΣΠεͰ໌ࣔ
wΠϯλʔϑΣΠε࣮͍͑ͯ͞͠Ε
ͲΜͳΫϥεͰྑ͍
w༷ͱ࣮ͷ
Slide 38
Slide 38 text
"SSBZBCMF
interface Arrayable
{
public function toArray(): array;
}
Slide 39
Slide 39 text
*UFN
class Item implements Arrayable
{
(snip)
public function toArray(): array
{
return [
'code' => $this->code,
'price' => $this->price->toInt(),
];
}
}
Slide 40
Slide 40 text
$BSU
class Cart implements Arrayable
{
(snip)
public function toArray(): array
{
return array_map(function (Item $item) {
return $item->toArray();
}, $this->items);
}
}
Slide 41
Slide 41 text
class ApiController
{
public function item()
{
$item = new Item('code1', 100);
$this->json($item);
}
public function cart()
{
$cart = new Cart();
$cart->addItem(new Item('code1', 100));
$cart->addItem(new Item('code2', 200));
$this->json($cart);
}
private function json(Arryable $entity)
{
header('Content-Type: application/json');
echo json_encode($entity->toArray());
}
}
"SSBZBCMF
Slide 42
Slide 42 text
D
.BTBTIJ4IJOCBSB!TIJOY
˞ิ
1)1ʹɺ+TPO4FSJBMJ[BCMFͱ͍͏
ΠϯλʔϑΣΠε͕͋Γ·͢ɻ
ΦϒδΣΫτΛ+40/Խ͢Δࡍ
ࢀߟʹ͍ͯͩ͘͠͞ɻ
http://php.net/manual/ja/class.jsonserializable.php
Slide 43
Slide 43 text
੍ͱ
Slide 44
Slide 44 text
ࣗ༝Λୣ͏
໘ͳͷͰͳ͘
Slide 45
Slide 45 text
டংΛकΓ
ҙਤΛ໌֬ʹ͢Δͷ
੍
ΘΜͺ͘ͳίʔυ
https://flic.kr/p/4e5ggf
ίʔυͷடংΛ
कΔͷ
Slide 46
Slide 46 text
੍Ͱடং͋Δ։ൃΛʂ
Slide 47
Slide 47 text
D
.BTBTIJ4IJOCBSB!TIJOY
!TIJOY
!TIJOY
D
.BTBTIJ4IJOCBSB!TIJOY
Slide 48
Slide 48 text
D
.BTBTIJ4IJOCBSB!TIJOY
QSPUFDUFEPSQSJWBUF
w·ͣɺQSJWBUFඞཁͳΒQSPUFDUFE
w͍͔ͭݺΕΔ͔͠Εͳ͍͔ΒQSPUFDUFE
:"(/*ʢ:PVBJOUHPOOBOFFEJUʣ
wଞਓ͕࡞ͬͨγεςϜΛϝϯςφϯε͢Δͱ
QSJWBUFສࡀʹͳΔ
wUSBJU͕͋ΔͷͰɺػೳͷͨΊʹܧঝ͢Δඞཁ͕ແ͍