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1)1FS,BJHJCZ!XFC
݅ఆʹ໊લɺ͚ͭͯ·͔͢ʁ
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w 1)1FSྺɾ໊ݹࡏॅྺɾ݄͔Β
౦ژʹॅΈ·͢
w ʙϑϦʔϥϯεडୗ։ൃ
w ࣗࣾαʔϏεاۀʹब৬
w స৬ΛܦͯɺݱࡏʢגʣϑϡʔδϣϯζΤ
ϯδχΞϦϯάϚωʔδϟʔʢ෦Լͳ͠ɾ
QMBZJOHʣ
w +BWBͰܦӦཧιϑτΛ࡞͍ͬͯ·͢ɻ
4BB4ఏڙ͢ΔͨΊͷཧγεςϜ1)1
Ͱ࡞ͬͯ·͢
w ຊ4ZNGPOZϢʔβʔձ
/BHPZBQIQ
XFCʢͳͳ͏͐Ϳʣ
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ࣗݾհͷ༨ஊϞμϯ1)1FSҙ֎ͱ+BWBΕΔͧ
w DMBTT
JOUFSGBDFΦϒδΣΫτࢦͷओཁ֓೦͕΄΅ಉ͡
w 1IQ4UPSNΛ*OUFMMJ+*%&"ʹม͑Δ͚ͩ
w 1)16OJUΛ+6OJUʹม͑Δ͚ͩ
w 9%FCVHΛ*OUFMMJ+*%&"ͷ+BWBσόοΨʹม͑Δ͚ͩ
w WBS@EVNQແ͍😢
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͓͠ͳ͕͖
w ࣗݾհ✅
w ໊͚Δͱ͍͏͜ͱ
w 1)1Ͱ݅ذʹ໊͚ΔʢϨϕϧʙϨϕϧʣ
w ·ͱΊ
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໊͚Δͱ͍͏͜ͱ
w #PTXFMM
%
'PVDIFS
5
ʰϦʔμϒϧί
ʔυʕΑΓྑ͍ίʔυΛॻͨ͘ΊͷγϯϓϧͰ࣮ફత
ͳςΫχοΫʱ ֯య༁
ΦϥΠϦʔɾδϟύϯ
w ͏ྩ͔ͩΒΈΜͳ࣮ફͯ͠ΔʜΑͶʁ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
IUUQTDVMBHFHJUIVCJP*OHSFTT*OGPHMZQIIUNM
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
IUUQTDVMBHFHJUIVCJP*OHSFTT*OGPHMZQIIUNM
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
IUUQTDVMBHFHJUIVCJP*OHSFTT*OGPHMZQIIUNM
ʮࣝʯ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
IUUQTDVMBHFHJUIVCJP*OHSFTT*OGPHMZQIIUNM
ʮࣝʯ
ʮӕʯ ʮةݥʯ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
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໊͚Δͱ͍͏͜ͱʢXPSLʣ
w ໊લͳ͠ͷ࠷ॳͷਤܗͷ͜ͱɺ͍֮͑ͯ·͔͢ʁ
w ໊લ͋Γͷೋճͷਤܗͷ͜ͱɺ͍֮͑ͯ·͔͢ʁ
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݅ذʹ໊͚Δ
w ීஈ͔ΒมɾؔɾΫϥε͏໊͚͍ͯ·͢ͶʁʢϦʔμϒϧίʔυʣ
w JGจͷલޙʹίϝϯτΛॻ͘ͷͰͳ͍ํ๏͋Δʁ
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݅ذʹ໊͚Δʢ໊͚ͳ͍ʣ
if ($user->getAge() >= 20) {
// you can drink some alcohol
}
if ($user->getAge() >= 20) {
// you can vote
}
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݅ذʹ໊͚Δʢ໊͚ͳ͍ʣ
if ($user->getAge() >= 20) {
// you can drink some alcohol
}
if ($user->getAge() >= 20) {
// you can vote
} ͬͪ͜ͷҙຯͷ͚ͭͩ࿙Εͳ͘
ؒҧ͍ͳ͘୳ͤΔʁ
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݅ذʹ໊͚ΔʢϨϕϧʣ
$canDrink = $user->getAge() >= 20;
if ($canDrink) {
// you can drink some alcohol
}
$canVote = $user->getAge() >= 20;
if ($canVote) {
// you can vote
}
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݅ذʹ໊͚ΔʢϨϕϧʣ
$canDrink = $user->getAge() >= 20;
if ($canDrink) {
// you can drink some alcohol
}
$canVote = $user->getAge() >= 20;
if ($canVote) {
// you can vote
}
Ͳ͔͜ͷϑΝΠϧ͚ͩ
JT7PUFͱ͔DBO5PIZPͱ͔ॻ͍
ͯͳ͍ʁ
ɹ݅ذʹ໊͚Δ͕ςʔ
ϚͳͷͰ705"#-&@"(&ఆΛ
ஔ͘ઃܭʹ͠ͳ͍
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݅ذʹ໊͚ΔʢϨϕϧʣ
if ($user->canDrink()) {
// you can drink some alcohol
}
if ($user->canVote()) {
// you can vote
}
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݅ذʹ໊͚ΔʢϨϕϧʣ
if ($user->canDrink()) {
// you can drink some alcohol
}
if ($user->canVote()) {
// you can vote
}
6TFSͷछྨ͕ͨ͘͞Μ͋ͬͨΒʁ͕݅
ʮྸࡀҎ্ʯΑΓෳࡶͩͬͨΒʁޙ
ʹ࠶ൃͯ͠͏Ұճಉ͜͡ͱΕΔʁ
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݅ذʹ໊͚ΔʢϨϕϧʣ
class DrinkableSpecification {
public function isSatisfiedBy(int $age): bool
{
return $age >= 20;
}
}
class VotableSpecification {
public function isSatisfiedBy(int $age): bool
{
return $age >= 20;
}
}
IUUQTNBSUJOGPXMFSDPNBQTVQQTQFDQEG
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݅ذʹ໊͚ΔʢϨϕϧʣ
if ($drinkableSpecification->isSatisfiedBy($user->getAge())) {
// you can drink some alcohol
}
if ($votableSpecification->isSatisfiedBy($user->getAge())) {
// you can vote
}
IUUQTNBSUJOGPXMFSDPNBQTVQQTQFDQEG
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ʢ͓·͚ʣ9ͰʢͩͬͨʣΞϨ
JT4VDDFTT
IUUQTYDPNNBOFLJOFDPUTUBUVT
w JGจͱFMTFͷͳͷͰएׯP
ff
UPQJD
w JT4VDDFTTʮΧϯτ૿ͤ
ΔʯͱʮϥΠϑݮΒͤͳ͍ʯΛ
·ͱΊͪΌ͍ͬͯΔ
w %SJOLBCMFͱ7PUBCMFΛJT"EVMU
Ͱ·ͱΊ࣮ͯͪ͠Όͬͯͨ
తͳͭ
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·ͱΊ
w ͳΜͰ໊͚Δͱخ͍͠ɺ݅ذ໊͚Δͱخ͍͠
w ݅ذͷ໊͚Ϩϕϧʙ
w Ϩϕϧมʹ͢Δ
w Ϩϕϧؔʢϝιουʣʹ͢Δ
w Ϩϕϧ4QFDJ
fi
DBUJPOΫϥεʹ͢Δ
w ͍ͭͰ໊͚Ε͍͍ͬͯΜ͡Όͳ͍ͷͰؾΛ͚ͭΑ͏
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5IBOLZPV