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| author | nsfisis <nsfisis@gmail.com> | 2024-01-23 21:30:18 +0900 |
|---|---|---|
| committer | nsfisis <nsfisis@gmail.com> | 2024-01-24 15:37:02 +0900 |
| commit | 2385ed412d841178f936c4e779cc614576726ac2 (patch) | |
| tree | 3812dfbd9d5ea5f4cc1e0a6da53a5f25488b5057 /slide.saty | |
| parent | 7f227daa9f1afc73ebd7ace969391acedceed06a (diff) | |
| download | phpstudy-160-slides-main.tar.gz phpstudy-160-slides-main.tar.zst phpstudy-160-slides-main.zip | |
Diffstat (limited to 'slide.saty')
| -rw-r--r-- | slide.saty | 71 |
1 files changed, 50 insertions, 21 deletions
@@ -93,14 +93,12 @@ enum OptionalInt { > +frame{実現したいもの}< - +code-block-php(`/** @return TODO */ -function f(): TODO { - return /* Some(int) か None を返す */; -} + +code-block-php(`// OptionalInt を返す関数 +function f() { /* 略 */ } $x = f(); -if (/* $x が Some かどうか判定する */) { - echo /* $x が内部に持っている int の値を「型安全に」取り出す */; +if (/* $x が値を持っているかどうか判定する */) { + echo /* $x が内部に持っている int の値を「安全に」取り出す */; } `); > @@ -120,6 +118,7 @@ if (/* $x が Some かどうか判定する */) { %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +section{|Array shape 編|}< +frame{Array shape}< +code-block-php(`$none = [ 'has_value' => false, @@ -160,9 +159,11 @@ if ($x['has_value']) { } `); > + > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +section{|Object shape 編|}< +frame{Object shape}< +code-block-php(`/** @var object{has_value: false} $none */ $none = (object)[ @@ -187,9 +188,11 @@ if ($x->has_value) { } `); > + > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +section{|Type assertion 編|}< +frame{Type assertion}< +code-block-php(`/** @phpstan-assert-if-true int $a */ /** @phpstan-assert-if-false !int $a */ @@ -246,24 +249,29 @@ class OptionalIntSome extends OptionalInt { } `); > + > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +frame{ここまでのまとめ}< +fig-center(vconcat [ - gap 75pt; - big-textbox{Array ではうまく動く}; + gap 40pt; + big-textbox{Array shape ではうまく動く}; gap 20pt; - big-textbox{Object では動かない / 課題アリ}; + big-textbox{Object shape では動かない}; gap 20pt; - big-textbox{Object でも型を絞り込みたい}; + big-textbox{Type assertion では動くが課題アリ}; + gap 40pt; + big-textbox{Object shape でも型を絞り込みたい！}; ]); > + +section{|PHPStan 魔改造編|}< +frame{PHPStan 魔改造}< +code-block-php(`if ($x['has_value']) { - // $x['has_value'] の型が true に確定したことで、 - // $x に HasOffsetValueType('has_value', true) の型が付く + // $x['has_value'] の型が truthy に確定したことで、 + // $x に HasOffsetValueType('has_value', truthy) + // という型が付く echo $x['value']; } `); @@ -271,8 +279,9 @@ class OptionalIntSome extends OptionalInt { +frame{PHPStan 魔改造}< +code-block-php(`if ($x['has_value']) { - // $x['has_value'] の型が true に確定したことで、 - // $x に HasOffsetValueType('has_value', true) の型が付く + // $x['has_value'] の型が truthy に確定したことで、 + // $x に HasOffsetValueType('has_value', truthy) + // という型が付く echo $x['value']; } `); @@ -280,21 +289,30 @@ class OptionalIntSome extends OptionalInt { +code-block-php(`// (array{has_value: false} // |array{has_value: true, value: int}) // と -// HasOffsetValueType('has_value', true) +// HasOffsetValueType('has_value', truthy) // とを合成する -`); + +`#); > +frame{PHPStan 魔改造}< +fig-center(vconcat [ - gap 40pt; - big-textbox?:(24pt){HasPropertyValueType}; + gap 75pt; + big-textbox?:(24pt){HasOffsetValueType を付ける}; gap 20pt; - big-textbox?:(24pt){HasPropertyValueType と object shape の合成}; + big-textbox?:(24pt){HasOffsetValueType と array shape を合成する}; + ]); + > + + +frame{PHPStan 魔改造}< + +fig-center(vconcat [ + gap 75pt; + big-textbox?:(24pt){HasPropertyValueType を付ける}; gap 20pt; - big-textbox?:(24pt){内から外への型の伝播}; + big-textbox?:(24pt){HasPropertyValueType と object shape を合成する}; ]); > + > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -303,10 +321,21 @@ class OptionalIntSome extends OptionalInt { gap 75pt; big-textbox?:(24pt){PHPStan と array shape を使った ADT もどき}; gap 20pt; - big-textbox?:(24pt){Object の型の絞り込みは未実装}; + big-textbox?:(24pt){Object shape での型の絞り込みは未実装}; gap 20pt; big-textbox?:(24pt){現在鋭意実装中}; ]); > + +frame{宣伝}< + +fig-center(vconcat [ + gap 75pt; + big-textbox{3/7-9: PHPerKaigi 2024}; + gap 20pt; + big-textbox{3/15-16: Ya8 2024}; + gap 20pt; + big-textbox{4/13: PHPカンファレンス小田原 2024}; + ]); + > + > |