- 動的言語で大規模開発
823 ：デフォルトの名無しさん[sage]：2014/12/11(木) 11:19:57.50 ID:QX1K4VF2 - >>822
Stella の SECONDL の例を Squeak/Pharo Smalltalk のストリームを使って書いてみました。
参考まで。
| SECONDL IN OUT |
SECONDL := [:INPUT :OUTPUT |
| FIRSTL S1 S2 S3 |
FIRSTL := [:INS :MAX :OTHERS |
| I LASTMAX |
(LASTMAX := INS next) ifNil: [self error: 'empty stream'].
[INS atEnd] whileFalse: [
(I := INS next) > LASTMAX ifTrue: [I := LASTMAX flag: (LASTMAX := I)].
OTHERS nextPut: I].
MAX nextPut: LASTMAX].
S1 := INPUT.
S2 := ReadWriteStream on: IntegerArray new.
S3 := OUTPUT.
FIRSTL value: S1 value: NullStream new value: S2.
FIRSTL value: S2 reset value: S3 value: NullStream new
].
IN := #(54 16 1 58 93 57 84 72 32 25) asIntegerArray readStream.
OUT := ReadWriteStream on: IntegerArray new.
SECONDL value: IN value: OUT.
OUT reset next "=> 84 "
|