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ishideo id:ishideo

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Python ã®åž‹ã‚·ã‚¹ãƒ†ãƒ ã®ä¸Šã§ Immutable ãª Python ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ä½œã‚‹ - ç—…ã¿ã¤ãã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãƒ–ãƒã‚°
ã¾ãˆãŒã ä»Šå¹´ã® PyCon JP 2020 ã«ã¦ã€ŒPython 3.9 æ™‚ä»£ã®åž‹å®‰å…¨ãª Python ã®æ¥µã‚æ–¹ã€ã¨ã„ã†ã‚¿ã‚¤ãƒˆãƒ«ã§ç™»å£‡ã•ã›ã¦ã„ãŸã ãã¾ã™ã€‚æœ¬ç¨¿ã¯ã€ç™ºè¡¨ã®è£œè¶³ã¨ãªã‚‹ã€Œåž‹ãƒ’ãƒ³ãƒˆã‚’ä½¿ã£ã¦ Immutable ãª Python ã‚’å®Ÿç¾ã™ã‚‹æ–¹æ³•ã€ã«ã¤ã„ã¦ç´¹ä»‹ã—ãŸã‚‚ã®ã§ã™ã€‚ Python ã®åž‹ãƒ’ãƒ³ãƒˆ Python ã«ã¯ã€Œåž‹ãƒ’ãƒ³ãƒˆã€ã¨ã„ã†æ©Ÿèƒ½ãŒã‚ã‚Šã€åž‹ã‚’ãƒ—ãƒã‚°ãƒ©ãƒ å†…ã«å®£è¨€ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ age: int = 28 name: str = 'Bruce Wayne' Python ã¯å‹•çš„åž‹ä»˜ãè¨€èªžã§ã‚ã‚‹ãŸã‚ã€ã“ã®æƒ…å ±ã¯ãƒ©ãƒ³ã‚¿ã‚¤ãƒ (å®Ÿè¡Œæ™‚)ã«ã¯ã‚ã¾ã‚Šæ„å‘³ãŒãªã„ã®ã§ã™ãŒã€ mypy ãªã©ã®åž‹ãƒã‚§ãƒƒã‚¯ãƒ„ãƒ¼ãƒ«ã‚’ã¤ã‹ã†ã¨ã€åž‹ã®èª¤ã‚Šã‚’ãƒã‚§ãƒƒã‚¯ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ def check_batman(name: str) -> bool: return name == 'Bruce Wayne' a
ishideo 2020/08/23
python

typing

immutable

protocol
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Python3.7ã§å°Žå…¥ã•ã‚ŒãŸdataclasså…¥é–€ - MyEnigma
Pythonå®Ÿè·µå…¥é–€ â”€â”€ è¨€èªžã®åŠ›ã‚’å¼•ãå‡ºã—ã€é–‹ç™ºåŠ¹çŽ‡ã‚’é«˜ã‚ã‚‹ (WEB+DB PRESS plusã‚·ãƒªãƒ¼ã‚º) ç›®æ¬¡ ç›®æ¬¡ ã¯ã˜ã‚ã« é€šå¸¸ã®classã¨dataclassã®æ¯”è¼ƒ dataclassã®è‰¯ã„ã¨ã“ã‚ ãƒ‡ãƒ¼ã‚¿ã‚’æ ¼ç´ã™ã‚‹ç®±ã§ã‚ã‚‹ã“ã¨ã‚’æ˜Žç¢ºã«ã§ãã‚‹ã€‚ ã‚¯ãƒ©ã‚¹å®šç¾©ã‚’çŸãã‹ã‘ã‚‹ åž‹æƒ…å ±ã‚’æ›¸ãã“ã¨ã§ãƒ‡ãƒ¼ã‚¿æ§‹é€ ãŒè¦‹ã‚„ã™ããªã‚‹ã€‚ Printã—ãŸã¨ãã«ã€ãã®ã¾ã¾ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ä¸èº«ã‚’è¡¨ç¤ºã§ãã‚‹ã€‚ asdicté–¢æ•°ã§dictã«å¤‰æ›ã§ãã‚‹ã€‚(Dictã‹ã‚‰ç°¡å˜ã«JSONã«ã‚‚å¤‰æ›ã§ãã‚‹) Dict(JSON)ã‹ã‚‰dataclassã‚’ä½œã‚‹ã“ã¨ã‚‚ã§ãã‚‹ Frozenå¼•æ•°ã‚’ä½¿ã†ã“ã¨ã§ã€ç°¡å˜ã«ã‚¤ãƒŸãƒ¥ãƒ¼ã‚¿ãƒ–ãƒ«ã«ã‚‚ã§ãã‚‹ã€‚ ãƒ‡ãƒ¼ã‚¿ãŒä½œã‚‰ã‚ŒãŸã¨ãã«ã€è‡ªå‹•å¾Œå‡¦ç†æ©Ÿèƒ½ã‚’è¿½åŠ ã™ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ dataclassã®æ®‹å¿µãªã¨ã“ã‚ ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã®åˆæœŸåŒ– å‚è€ƒè³‡æ–™ MyEnigma Supporters ã¯ã˜ã‚ã« C++ãƒ¦ãƒ¼ã‚¶ã‚„J
ishideo 2020/03/09
asdict

python

dataclasses

dataclass

decorator

frozen

immutable
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Pythonã®å€¤æ¸¡ã—ã¨å‚ç…§æ¸¡ã— - amacbee's blog
ã“ã‚Œã¯Python Advent Calendar 2016 7æ—¥ç›®ã®è¨˜äº‹ã§ã™ï¼Ž ã‚¢ãƒ‰ãƒ™ãƒ³ãƒˆã‚«ãƒ¬ãƒ³ãƒ€ãƒ¼ã®æ—¥ç¨‹ã‚’å‹˜é•ã„ã—ã¦ã—ã¾ã£ã¦ã„ãŸã®ã§ï¼Œç¤¾å†…å‘ã‘ã«ä½œã£ãŸPythonè³‡æ–™ã‚’ä½¿ã„ã¾ã‚ã™ã“ã¨ã§ãŠèŒ¶ã‚’æ¿ã—ã¾ã™ã€‚ã€‚ã€‚ Pythonã®å€¤æ¸¡ã—ã¨å‚ç…§æ¸¡ã—ã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ã¿ã¾ã™ï¼Ž Pythonã§ã¯ï¼Œå¤‰æ•°ã‚„é–¢æ•°ã«å€¤ã‚’æ¸¡ã™å ´åˆã™ã¹ã¦å‚ç…§æ¸¡ã—ã§æ¸¡ã•ã‚Œã¦ã„ã¾ã™ï¼Žä¾‹ãˆã°æŒ™å‹•ã ã‘è¦‹ã‚Œã°å€¤æ¸¡ã—ã«è¦‹ãˆã‚‹intåž‹ã§ã‚‚ï¼Œå€¤ãŒå¤‰æ›´ã•ã‚Œã‚‹ã¾ã§ã¯å…ƒã®å€¤ã¨åŒä¸€ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’å‚ç…§ã—ã¦ã„ã¾ã™ï¼Ž ä¾‹ã‚’è¦‹ã¦ã¿ã¾ã—ã‚‡ã†ï¼Ž >>> def foo(a): ... print(a, id(a)) ... a += 1 ... print(a, id(a)) ... >>> b = 0 >>> print(b, id(b)) 0 4297514880 # 'b' ç”¨ã®é ˜åŸŸãŒç¢ºä¿ã•ã‚Œã¦ã„ã‚‹ >>> foo(b) 0 4297514880 # ã“ã“ã¾
ishideo 2020/03/04
python

reference

value

immutable

mutable

pointer

copy

deepcopy

oop

default-variable
ãƒªãƒ³ã‚¯
Immutable data structures in Python
ishideo 2020/03/03
immutable

python

pysistence

functional
ãƒªãƒ³ã‚¯
Python3.7ã‹ã‚‰ã¯ã€ŒData Classesã€ãŒã‚¯ãƒ©ã‚¹å®šç¾©ã®ã‚¹ã‚¿ãƒ³ãƒ€ãƒ¼ãƒ‰ã«ãªã‚‹ã‹ã‚‚ã—ã‚Œãªã„ - Qiita
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ishideo 2019/09/19
python

dataclasses

qiita

immutable

namedtuple
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Pythonã§å§‹ã‚ã¦ã¿ã‚ˆã†é–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°
Understand the mechanism! Let's do screenshots tests of Compose Previews with various variations / ä»•çµ„ã¿ã‹ã‚‰ç†è§£ã™ã‚‹ï¼Composeãƒ—ãƒ¬ãƒ“ãƒ¥ãƒ¼ã‚’æ§˜ã€…ãªãƒãƒªã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ã§ã‚¹ã‚¯ãƒªãƒ¼ãƒ³ã‚·ãƒ§ãƒƒãƒˆãƒ†ã‚¹ãƒˆã—ã‚ˆã†
ishideo 2019/09/18
python

functional

pampy

pyrsistent

fn.py

pattern-matching

immutable

persistent

data-structures
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GitHub - tobgu/pyrsistent: Persistent/Immutable/Functional data structures for Python
Pyrsistent is a number of persistent collections (by some referred to as functional data structures). Persistent in the sense that they are immutable. All methods on a data structure that would normally mutate it instead return a new copy of the structure containing the requested updates. The original structure is left untouched. This will simplify the reasoning about what a program does since no
ishideo 2019/09/18
python

persistent

immutable

functional

pyrsistent

data-structures

github
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Ruby2.3ã§å°Žå…¥ã•ã‚ŒãŸfrozen_string_literalãƒžã‚¸ãƒƒã‚¯ã‚³ãƒ¡ãƒ³ãƒˆã§Immutable Stringã‚’å®Ÿç¾ã™ã‚‹
Ruby2.3ã§å°Žå…¥ã•ã‚ŒãŸfrozen_string_literalãƒžã‚¸ãƒƒã‚¯ã‚³ãƒ¡ãƒ³ãƒˆã§Immutable Stringã‚’å®Ÿç¾ã™ã‚‹ ç›®æ¬¡ Immutable String in Ruby3 è¿½è¨˜ï¼ˆ2019-08-07ï¼‰Immutable String in Ruby2.3+frozen_string_literal ã®æ©Ÿèƒ½ã‚’è©¦ã™ frozen_string_literalå…¥ã‚Šã®ã‚³ãƒ¼ãƒ‰frozen_string_literalç„¡ã—ã®ã‚³ãƒ¼ãƒ‰frozen_string_literal ã¯ãƒ•ã‚¡ã‚¤ãƒ«æ¯Žã«è¨å®šã•ã‚Œã‚‹mutableãªStringã‚’å®šç¾©ã™ã‚‹ã«ã¯ã©ã†ã—ãŸã‚‰ã‚ˆã„ï¼Ÿ æ–¹æ³•1: String#dupæ–¹æ³•2: String#+@ã¾ã¨ã‚å‚è€ƒImmutable String in Ruby3Ruby3 ã§ã¯æ–‡å—åˆ—ãŒãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ immutable ã«ãªã‚‹ã¨ã„ã†å¤§ããªå¤‰æ›´ãŒäºˆå®šã•ã‚Œã¦ã„ã‚‹ï¼ˆè¿½è¨˜ã‚ã‚Šï¼‰ã€‚ Ru
ishideo 2018/03/18
ruby

frozen_string_literal

option

immutable

string
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Rubyã§å®šæ•°ã‚’æ‰±ã†å ´åˆã¯freezeã™ã‚‹ã¹ã - Qiita
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ishideo 2018/02/28
ruby

variable

constant

freeze

qiita

immutable
ãƒªãƒ³ã‚¯
Immutable List Gem (KLab ALMç‰ˆ)
ishideo 2017/08/21
ruby

immutable

list

gem

slideshare

ocaml
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Python/pandasã®ãƒ‡ãƒ¼ã‚¿å‡¦ç†ã§å†å¸°ä»£å…¥æ’²æ»…å§”å“¡ä¼š
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ishideo 2017/07/09
assign

rename

pandas

python

groupby

pipe

pivot

qiita

substitution

immutable
ãƒªãƒ³ã‚¯
å¯å¤‰æ€§ã®å›žé¿ â€• Rubyã¸ã®é–¢æ•°åž‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚¹ã‚¿ã‚¤ãƒ«ã®é©ç”¨ | POSTD
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ishideo 2016/08/12
ruby

functional

immutable

fp

postd
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