Re: [python] Spojovani retezcu: (bylo: Rekurzivní generátor v Pythonu 3?)

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From	Honza Král <honza.kral@gmail.com>
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Subject	Re: [python] Spojovani retezcu: (bylo: Rekurzivní generátor v Pythonu 3?)
Date	Sun, 28 Aug 2016 17:04:18 +0200
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2016-08-28 16:51 GMT+02:00 Jirka Vejrazka <jirka.vejrazka@gmail.com>:
> Jenom poznamka ne okraj:
>
> "nedělej skládání řetězců stylem txt += part, je to strašně pomalé (O(n^2)
> místo O(n)).. Z txt si udělej list a používej append: txt.append(part) a na
> konci "".join(txt)."
>
> Tohle platilo nekdy do vydani Pythonu 2.5. V te verzi bylo spojovani retezcu
> pomoci += vyrazne zrychleno a dnes uz to neni takove vykonove omezeni, jako
> driv.

Pokud je tech textu vice, .join() je stale lepsi, vice detailu:
https://youtu.be/odjpaKL-Fsg?t=20m45s

>
> Ale je fakt, ze ''.join pouzivam ze zvyku taky :)
>
>   Jirka
>
> On 28 August 2016 at 13:52, Petr Messner <petr.messner@gmail.com> wrote:
>>
>>
>> co takhle tohle?
>>
>>
>> <verse>a b <mark sID="x"> c d</verse><verse>e f<mark eID="x"> g h</verse>
>>
>>
>> Oprava:
>>
>> <verse>a b <mark sID="x"/> c d</verse><verse>e f<mark eID="x"/> g
>> h</verse>
>>
>> PM
>>
>> _______________________________________________
>> Python mailing list
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>> http://www.py.cz/mailman/listinfo/python
>>
>> Visit: http://www.py.cz
>
>
>
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Re: [python] Spojovani retezcu: (bylo: Rekurzivní generátor v Pythonu 3?) Honza Král <honza.kral@gmail.com> - 2016-08-28 17:04 +0200

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