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when does Python allocate new memory for identical strings?

Two Python strings with the same characters, a == b, may share memory, id(a) == id(b), or may ... historical footnote: SPITBOL uniquified all strings ca. 1970. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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when i try to run my webpack-dev-server, it gives me following error, that module is not found

[![const path = require("path"); const webpack = require("webpack"); module.exports = { mode: "development", ... -run-my-webpack-dev-server-it-gives-me-following-error-that-modul...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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when i install python 3.9 on chromebook with linux penguin i still see the old version

I am not a linux user, so this might be a basic question. I am trying to upgrade python version from 3.5 to 3.9 ... -3-9-on-chromebook-with-linux-penguin-i-still-see-the-old-v...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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when i built ffmpeg to push raspberry pi 4 camera stream to my sever,I get Unknown input format: 'h264' ERROR

input: raspivid -o - -t 0 -vf -hf -fps 10 -b 500000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le ... -ffmpeg-to-push-raspberry-pi-4-camera-stream-to-my-sever-i-get-unkno...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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when firebase mobile authentication charge me?

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. ... com/questions/65910586/when-firebase-mobile-authentication-charge-me...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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971 views

1 answer

when using constraints in ios autolayout, are there benefits to shorter constraint chains?

For example, when I want to make the leading value of 10 different UI elements match, should I be ... -constraints-in-ios-autolayout-are-there-benefits-to-shorter-constrai...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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when running a simple python code it complains about main and spec being NONE

I am new to python and I found a very intesting library I need to play with which is only written in python ... a-simple-python-code-it-complains-about-main-and-spec-being-none...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

when npm start vs terminal for react Error: Cannot find module 'D: eact-scriptsin eact-scripts.js'

when npm start vs terminal for react Error: Cannot find module 'D: eact-scriptsin eact-scripts.js' { code: ' ... -vs-terminal-for-react-error-cannot-find-module-d-react-scripts...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

when opening Xcode, stuck in "install additional required components" loop

When Opening Xcode, I am presented with a dialog box: "Install additional required components? Xcode requires ... opening-xcode-stuck-in-install-additional-required-components-loop...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

when opening Xcode, stuck in "install additional required components" loop

When Opening Xcode, I am presented with a dialog box: "Install additional required components? Xcode requires ... opening-xcode-stuck-in-install-additional-required-components-loop...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

when i run C code in visual studio code it shows me jus t" running" in the output window and nothing else

#include<stdio.h> int main(void) { double gasCost; int passengers; printf("enter passengers and price"); scanf("%d %lf ... visual-studio-code-it-shows-me-jus-t-running-in-the-outpu...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

1 answer

when i open pgAdmin in internet Explorer the following messeges show in internet explorer.plz help me

when i open pgAdmin in internet Explorer the following messeges show in internet explorer....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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