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Is Ruby pass by reference or by value?
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Ruby uses "pass by object reference"
(Using Python's terminology.)
To say Ruby uses "pass by value" or "pass by reference" isn't really descriptive enough to be helpful. I think as most people know it these days, that terminology ("value" vs "reference") comes from C+...
Correct way to detach from a container without stopping it
...s used to launch the container:
[berto@g6]$ docker run -ti -d --name test python:3.6 /bin/bash -c 'while [ 1 ]; do sleep 30; done;'
b26e39632351192a9a1a00ea0c2f3e10729b6d3e22f8e0676d6519e15c08b518
[berto@g6]$ docker attach test
# here I typed ^P^Q
read escape sequence
# i'm back to my prompt
[ber...
How to parse the AndroidManifest.xml file inside an .apk package
...sing the Android Asset Packaging Tool (aapt), from the Android SDK, into a Python (or whatever) script?
Through the aapt (http://elinux.org/Android_aapt), indeed, you can retrieve information about the .apk package and about its AndroidManifest.xml file. In particular, you can extract the values of...
Why does pycharm propose to change method to static
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@Talha: self is not removed in Python3 at all.
– Junuxx
May 31 '19 at 0:08
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show 6 more comment...
How to migrate back from initial migration in Django 1.7?
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You can do the same with Django 1.7+ also:
python manage.py migrate <app> zero
This clears <app> from migration history and drops all tables of <app>
See django docs for more info.
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Understand homebrew and keg-only dependencies
...nssl version, it always shows the one from os (LibreSSL) but when I run my python in interactive mode, it is actually using openssl. Can you help me understand how python picked up the correct openssl? @echristopherson
– Alex
Apr 29 at 22:58
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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
How do I implement the following (Python pseudocode) in C++?
21 Answers
21
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How do I know if a generator is empty from the start?
...d me a lot with my current project. I found a similar example in code for python's standard library module 'mailbox.py'. This method is for backward compatibility only. def next(self): """Return the next message in a one-time iteration.""" if not hasattr(self, '_onetime_keys'):...
糯米推全景地图 让竞争对手们如何接招？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...小缩影。糯米语音搜索，度秘等人工智能O2O入口，百度大数据在O2O的应用，如交叉销售和精准营销的探索，都是这盘技术O2O棋局的落子。全景地图15天上线，说明糯米在新美大整合期的狼性不可小觑。说到底，全景地图是强化百...
Android中Java和JavaScript交互 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，对于简单的类型会尝试转换成字符串返回，对于复杂的数据类型，建议以字符串形式的json返回。
evaluateJavascript方法必须在UI线程（主线程）调用，因此onReceiveValue也执行在主线程。
疑问解答
Alert无法弹出
你应该是没有设...