n any of these platforms the server is listening on the given port
Jupyter
Starting version 1.6 or later can find a list of open tabs with the following info…
Open tab # Show the tabs
Here’s an example from the GitHub repo:
All open tabs # All on the server
Here’s a snapshot from the GitHub repo:
Open a new tab, open the following tabs. See if you can find an unmodified extension that fits this tab. # The following command should be used to open those tabs. # The following command should work here.
After all this configuration, the server is listening on port 127.0.0.1, and the server listening on port 4667, so we can change some of the output using the following instructions:
After that, a server-list file should be created to store the list
You can do this with the following commands when opening these tabs:
You are getting the message The notebook server failed to start: Invalid connection. Try again later.
What caused the problem? Please refer to our technical help link.
How to troubleshoot the notebook server failure
If you experienced a problem not listed above with this notebook server please use our troubleshooting tips for the notebook server.
What is the exact cause of the problem with the notebook server?
The notebook server is not up to date; the notebook server itself is not updated
The notebook server server may be on an incorrect network address. Please check on the network address at your chosen time
If your notebook server is offline in an area of the universe, try changing the server address and doing a restart of your notebook server, and make a backup. The notebook server will not see your changes but you will not be able to restore it.
How should I fix the laptop problem when the server crashes?
If a problem with the notebook server is not listed above, please refer to our technical help link for assistance in solving the notebook server problems.
What is the cause of the problem with the laptop?
This notebook server is not up to date. It may be out of date or being downgraded.
Clubhouse is an audio-based social media application. This article describes how to install it on clubhouse android app. The company describes itself as “a new kind of voice-based social product that enables people around the world to speak, tell stories, develop ideas, deepen friendships and meet new people.” Basically, you can get in and out of different discussions on different topics through live podcasts. You can just listen or choose to post your thoughts. Imagine a cocktail party or a clubhouse.
Introduction
Clubhouse is an audio platform. In the digital “room” people can chat in real time. So far, iPhone users can only use this feature after receiving an invitation from a registered user. Registered users can create personal profiles, open new “rooms” together, and announce their conversations in the calendar so that others can listen to them. The moderator chairs the discussion by turning the audience into speakers or cutting off participants again. If they wish to name the host as the speaker, they can raise their hand.
Installer Clubhouse sur iOS
The Clubhouse iOS app lets you work with your team even on the go.
Download Clubhouse to find, create and edit stories anytime, anywhere, and access your workspace, space, dashboard, and event feed from your iPhone, iPad, or iPod touch.
The Clubhouse iOS app can be used with any device running iOS 9.0 or higher.
Clubhouse mentioned Android apps in their last blog post in January 2021.
The post is essentially an important announcement from the company that it has committed to opening the app to “the world” in 2021.
But Google users should see this change soon: Obviously, that’s not the release date.
In fact, it’s not even the start date for development. What we do know is that so far Clubhouse is specific to iOS, and the company has announced that it will start developing its Android apps. This can mean that it will come out several months or even years later. We just don’t know that.
This article describes a python implementation of bitcoin mining that relies on an algorithm based on a double hash SHA-256.
Introduction – Principle of the bitcoin mining agorithm
Miners on the bitcoin network should look for the nonce which is a 32-bit number. The miner will successively test several NONCEs (1,2,3 …. 10 ^ 32-1), for each of the nonce he creates the following header and hasher twice with a SHA-256 bit hash function.
Field
Description
Size
version
Version
4
Hash previous block
256-bit hash of the previous block
32
Merkle root
This is a hash on the data in the block. It is provided to the miner and it contains a summary of the transactions that are contained in the block.
32
time
A digital timestamp that represents the number of seconds since 1970-01-01T00: 00 UTC
4
bits
The current target in compacted format
4
nonce
32-bit number (starts at 0)
4
Once the hash obtained, the miner must then check that the hash obtained is lower than the target difficulty factor of the block. If the hash obtained is greater then the nonce is not the correct one, another must be tested.
Example on block 671712
If you are using a blockhain bitoin explorer (for example blocstream info), if we take for example block 671712:
In this case here is an algorithm in python which allows to mine this block:
In this simulation I display the header and the calculated hash as well as the hash rate.
The nonce to find for block 671712 was 4107802144
in hexadecimal : 0xf4d81620
This algorithm starts with a nonce = 4107802144 – 400 we will act as if we were very close to finding the block (400 double hashes are missing to find the block):
When you try to lauchn the utility sdkmanager for android SDK you get the following error : Exception in thread “main” java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
To solve this error Godot status != 0x8CD5 in RasterizerGLES2 – rasterizer_gles2.cpp a way to do it is to force using OPENGL2.1 with parameter --video-driver GLES2 the complete command is :
Update Python easy update to Python 3.9 with homebrew – To update Mac os python from an older version to the latest python example python 3.9.1 you can do the folowing :
This article briefly describes how to replace its version of python on Mac. I wrote a similar article some time ago.
godot % scons
scons: Reading SConscript files ...
Automatically detected platform: osx
Building for macOS 10.12+, platform x86-64.
YASM is necessary for WebM SIMD optimizations.
WebM SIMD optimizations are disabled. Check if your CPU architecture, CPU bits or platform are supported!
Checking for C header file mntent.h... no
scons: done reading SConscript files.
scons: Building targets ...
[Initial build] Compiling ==> platform/osx/crash_handler_osx.mm
[Initial build] Compiling ==> platform/osx/os_osx.mm
[Initial build] Building RD_GLSL header: "servers/rendering/renderer_rd/shaders/canvas.glsl.gen.h"
[Initial build] Building RD_GLSL header: "servers/rendering/renderer_rd/shaders/canvas_occlusion.glsl.gen.h"
[Initial build] Building RD_GLSL header: "servers/rendering/renderer_rd/shaders/scene_forward.glsl.gen.h"
[Initial build] Building RD_GLSL header: "servers/rendering/renderer_rd/shaders/canvas_sdf.glsl.gen.h"