jsPlumb is an option available that supports drag and drop, as seen by its numerous demos, including the Flowchart demo. It is available in a free Community edition and a paid Toolkit edition. The Toolkit edition wraps the Community edition with a comprehensive data binding layer, as well as several UI widgets for building applications … Read more
How to install Apple’s Network Link Conditioner These instructions current as of October 2019. Warning: If you just upgraded to new version of macOS, make sure you install the very latest Network Conditioner (in Additional Tools for Xcode) or it may silently fail; that is, you will turn it on but it won’t throttle anything … Read more
Zip archives are actually more a ‘filesystem’ with content metadata etc. See help(unzip) for details. So to do what you sketch out above you need to Create a temp. file name (eg tempfile()) Use download.file() to fetch the file into the temp. file Use unz() to extract the target file from temp. file Remove the … Read more
The reason this error occurs is because Windows automatically generates resolv.conf file with wrong nameserver. To resolve this issue, follow the following steps. Locate the file by running the following command: sudo nano /etc/resolv.conf You will see the following in the file: # This file was automatically generated by WSL. To stop automatic generation of … Read more
For me it was tls12: ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
You want to look at the nodes in /sys/class/net/ I experimented with mine: Wire Plugged in: eth0/carrier:1 eth0/operstate:unknown Wire Removed: eth0/carrier:0 eth0/operstate:down Wire Plugged in Again: eth0/carrier:1 eth0/operstate:up Side Trick: harvesting all properties at once the easy way: grep “” eth0/* This forms a nice list of key:value pairs.
There are several possible causes. The other end has deliberately reset the connection, in a way which I will not document here. It is rare, and generally incorrect, for application software to do this, but it is not unknown for commercial software. More commonly, it is caused by writing to a connection that the other … Read more
Step 1 Download the mongodb Step 2 Follow normal setup instructions Step 3 Create the following folder C:\data\db Step 4 cd to C:\Program Files\MongoDB\Server\3.2\bin> enter command mongod by default, mongodb server will start at port 27017 Step 5 (optionally) download RoboMongo and follow normal setup instructions Step 6 Start RoboMongo and create a new connection … Read more
What is the difference between connection and read timeout for sockets? The connection timeout is the timeout in making the initial connection; i.e. completing the TCP connection handshake. The read timeout is the timeout on waiting to read data1. If the server (or network) fails to deliver any data <timeout> seconds after the client makes … Read more
From CLI: $ su – postgres $ psql template1 template1=# CREATE USER tester WITH PASSWORD ‘test_password’; template1=# GRANT ALL PRIVILEGES ON DATABASE “test_database” to tester; template1=# \q PHP (as tested on localhost, it works as expected): $connString = ‘port=5432 dbname=test_database user=tester password=test_password’; $connHandler = pg_connect($connString); echo ‘Connected to ‘.pg_dbname($connHandler);