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Installing Java 7 on Ubuntu
...ind a paywall. Also, OpenJDK has grown up and is a more viable alternative nowadays.
In Ubuntu 16.04 and higher, Java 7 is no longer available. Usually you're best off installing Java 8 (or 9) instead.
sudo apt-get install openjdk-8-jre
or, f you also want the compiler, get the jdk:
sudo apt-...
Issue with virtualenv - cannot activate
...cannot.
It might just be syntax or folder location, but I am stumped right now.
21 Answers
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What algorithm gives suggestions in a spell checker?
...n distance is not exactly the right edit distance for a spell checker. It knows only insertion, deletion and substitution. Transposition is missing and produces 2 for a transposition of 1 character (it's 1 delete and 1 insertion). Damerau–Levenshtein distance is the right edit distance.
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DateTime format to SQL format using C#
...
try this below
DateTime myDateTime = DateTime.Now;
string sqlFormattedDate = myDateTime.ToString("yyyy-MM-dd HH:mm:ss.fff");
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Two versions of python on linux. how to make 2.7 the default
..., or put it in your ~/.bashrc if you want the change to be persistent, and now when you type python it runs your chosen 2.7, but when some program on your system tries to run a script with /usr/bin/env python it runs the standard 2.6.
Alternatively, just create a virtual environment out of your 2...
Summarizing multiple columns with dplyr? [duplicate]
...x. I have a data frame with different variables and one grouping variable. Now I want to calculate the mean for each column within each group, using dplyr in R.
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Printing a variable memory address in swift
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Swift 2
This is now part of the standard library: unsafeAddressOf.
/// Return an UnsafePointer to the storage used for `object`. There's
/// not much you can do with this other than use it to identify the
/// object
Swift 3
For Swift ...
MySQL root access from all hosts
...oot:
netstat -tupan | grep mysql
Update For Ubuntu 16:
Config file is (now)
/etc/mysql/mysql.conf.d/mysqld.cnf
(at least on standard Ubuntu 16)
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How to avoid installing “Unlimited Strength” JCE policy files when deploying an application?
...s 256-bit AES encryption which is not supported by Java out of the box. I know to get this to function correctly I install the JCE unlimited strength jars in the security folder. This is fine for me being the developer, I can install them.
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App Inventor 2 扩展 · App Inventor 2 中文网
...Choosing a package name for your extension
3.4 Sharing your extension
Acknowledgements
Appendix A: Temporary instructions for obtaining the source code
1. Overview of App Inventor extension components
App Inventor apps are built using components. Components let the apps use the built-in featu...