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Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
...r void functions. Predicate and some other special cases also exist. See: https://msdn.microsoft.com/en-us/library/bb534960(v=vs.110).aspx
I wonder what the reason was why the language designers opted for Function,
Bifunction and did not continue until DecaExiFunction?
The answer to the secon...
Create timestamp variable in bash script
... the complete list of these specifiers in the official documentation here: https://www.gnu.org/software/coreutils/manual/html_node/Time-conversion-specifiers.html#Time-conversion-specifiers
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Timeout command on Mac OS X?
... timeout() { perl -e 'alarm shift; exec @ARGV' "$@"; }
Snagged from here:
https://gist.github.com/jaytaylor/6527607
Instead of putting it in a function, you can just put the following line in a script, and it'll work too:
timeout.sh
perl -e 'alarm shift; exec @ARGV' "$@";
or a version that has bui...
What is a stack trace, and how can I use it to debug my application errors?
... org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:943)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
at org.mortb...
Update Eclipse with Android development tools v. 23
...elp → Install New Software...
For "Work with", select the Android source https://dl-ssl.google.com/android/eclipse
Tick ADT v23.0 for installation, then click "Next"
Eclipse will show "Install Remediation Page" since there is conflict with previous version. (If it does not, see below.) Select "Up...
Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How do I parse a YAML file in Ruby?
...ch
self.metadata = YAML.load(md[:metadata])
end
Source and discussion: https://practicingruby.com/articles/tricks-for-working-with-text-and-files
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Is Java Regex Thread Safe?
...= email_pattern.matcher(email);
return matcher.matches();
}
}
see http://zoomicon.wordpress.com/2012/06/01/validating-e-mails-using-regular-expressions-in-java/ (near the end) regarding the RegEx pattern used above for validating e-mails (in case it doesn't fit ones needs for e-mail validat...
What to add for the update portion in ConcurrentDictionary AddOrUpdate
...or that key if the key already exists: Use the indexer’s setter
(See: http://blogs.msdn.com/b/pfxteam/archive/2010/01/08/9945809.aspx)
The indexer is atomic, too. If you pass a function instead, it might not be:
All of these operations are atomic and are thread-safe with regards to all oth...
How to fluently build JSON in Java?
...
I recently created a library for creating Gson objects fluently:
http://jglue.org/fluent-json/
It works like this:
JsonObject jsonObject = JsonBuilderFactory.buildObject() //Create a new builder for an object
.addNull("nullKey") //1. Add a null to the objec...