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How to generate the JPA entity Metamodel?
...etamodel Generator jar in the classpath and compiler level>=1.6 that is all you need build the project and metamodel will be generated automatically.
In case of IDE Eclipse
1. goto Project->Properties->Java Compiler->Annotation Processing and enable it.
2. Expand Annotation Processing...
How do I detect the Python version at runtime? [duplicate]
...
FYI this works, but the python_version function returns a string (e.g. on my system it prints '3.6.1'). If you're checking the version in an if statement like the OP is, Chris' answer makes much more sense, as you don't have to go through the clunky process of searching the string f...
Launch custom android application from android browser
...link to http://twitter.com/status/1234:
Uri data = getIntent().getData();
String scheme = data.getScheme(); // "http"
String host = data.getHost(); // "twitter.com"
List<String> params = data.getPathSegments();
String first = params.get(0); // "status"
String second = params.get(1); // "1234"...
Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...d anything.
Q1. Yes, unless "enlist=false" is specified in the connection string. The connection pool finds a usable connection. A usable connection is one that's not enlisted in a transaction or one that's enlisted in the same transaction.
Q2. The second connection is an independent connection,...
How to get started on TDD with Ruby on Rails? [closed]
...the concepts (took testing classes in college), but I am not sure how to really use them yet since I never worked on a "real" TDD project.
...
How do I test for an empty string in a Bash case statement?
...ement uses globs, not regexes, and insists on exact matches.
So the empty string is written, as usual, as "" or '':
case "$command" in
"") do_empty ;;
something) do_something ;;
prefix*) do_prefix ;;
*) do_other ;;
esac
...
Object.watch() for all browsers?
...s answer I gave to a similar question works fine here)
I have created a small object.watch shim for this a while ago. It works in IE8, Safari, Chrome, Firefox, Opera, etc.
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What is SuppressWarnings (“unchecked”) in Java?
... onto the class itself or onto a long method). An example:
public List<String> getALegacyListReversed() {
@SuppressWarnings("unchecked") List<String> list =
(List<String>)legacyLibrary.getStringList();
Collections.reverse(list);
return list;
}
...
Why doesn't Ruby support i++ or i-- (increment/decrement operators)?
... @LuísSoares a.capitalize! does not reassign a, it will mutate the string that a refers to. Other references to the same string will be affected and if you do a.object_id before and after the call to capitalize, you'll get the same result (neither of which would be true if you did a = a.capi...
How to reference constants in EL?
...n EL 2.2 and older. There are several alternatives:
Put them in a Map<String, Object> which you put in the application scope. In EL, map values are accessible the usual Javabean way by ${map.key} or ${map['key.with.dots']}.
Use <un:useConstants> of the Unstandard taglib (maven2 repo he...