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How can I access and process nested objects, arrays or JSON?
...e.
// either `42` or the array
}
Depending on where the object comes from (and what you want to do), you might have to test in each iteration whether the property is really a property of the object, or it is an inherited property. You can do this with Object#hasOwnProperty [MDN].
As alternati...
What do REFRESH and MERGE mean in terms of databases?
...
REFRESH means "pull any state changes from the database into my representation". Cascading this is simple; it means that all associated entities are refreshed.
MERGE means something complex that approximates "save" but is more like "push this detached entity ba...
javax.faces.application.ViewExpiredException: View could not be restored
...do to redirect user to for example index.xhtml or login.xhtml and save him from seeing that error page/message?
10 Answers
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Should I avoid the use of set(Preferred|Maximum|Minimum)Size methods in Java Swing?
...Pane);
frmtest.pack();
// User's preference should be read from java.util.prefs.Preferences
frmtest.setSize(400, 300);
frmtest.setLocationRelativeTo(null);
frmtest.setVisible(true);
list.get(0).requestFocusInWindow();
}
private static class Fo...
Why generate long serialVersionUID instead of a simple 1L?
...ialization, causing deserialization to fail. The above comment was taken from Java Object Serialization Specification version 6.0
– user624558
Sep 24 '14 at 1:38
...
Maven: best way of linking custom external JAR to my project?
...ur local repository with the library jars then you should change the scope from system to compile.
If you are starting with maven I suggest to use maven directly not IDE plugins as it adds an extra layer of complexity.
As for the error, do you put the required jars on your classpath? If you are us...
CSV file written with Python has blank lines between each row
...em results in no effect. ie. it results in cross system compatible code.
From Python Docs:
On Windows, 'b' appended to the mode
opens the file in binary mode, so
there are also modes like 'rb', 'wb',
and 'r+b'. Python on Windows makes a
distinction between text and binary
files; the...
Default parameter for CancellationToken
... default(CancellationToken) instead. For example, see these search results from the source code of the Entity Framework.
– drowa
Feb 12 '15 at 23:15
21
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How do I use reflection to call a generic method?
...stead of the reflection API.
To use this technique the type must be known from the actual object (not just an instance of the Type class). Otherwise, you have to create an object of that type or use the standard reflection API solution. You can create an object by using the Activator.CreateInstance...
Where'd padding go, when setting background Drawable?
...xt and Button views, where I have a nice padding for them to space away from the text, but when I change the background with setBackgroundDrawable or setBackgroundResource that padding is lost forever.
...