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What are the disadvantages to declaring Scala case classes?
...
First the good bits:
Everything immutable by default
Yes, and can even be overridden (using var) if you need it
Getters automatically defined
Possible in any class by prefixing params with val
Decent toString() implementation
Yes, very useful, but doable by hand on a...
Google Espresso or Robotium [closed]
...nspect and interact with Activities under test.
At Google, we started out by using Robotium because it was more convenient than stock instrumentation (hats off to Robotium developers for making it so). However, it did not satisfy our need for a framework that made writing reliable tests easy for de...
How to select html nodes by ID with jquery when the id contains a dot?
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@Tomalak in comments:
since ID selectors must be preceded by a hash #, there should be no ambiguity here
“#id.class” is a valid selector that requires both an id and a separate class to match; it's valid and not always totally redundant.
The correct way to select a literal ...
How to check Oracle database for long running queries
..._hash_value
and s.status = 'ACTIVE'
and s.username <> 'SYSTEM'
order by s.sid,t.piece
/
This shows locks. Sometimes things are going slow, but it's because it is blocked waiting for a lock:
select
object_name,
object_type,
session_id,
type, -- Type or system/user lock
...
jQuery Set Select Index
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+1 - The second option worked for me. The chosen answer by John Kugelman did not work for me in IE7.
– P.Brian.Mackey
Jun 27 '11 at 17:44
2
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What's the meaning of interface{}?
I'm new to interfaces and trying to do SOAP request by github
6 Answers
6
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Interfaces with static fields in java for sharing 'constants'
... An example is the SwingConstants interface in Swing, which is implemented by dozens of classes that all "re-export" all of its constants (even the ones that they don't use) as their own.
But don't just take my word for it, Josh Bloch also says it's bad:
The constant interface pattern is a poor...
How to use base class's constructors and assignment operator in C++?
... 'D' contains no new member variables then the default versions (generated by the compiler should work just fine). The default Copy constructor will call the parent copy constructor and the default assignment operator will call the parent assignment operator.
But if your class 'D' contains resource...
What exactly does Perl's “bless” do?
...riented Perl: A Comprehensive Guide to Concepts and Programming Techniques by Damian Conway for useful examples) or even a reference to a file or directory handle (least common case).
The effect bless-ing has is that it allows you to apply special syntax to the blessed reference.
For example, if ...
How do I get the SharedPreferences from a PreferenceActivity in Android?
...te
According to Shared Preferences | Android Developer Tutorial (Part 13) by Sai Geetha M N,
Many applications may provide a way to capture user preferences on the
settings of a specific application or an activity. For supporting
this, Android provides a simple set of APIs.
Preference...