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Can I set null as the default value for a @Value in Spring?
...rhaps to Enum the switch is easier. Its also easier to unit test :)
EDIT: based on your comments on using enums and my opinion of not using null.
@Component
public class MyObject {
@Value("${crap:NOTSET}")
private Crap crap;
public enum Crap {
NOTSET,
BLAH;
}
}
...
Swift - class method which must be overridden by subclass
...tual" methods, is to have the subclass pass the "implementations" into the base class constructor as function objects:
class MyVirtual {
// 'Implementation' provided by subclass
let fooImpl: (() -> String)
// Delegates to 'implementation' provided by subclass
func foo() -> S...
Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
...hat detect_encoding is a method that could detect the encoding of a string based on language clues.
– Alastair McCormack
Mar 20 '18 at 10:56
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How can you strip non-ASCII characters from a string? (in C#)
...
For those who didn't catch it, this is a C# 4.0 LINQ-based solution. :)
– user29439
Jan 28 '10 at 20:49
7
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What exactly does @synthesize do?
...et using the dot notation: myObject.mapView. A property doesn't have to be based on an ivar, but most properties are. The @propertydeclaration simply tells the world that there is a property called mapView.
@synthesize mapView = mapView1;
This line tells the compiler to create a setter and getter ...
What is __gxx_personality_v0 for?
...
A quick grep of the libstd++ code base revealed the following two usages of __gx_personality_v0:
In libsupc++/unwind-cxx.h
// GNU C++ personality routine, Version 0.
extern "C" _Unwind_Reason_Code __gxx_personality_v0
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What is the difference between JOIN and UNION?
...lish it in standard SQL ? Maria DB has a command union join, but other databases don't. Thanks.
– Erran Morad
May 9 '14 at 18:27
add a comment
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Get first n characters of a string
...e beginning of the string
$string = substr($string,0,10).'...';
Update:
Based on suggestion for checking length (and also ensuring similar lengths on trimmed and untrimmed strings):
$string = (strlen($string) > 13) ? substr($string,0,10).'...' : $string;
So you will get a string of max 13 c...
Non-Singleton Services in AngularJS
...its easy to tell right away what services are singletons and what are not. Based on if an object is being newed up.
– j_walker_dev
Apr 10 '14 at 7:13
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Finding all cycles in a directed graph
...en if you wish you can generate combinations of simple cycles.
One of the baseline algorithms for finding all simple cycles in a directed graph is this: Do a depth-first traversal of all simple paths (those that do not cross themselves) in the graph. Every time when the current node has a successor...