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Check whether an input string contains a number in javascript
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You can do this using javascript. No need for Jquery or Regex
function isNumeric(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
While implementing
var val = $('yourinputelement').val();
if(isNumeric(val)) { alert('number'); }
e...
How can I include raw JSON in an object using Jackson?
I am trying to include raw JSON inside a Java object when the object is (de)serialized using Jackson. In order to test this functionality, I wrote the following test:
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How to output only captured groups with sed?
... "modern" or "extended" regular expressions that look a lot closer to Perl/Java/JavaScript/Go/whatever flavors. (Compare to grep -E or egrep.) The default syntax has those strange escaping rules and is considered "obsolete". For more info on the differences between the two, run man 7 re_format.
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Best way to create enum of strings?
... Strings(final String text) {
this.text = text;
}
/* (non-Javadoc)
* @see java.lang.Enum#toString()
*/
@Override
public String toString() {
return text;
}
}
Alternatively, you can create a getter method for text.
You can now do Strings.STRING_ONE.toS...
HashMap to return default value for non-found keys?
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[Update]
As noted by other answers and commenters, as of Java 8 you can simply call Map#getOrDefault(...).
[Original]
There's no Map implementation that does this exactly but it would be trivial to implement your own by extending HashMap:
public class DefaultHashMap<K,V> e...
Is there a method that works like start fragment for result?
...aredViewModel = ViewModelProviders.of(activity).get(SharedViewModel::class.java)
}
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.fragment_first...
How to Correctly Use Lists in R?
...eady know, is the standard way to replicate the 'switch' statement in C++, Java, etc. in languages that don't have one; probably a good way to do this in R when i need to). +1
– doug
Jan 12 '10 at 23:30
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In C++, what is a virtual base class?
...hould be aware to use multiple inheritance correctly, instead of going the Java way and conclude "Multiple inheritance is 100% evil, let's do that with interfaces".
– paercebal
Oct 30 '10 at 6:38
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Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...1;
f = f*n;
end
disp(['n! = ' num2str(f)])
Btw, the for-each loop in Java (and possibly other languages) produces unspecified behavior when the data structure is modified during iteration. If you need to modify the data structure, you should use an appropriate Iterator instance which allows th...
Spring RestTemplate timeout
... The above code doesn't work in latest Spring. It gives ClassCastException java.lang.ClassCastException: org.springframework.http.client.InterceptingClientHttpRequestFactory cannot be cast to org.springframework.http.client.HttpComponentsClientHttpRequestFactory
– comiventor
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