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Boolean operators && and ||
...alue a; if it didn't short-circuit, as & and | don't, it would give an error.
a
# Error: object 'a' not found
TRUE || a
# [1] TRUE
FALSE && a
# [1] FALSE
TRUE | a
# Error: object 'a' not found
FALSE & a
# Error: object 'a' not found
Finally, see section 8.2.17 in The R Inferno, ti...
New features in java 7
...tiple exception catching
this:
} catch (FirstException ex) {
logger.error(ex);
throw ex;
} catch (SecondException ex) {
logger.error(ex);
throw ex;
}
becomes:
} catch (FirstException | SecondException ex) {
logger.error(ex);
throw ex;
}
SafeVarargs
this:
@Suppre...
Infinite Recursion with Jackson JSON and Hibernate JPA issue
...rialized, in order to avoid the infite loop that causes your stackoverflow error.
So, Jackson takes the forward part of the reference (your Set<BodyStat> bodyStats in Trainee class), and converts it in a json-like storage format; this is the so-called marshalling process. Then, Jackson looks ...
Removing the fragment identifier from AngularJS urls (# symbol)
...pushState){
//$locationProvider.html5Mode(true); will cause an error $location in HTML5 mode requires a tag to be present! Unless you set baseUrl tag after head tag like so: <head> <base href="/">
// to know more about setting base URL visit: https://docs.angularjs...
How do I remove/delete a folder that is not empty?
I am getting an 'access is denied' error when I attempt to delete a folder that is not empty. I used the following command in my attempt: os.remove("/folder_name") .
...
What is a NullPointerException, and how do I fix it?
...is appropriate to throw the NullPointerException because it's a programmer error and the programmer will need that information for debugging purposes. Please include the name of the object variable in the exception message, like
Objects.requireNonNull(a, "a");
Alternatively, there may be cases whe...
Could not establish trust relationship for SSL/TLS secure channel — SOAP
...CertificateValidationCallback =
((sender, certificate, chain, sslPolicyErrors) => true);
// trust sender
System.Net.ServicePointManager.ServerCertificateValidationCallback
= ((sender, cert, chain, errors) => cert.Subject.Contains("YourServerName"));
// validate cert by ca...
YAML current date in rmarkdown
...sion, e.g.
date: "`r format(Sys.time(), '%d %B, %Y')`"
Then the parsing error will be gone, and the date will be generated in the markdown output so Pandoc can use the value from Sys.time().
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JPA and Hibernate - Criteria vs. JPQL or HQL
...r Criteria to HQL because it's safer to the programmer, diminishing coding errors - compilation on the HQL string is not validated.
– nuno
Jul 31 '14 at 8:37
...
Accessing MVC's model property from Javascript
...
What do you know, I've got the same error in my various projects as well. Just ignore it; it's Visual Studio trying to help, but, it's wrong in this case. The resulting HTML and script that gets sent to the browser is correct.
– Justin H...