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What are the differences between a clustered and a non-clustered index?
...clustered indexes should be set on a field that is normally incremental ie Id or Timestamp.
SQL Server will normally only use an index if its selectivity is above 95%.
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Spring Boot - parent pom when you already have a parent pom
...perties for quickly setting versions of dependencies that you want to override
configure some plugins with default configuration (principally the Spring Boot maven plugin). So those are the things you will have to do manually if you use your own parent.
Example provided in Spring Boot documentatio...
Ruby custom error classes: inheritance of the message attribute
...ld also add more arguments to the method signature, should you need.
Overriding #to_s Strategy not #to_str, it works differently
module ExternalService
class FailedCRUDError < ::StandardError
def to_s
'failed to crud with external service'
end
end
class FailedToCreateError...
How to determine equality for two JavaScript objects?
...es may not be enough, there may well be attributes which are not to be considered part of the object value. For example,
function MyClass(a, b)
{
var c;
this.getCLazy = function() {
if (c === undefined) c = a * b // imagine * is really expensive
return c;
}
}
...
Git fast forward VS no fast forward merge
...w us to perform fast forward and no fast fast forward branch merging. Any ideas when to use fast forward merge and when to use no fast forward merge?
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Why isn't textarea an input[type=“textarea”]?
...ferent types of things, and imply different issues (semantics) for client-side handling.
– Marc Andreessen, 11 October 1993
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Why are iframes considered dangerous and a security risk?
Why are iframes considered dangerous and a security risk? Can someone describe an example of a case where it can be used maliciously?
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Difference between a Seq and a List in Scala
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@huynhjl That's beside the point. I was drawing parallels between what exists in Java and what exists in Scala, and there just isn't any concept of mutable/immutable collections in Java.
– Daniel C. Sobral
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What's the difference between the atomic and nonatomic attributes?
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The last two are identical; "atomic" is the default behavior (note that it is not actually a keyword; it is specified only by the absence of nonatomic -- atomic was added as a keyword in recent versions of llvm/clang).
Assuming that you are ...
Spring Boot JPA - configuring auto reconnect
...erties up to 1.3
spring.datasource.testOnBorrow=true
spring.datasource.validationQuery=SELECT 1
As djxak noted in the comment, 1.4+ defines specific namespaces for the four connections pools Spring Boot supports: tomcat, hikari, dbcp, dbcp2 (dbcp is deprecated as of 1.5). You need to check which ...