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Unittest setUp/tearDown for several tests
... is fired at the beginning/end of a scenario of tests? The functions setUp and tearDown are fired before/after every single test.
...
What are the rules for JavaScript's automatic semicolon insertion (ASI)?
...ing token is }.
When the end of the input stream of tokens is encountered and the parser is unable to parse the input token stream as a single complete Program, then a semicolon is automatically inserted at the end of the input stream.
e.g.:
a = b
++c
is transformed to:
a = b;
++c...
How to append data to div using JavaScript?
...the user, you've just introduced a security vulnerabilty. Better to use @Chandu's answer below.
– David Given
Feb 13 '16 at 22:50
9
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How to use Git Revert
...tion(+), 1 deletion(-)
In this example the commit history has two commits and the last one is a mistake. Using git revert:
$ git revert HEAD
[master 1db4eeb] Revert "bad update"
1 file changed, 1 insertion(+), 1 deletion(-)
There will be 3 commits in the log:
$ git log --oneline
1db4eeb Revert "b...
I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it
...ASP.Net web application gets a Session lock at the beginning of a request, and then releases it at the end of the request!
...
Understanding implicit in Scala
I was making my way through the Scala playframework tutorial and I came across this snippet of code which had me puzzled:
...
Loading cross-domain endpoint with AJAX
...etrieve data from a different domain, subdomain, port, or protocol.
Script and JSONP requests are not subject to the same origin policy restrictions.
There are some ways to overcome the cross-domain barrier:
CORS Proxy Alternatives
Ways to circumvent the same-origin policy
Breaking The Cross Dom...
Is volatile expensive?
...LoadLoad or a LoadStore barrier. Further down the page I see that LoadLoad and LoadStore are effectively no-ops on X86 CPUs. Does this mean that volatile read operations can be done without a explicit cache invalidation on x86, and is as fast as a normal variable read (disregarding the reordering co...
Why java.util.Optional is not Serializable, how to serialize the object with such fields
...The short answer is that the Java Lambda (JSR-335) expert group considered and rejected it. That note, and this one and this one indicate that the primary design goal for Optional is to be used as the return value of functions when a return value might be absent. The intent is that the caller immedi...
Is a DIV inside a TD a bad idea?
... using tables for layout. (Some people never use tables for layout though, and I happen to be one of them.)
If you use a div in a td you will however get in a situation where it might be hard to predict how the elements will be sized. The default for a div is to determine its width from its parent,...