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Throw keyword in function's signature
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No, it is not considered good practice. On the contrary, it is generally considered a bad idea.
http://www.gotw.ca/publications/mill22.htm goes into a lot more detail about why, but the problem is partly that the compiler is unable to enforce this, so it has to be checked at runtime, which i...
What is the use of the %n format specifier in C?
...f characters printed thus far to an int variable), but so far no one has really given an example of what use it has. Here is one:
int n;
printf("%s: %nFoo\n", "hello", &n);
printf("%*sBar\n", n, "");
will print:
hello: Foo
Bar
with Foo and Bar aligned. (It's trivial to do that with...
“NODE_ENV” is not recognized as an internal or external command, operable command or batch file
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@krozero try installing all packages again that might help you
– Hanzla Habib
Jul 10 at 5:03
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Is it possible to cache POST methods in HTTP?
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The corresponding RFC 2616 in section 9.5 (POST) allows the caching of the response to a POST message, if you use the appropriate headers.
Responses to this method are not cacheable, unless the response
includes appropriate Cache-Control or Expires header fields. Howe...
C++11 rvalues and move semantics confusion (return statement)
...equivalent to your first. The std::move on tmp is unnecessary and can actually be a performance pessimization as it will inhibit return value optimization.
The best way to code what you're doing is:
Best practice
std::vector<int> return_vector(void)
{
std::vector<int> tmp {1,2,3,4,5...
Handling colon in element ID with jQuery
...uff(id){
var jEle = $("#" + id); //is not safe, since id might be "foo:bar:baz" and thus fail.
//You would first have to look for ":" in the id string, then replace it
var jEle = $(document.getElementById(id)); //forget about the fact
//that the id string might contain...
How can I replace a newline (\n) using sed?
...ns not to do it on the last line as there should be one final newline).
Finally the substitution replaces every newline with a space on the pattern space (which is the whole file).
Here is cross-platform compatible syntax which works with BSD and OS X's sed (as per @Benjie comment):
sed -e ':a' -...
Does ruby have real multithreading?
...ing
models.
(Unfortunately, only two of those 11 implementations are actually
ready for production use, but by the end of the year that number
will probably go up to four or five.) (Update: it's now 5: MRI, JRuby, YARV (the interpreter for Ruby 1.9), Rubinius and IronRuby).
The first implement...
javax.faces.application.ViewExpiredException: View could not be restored
...ession cookie is not maintained anymore for some reason in browser, or by calling HttpSession#invalidate() in server, or due a server specific bug with session cookies as known in WildFly), then the serialized view state is not available anymore in the session and the enduser will get this exception...
How to add/update an attribute to an HTML element using JavaScript?
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What seems easy is actually tricky if you want to be completely compatible.
var e = document.createElement('div');
Let's say you have an id of 'div1' to add.
e['id'] = 'div1';
e.id = 'div1';
e.attributes['id'] = 'div1';
e.createAttribute('id','di...