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What is the parameter “next” used for in Express?
...r instance, you might look up the user in the database if an id was given, and assign it to req.user.
Below, you could have a route like:
app.get('/users', function(req, res) {
// check for and maybe do something with req.user
});
Since /users/123 will match the route in your example first, ...
What is the best way to call a script from another script?
...o. This answer goes beyond that, but definitely does answer the question—and then some.
– martineau
Nov 6 '17 at 17:15
...
How do I clear a search box with an 'x' in bootstrap 3?
...
To get something like this
with Bootstrap 3 and Jquery use the following HTML code:
<div class="btn-group">
<input id="searchinput" type="search" class="form-control">
<span id="searchclear" class="glyphicon glyphicon-remove-circle"></span>...
Exception thrown inside catch block - will it be caught again?
This may seem like a programming 101 question and I had thought I knew the answer but now find myself needing to double check. In this piece of code below, will the exception thrown in the first catch block then be caught by the general Exception catch block below?
...
rsync: how can I configure it to create target directory on server?
... rsync from local computer to server. On a directory that does not exist, and I want rsync to create that directory on the server first.
...
How to clean project cache in Intellij idea like Eclipse's clean?
...for your installed version. The location of this folder depends on your OS and version installed.
Windows Vista, 7, 8, 10
<SYSTEM DRIVE>\Users\<USER ACCOUNT NAME>\.<PRODUCT><VERSION>
Linux/Unix
~/.<PRODUCT><VERSION>
Mac OS
~/Library/Caches/<PRODUCT><V...
Dictionary returning a default value if the key does not exist [duplicate]
...ictionary, so you can just use:
dictionary.TryGetValue(key, out value);
and just ignore the return value. However, that really will just return default(TValue), not some custom default value (nor, more usefully, the result of executing a delegate). There's nothing more powerful built into the fra...
How do I make a matrix from a list of vectors in R?
...
So the difference between this and the standard rbind() is that do.call() passes each list item as a separate arg - is that right? do.call(rbind,a) is equivalent to rbind(a[[1]], a[[2]]... a[[10]])?
– Matt Parker
Aug...
What does the PHP error message “Notice: Use of undefined constant” mean?
...It's not "bizarre"... It's "backward compatible". PHP originally allowed and even promoted using unquoted strings as keys. (Okay, maybe it is still "bizarre". :-)
– Brian White
Oct 12 '12 at 19:52
...
std::unique_ptr with an incomplete type won't compile
...l is complete
};
because otherwise the compiler generates a default one, and it needs a complete declaration of foo::impl for this.
If you have template constructors, then you're screwed, even if you don't construct the impl_ member:
template <typename T>
foo::foo(T bar)
{
// Here the...