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When to use next() and return next() in Node.js
... return next() is to ensure that the execution stops after triggering the callback.
If you don't do it, you risk triggering the callback a second time later, which usually has devastating results. Your code is fine as it is, but I would rewrite it as:
app.get('/users/:id?', function(req, res, next...
Difference between final static and static final
...
No difference at all. According to
8.3.1 - Classes - Field Modifiers of the Java Language Specification,
If two or more (distinct) field modifiers appear in a field declaration, it is customary, though not required, that they appear in t...
Jquery .on() submit event
... performance than $('form.remember').on('submit'. It now has to listen for all submit events in the document. It's much better to restrict the scope a little than listen on document, if possible
– Liam
Nov 4 '14 at 10:03
...
Where to place $PATH variable assertions in zsh?
...'t listed in any zsh documentation I can find.
This turns out to be partially incorrect: /etc/profile may be sourced by zsh. However, this only occurs if zsh is "invoked as sh or ksh"; in these compatibility modes:
The usual zsh startup/shutdown scripts are not executed. Login shells source /e...
Output array to CSV in Ruby
...enerate_line(row) }.join("")
#=> "a1,a2,a3\nb1,b2,b3\nc1,c2,c3\n"
Do all of the above and save to a csv, in one line.
File.open("ss.csv", "w") {|f| f.write(rows.inject([]) { |csv, row| csv << CSV.generate_line(row) }.join(""))}
NOTE:
To convert an active record database to csv would...
What are the complexity guarantees of the standard containers?
...found the nice resource Standard C++ Containers. Probably this is what you all looking for.
VECTOR
Constructors
vector<T> v; Make an empty vector. O(1)
vector<T> v(n); Make a vector with N elements. ...
Select records from NOW() -1 Day
... MySQL statement to order records (through a date stamp) by >= NOW() -1 so all records from the day before today to the future are selected?
...
Bootstrap full-width text-input within inline-form
...a
width on the form controls used within.
The default width of 100% as all form elements gets when they got the class form-control didn't apply if you use the form-inline class on your form.
You could take a look at the bootstrap.css (or .less, whatever you prefer) where you will find this part...
Does static constexpr variable inside a function make sense?
...n with static const integers.)
The C++ object model (§1.9) requires that all objects other than bit-fields occupy at least one byte of memory and have addresses; furthermore all such objects observable in a program at a given moment must have distinct addresses (paragraph 6). This does not quite r...
How to Copy Contents of One Canvas to Another Canvas Locally
I'd like to copy ALL contents of one canvas and transfer them to another all on the client-side. I would think that I would use the canvas.toDataURL() and context.drawImage() method to implement this but I am running into a few issues.
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