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What is scope/named_scope in rails?
...a collection. Sounds complicated? It isn't. Imagine this:
You have Users. Now, some of those Users are subscribed to your newsletter. You marked those who receive a newsletter by adding a field to the Users Database (user.subscribed_to_newsletter = true). Naturally, you sometimes want to get those ...
How can I initialise a static Map?
...
Jordan: it is an old topic now but I suspect @Luke was trying to use a string as a key in a map that had a different key type, e.g. Map<Integer, String>.
– Miserable Variable
Jan 3 '12 at 23:53
...
Moving average or running mean
... each position in the window, are sometimes called the convolution kernel. Now, the arithmetic mean of N values is (x_1 + x_2 + ... + x_N) / N, so the corresponding kernel is (1/N, 1/N, ..., 1/N), and that's exactly what we get by using np.ones((N,))/N.
Edges
The mode argument of np.convolve speci...
Detect changes in the DOM
...age event queue
var stack = [];
function callback() {
var now = +new Date();
if (now - last > delay) {
for (var i = 0; i < stack.length; i++) {
stack[i]();
}
last = now;
}
}
// Public interface
va...
What's the difference between window.location= and window.location.replace()?
...)
This code is perfectly correct syntax-wise, logic wise, type-wise
you know the only thing wrong with it?
it has location instead of location.href
what about this
var mystring = location = "#/some/spa/route"
what is the value of mystring? does anyone really know without doing some test. No ...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
...+ _) // invalid, A* vararg parameter
However, there’s more you need to know to better grasp these rules.
Increased compile checking with parens
The authors of Spray recommend round parens because they give increased compile checking. This is especially important for DSLs like Spray. By using pa...
Unicode characters in URLs
... You can use the unencoded UTF-8 URLs, namely IRIs, in HTML5 documents by now. If you do that, all major browsers will understand it and display it correctly in their address bar.
– Oliver
Oct 23 '13 at 12:54
...
(Mac) -bash: __git_ps1: command not found
... @designer84: thanks for the extra information - I think it's clear now what the problem is, and I've updated my answer with an explanation.
– Mark Longair
Oct 13 '12 at 19:41
...
Ignore whitespace in HTML [duplicate]
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Apparently that property has been renamed a lot; as of now, the page says "Major Changes...February 2011...Renamed ‘white-space-collapsing’ to ‘bikeshedding’."
– ysth
Jun 28 '11 at 19:08
...
Difference between an API and SDK
...r the electrical wiring in your house. Anything* can use it as long as it knows how to interface. You can even buy off-the-shelf software to use a particular API, just as you can buy off the shelf telephone equipment or devices that plug into the AC wiring in your house.
an SDK is implementation too...