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What is the difference between linear regression and logistic regression?
...gistic regression was introduced.
Source: http://gerardnico.com/wiki/data_mining/simple_logistic_regression
Outcome
In linear regression, the outcome (dependent variable) is continuous.
It can have any one of an infinite number of possible values.
In logistic regression, the outcome (dependen...
How to change height of grouped UITableView header?
...
Return CGFLOAT_MIN instead of 0 for your desired section height.
Returning 0 causes UITableView to use a default value. This is
undocumented behavior. If you return a very small number, you
effectively get a zero-height header.
S...
How to convert nanoseconds to seconds using the TimeUnit enum?
...:
long elapsedTime = end - start;
double seconds = (double)elapsedTime / 1_000_000_000.0;
If you use TimeUnit to convert, you'll get your result as a long, so you'll lose decimal precision but maintain whole number precision.
...
How to declare string constants in JavaScript? [duplicate]
...rs' implementations (and Node) have constants, used with const.
const SOME_VALUE = "Your string";
This const means that you can't reassign it to any other value.
Check the compatibility notes to see if your targeted browsers are supported.
Alternatively, you could also modify the first example,...
What is a regular expression which will match a valid domain name without a subdomain?
...many valid edge cases that I have missed):
^((?!-))(xn--)?[a-z0-9][a-z0-9-_]{0,61}[a-z0-9]{0,1}\.(xn--)?([a-z0-9\-]{1,61}|[a-z0-9-]{1,30}\.[a-z]{2,})$
When choosing a domain validation regex, you should see if the domain matches the following:
xn--stackoverflow.com
stackoverflow.xn--com
stackov...
Accessing private member variables from prototype-defined functions
...ns they're going to be public. So we just stick to naming conventions for _private fields.
Don't bother mixing Closures with Prototypes
I think you shouldn't mix closure variables with prototype methods. You should use one or the other.
When you use a closure to access a private variable, pro...
Injecting a mock into an AngularJS service
... () {
module('myModule');
});
beforeEach(inject(function (_injected_) {
mockInjectedProvider = mock(_injected_);
});
beforeEach(inject(function (_base_) {
baseProvider = _base_;
}));
it("injectedProvider should be mocked", function () {
mockInje...
How does Bluebird's util.toFastProperties function make an object's properties “fast”?
...es it slow.
assertFalse(%HasFastProperties(proto));
DoProtoMagic(proto, set__proto__);
// Making it a prototype makes it fast again.
assertTrue(%HasFastProperties(proto));
Reading and running this test shows us that this optimization indeed works in v8. However - it would be nice to see how.
If we ...
Get the first key name of a javascript object [duplicate]
...
If you decide to use Underscore.js you better do
_.values(ahash)[0]
to get value, or
_.keys(ahash)[0]
to get key.
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How to escape a JSON string to have it in a URL?
...
encodeURIComponent(JSON.stringify(object_to_be_serialised))
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