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Best way to represent a fraction in Java?
...or denominator.
* Denominator will always be positive (so sign is carried by numerator,
* and a zero-denominator is impossible).
*/
public final class BigFraction extends Number implements Comparable<BigFraction>
{
private static final long serialVersionUID = 1L; //because Number is Seria...
PUT vs. POST in REST
...e of the target resource be
created or replaced with the state defined by the representation
enclosed in the request message payload.
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HTTPS connections over proxy servers
...tion and
returns an ad-hoc generated(possibly
weak) certificate Ka,
signed by a certificate authority
that is unconditionally trusted by
the client.
Proxy starts HTTPS session to target
Proxy verifies integrity of SSL
certificate; displays error if the
cert is not valid.
Proxy streams content, decry...
How do you push a tag to a remote repository using Git?
...avoided.
Git 2.4 has added the push.followTags option to turn that flag on by default which you can set with:
git config --global push.followTags true
or by adding followTags = true to the [push] section of your ~/.gitconfig file.
...
Immutable class?
... to make an object immutable?
In general, an immutable object can be made by defining a class which does not have any of its members exposed, and does not have any setters.
The following class will create an immutable object:
class ImmutableInt {
private final int value;
public ImmutableInt(...
Should I always use a parallel stream when possible?
...threads takes a significant amount of time. I would use sequential streams by default and only consider parallel ones if
I have a massive amount of items to process (or the processing of each item takes time and is parallelizable)
I have a performance problem in the first place
I don't already run...
Adding 'serial' to existing column in Postgres
...LTER TABLE foo ALTER COLUMN a SET NOT NULL;
ALTER SEQUENCE foo_a_seq OWNED BY foo.a; -- 8.2 or later
SELECT MAX(a) FROM foo;
SELECT setval('foo_a_seq', 5); -- replace 5 by SELECT MAX result
INSERT INTO foo (b) VALUES('teste');
INSERT INTO bar (b) VALUES('teste');
SELECT * FROM foo;
SELECT * F...
What is meant by Scala's path-dependent types?
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
Get elements by attribute when querySelectorAll is not available without using libraries?
...
You could write a function that runs getElementsByTagName('*'), and returns only those elements with a "data-foo" attribute:
function getAllElementsWithAttribute(attribute)
{
var matchingElements = [];
var allElements = document.getElementsByTagName('*');
for (var i...
Refresh a page using PHP
How can I refresh a page using PHP periodically? If I can not do it by PHP, what is the best recommended scenario?
13 Answe...