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Why is there no String.Empty in Java?
...n the number of up-votes it received.
It's about the symmetry, without it APIs are harder to use for humans. Early Java SDKs notoriously ignored the rule and now it's kind of too late. Here are a few examples on top of my head, feel free to chip in your "favorite" example:
BigDecimal.ZERO, but n...
Using async-await on .net 4
...ut I have not tried that. The 4.5 profile is a strict super-set of the 4.0 API. Perhaps give it a shot and report back.
EDIT: It looks like perhaps you can use the Visual Studio Async CTP in production now
Here is what it says on the download page:
Includes a new EULA for production use. Note ...
Rails extending ActiveRecord::Base
...r < ActiveRecord::Base you will have: FooBar.bar and FooBar#foo
http://api.rubyonrails.org/classes/ActiveSupport/Concern.html
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Share variables between files in Node.js?
.../ File: constants.js
module.exports = {
appName: 'My neat app',
currentAPIVersion: 3
};
And use it this way
// File: config/routes.js
var constants = require('../constants');
module.exports = function(app, passport, auth) {
var apiroot = '/api/v' + constants.currentAPIVersion;
...
app.p...
Efficiently updating database using SQLAlchemy ORM
...
@Ken, no, it won't. See the API doc for Query.update docs.sqlalchemy.org/en/13/orm/…. Instead you have an event for after_bulk_update docs.sqlalchemy.org/en/13/orm/…
– TrilceAC
May 26 at 11:11
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How to detect online/offline event cross-browser?
...ethods:
https://developer.mozilla.org/en/Online_and_offline_events
"If the API isn't implemented in the browser, you can use other signals to detect if you are offline including listening for AppCache error events and responses from XMLHttpRequest"
This links to an example of the "listening for AppC...
Which characters make a URL invalid?
...ISyntaxException in the Java java.net.URI constructor so a URL like http://api.google.com/q?exp=a|b is not allowed and must be encoded instead as http://api.google.com/q?exp=a%7Cb if using Java with a URI object instance.
sh...
Regular expression for floating point numbers
...
TL;DR
Use [.] instead of \. and [0-9] instead of \d to avoid escaping issues in some languages (like Java).
Thanks to the nameless one for originally recognizing this.
One relatively simple pattern for matching a floating point number is
[+-]?([0-9]*[.])?[0-9]+
This will match:
12...
junit & java : testing non-public methods [duplicate]
...o test public methods, because you should only be unit-testing your public API, and that by doing so, you should be covering the code in your non-public methods. Your mileage may vary; I find that this is sometimes the case and sometimes not.
With that said, there are a couple of ways to test non-...
Check orientation on Android phone
... @user3441905, yes they are. Use getSize(Point outSize) instead. I'm using API 23.
– WindRider
Dec 2 '15 at 11:13
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