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How to construct a WebSocket URI relative to the page URI?
....href);
url.protocol = url.protocol.replace('http', 'ws');
url.href // => ws://www.example.com:9999/path/to/websocket
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Need to ZIP an entire directory using Node.js
...t Unicode characters in filenames as of now. Reported to github.com/ctalkington/node-archiver/issues/90.
– Eye
Aug 28 '14 at 9:35
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Private properties in JavaScript ES6 classes
...}
}
const instance = new Something();
console.log(instance.property); //=> undefined
console.log(instance.privateMethod); //=> undefined
console.log(instance.getPrivateMessage()); //=> hello world
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How to show a dialog to confirm that the user wishes to exit an Android Activity?
...(). This can happen if your main activity can be added to the back stack multiple times, or if you are manipulating your back stack history.
if(isTaskRoot()) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure you want to exit?")
.setCanc...
Check if $_POST exists
... is set and if value is not considered empty.
Examples:
$arr = [
'a' => null,
'b' => '',
'c' => 1
];
array_key_exists('a', $arr); // true
isset($arr['a']); // false
empty($arr['a']); // true
array_key_exists('b', $arr); // true
isset($arr['b']); // true
empty($arr['b']); // true
...
What is the difference between 'java', 'javaw', and 'javaws'?
...edirection works with javaw:
javaw -cp ... mypath.MyClass ... arguments 1>log.txt 2>err.txt
It means, if the Java application prints out anything via System.out or System.err, it is written to those files, as also with using java (without w). Especially on starting java, the JRE may write s...
What is the difference between currying and partial application?
...
function sum = curry(fold)(lambda(accum,e){e+accum}))(0);
function length = curry(fold)(lambda(accum,_){1+accum})(empty-list);
function reverse = curry(fold)(lambda(accum,e){concat(e,accum)})(empty-list);
/* ... */
@list = [1, 2, 3, 4]
sum(list) //returns 10
@f = fold(lambda(accum,e){e+accum}...
Read a file one line at a time in node.js?
...ead a large file one line at a time. I found a question on Quora that dealt with the subject but I'm missing some connections to make the whole thing fit together.
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How to restart Activity in Android
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public void reload() {
Intent intent = getIntent();
overridePendingTransition(0, 0);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
finish();
overridePendingTransition(0, 0);
startActivity(intent);
}
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Xcode doesn't see my iOS device but iTunes does
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@kramer65, it is now Window > Devices instead of Window > Organizer > Devices
– Matt
Jul 14 '17 at 4:37
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