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Why does this async action hang?
...lock? Imagine you just have this code:
var task = dataSource.ExecuteAsync(_ => 42);
var result = task.Result;
So the first line kicks off the asynchronous work. The second line then blocks the UI thread. So when the runtime wants to run the "return result" line back on the UI thread, it can't ...
How to initialize log4j properly?
...
Hi a3. 14_Infinity where i should use this? i can't understand. even i have referred more answers for this issue. please help me
– Ravi Potnuru
Jul 27 '17 at 10:06
...
How to get the path of a running JAR file?
...he following: "a" through "z", "A" through "Z", "0" through "9", and "-", "_", ".", and "*". The character "%" is allowed but is interpreted as the start of a special escaped sequence.
...
There are two possible ways in which this decoder could deal with illegal strings. It could either le...
Search code inside a Github project
...r.com/#!/github/status/197070106768048128), like I did (twitter.com/#!/VonC_/status/197565733830541313)
– VonC
May 17 '12 at 11:25
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How to free memory in Java?
...e (hence the UseG1GC argument above).
VM arguments
Update: For java 1.8.0_73 I have seen the JVM occasionally release small amounts with the default settings. Appears to only do it if ~70% of the heap is unused though.. don't know if it would be more aggressive releasing if the OS was low on physi...
How to add a border just on the top side of a UIView
... = color
addSublayer(border)
}
private func addCorner(_ corner: Corner, thickness: CGFloat, color: CGColor) {
// Set default to top left
let width = frame.size.width; let height = frame.size.height
var x = cornerRadius
var startAngle: CGFloat = .p...
Checking network connection
...
Perhaps you could use something like this:
import urllib2
def internet_on():
try:
urllib2.urlopen('http://216.58.192.142', timeout=1)
return True
except urllib2.URLError as err:
return False
Currently, 216.58.192.142 is one of the IP addresses for google.com. ...
Turning live() into on() in jQuery
...ould be something like
$(document.body).on('change', 'select[name^="income_type_"]', function() {
alert($(this).val());
});
Although it is better if you bind the event handler as close as possible to the elements, that is, to an element being closer in the hierarchy.
Update: While answering ...
Is an index needed for a primary key in SQLite?
...
It's mention in the sqlite_master table with a name starting with sqlite_autoindex_.
– dan04
Jul 31 '10 at 19:17
2
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What's the difference between using INDEX vs KEY in MySQL?
... at table info in the latest version of SQLYog it shows KEY keyname (column_name) when I created the table with INDEX keyname (column_name). The fact that it is a synonym explains it perfectly.
– crmpicco
Apr 2 '14 at 10:10
...