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Check for internet connection availability in Swift
... NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
request.timeoutInterval = 10.0
var response: NSURLResponse?
var data = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: nil) as NSData?
if let httpResponse = response as? NSHTTPU...
Pick a random element from an array
...
this produces the same random sequence each time run
– iTSangar
Apr 10 '15 at 5:28
1
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Is there any WinSCP equivalent for linux? [closed]
...rning from an old entry in the known_hosts file. Prior to that Thunar just timed out when trying to log in without any details as to why. So make sure you can ssh in cleanly without warnings first.
– Greg Chabala
Jun 26 '16 at 23:07
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How to send emails from my Android application?
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I've been using this since long time ago and it seems good, no non-email apps showing up. Just another way to send a send email intent:
Intent intent = new Intent(Intent.ACTION_SENDTO); // it's not ACTION_SEND
intent.putExtra(Intent.EXTRA_SUBJECT, "Subject...
How to send a message to a particular client with socket.io
... I'd suggest to not use this solution. I ended up wasting a lot of time trying to overcome the limitations of this approach. See @az7ar's solution and this explanation for why it's better.
– Daniel Que
Aug 13 '14 at 1:07
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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
...’s class initializer will run faster, the values might be treated as JIT-time constants, and the JIT might well have special support for streamlining enum classes.
Code which is really performance-sensitive uses the NDK, which was still new and unpolished when Android 1.5 was released. The NDK in ...
What is the difference between Scala's case class and class?
...making case classes mutable causes their equals and hashCode methods to be time variant.[1]
sepp2k already mentioned that case classes automatically generate equals and hashCode methods.
Also no one mentioned that case classes automatically create a companion object with the same name as the class...
Get the latest record from mongodb collection
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I need a query with constant time response
By default, the indexes in MongoDB are B-Trees. Searching a B-Tree is a O(logN) operation, so even find({_id:...}) will not provide constant time, O(1) responses.
That stated, you can also sort by the _id if ...
Amazon S3 direct file upload from client browser - private key disclosure
...RM action is sending the file directly to S3 - not via your server.
Every time one of your users wants to upload a file, you would create the POLICY and SIGNATURE on your server. You return the page to the user's browser. The user can then upload a file directly to S3 without going through your ser...
SQL Server: Make all UPPER case to Proper Case/Title Case
...te post in this thread but, worth looking. This function works for me ever time. So thought of sharing it.
CREATE FUNCTION [dbo].[fnConvert_TitleCase] (@InputString VARCHAR(4000) )
RETURNS VARCHAR(4000)
AS
BEGIN
DECLARE @Index INT
DECLARE @Char CHAR(1)
DECLARE @OutputString VARCHAR(255)
SET @Outpu...