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How to handle screen orientation change when progress dialog and background thread active?
...ges while the dialog is up (and the background thread is going). At this point the app either crashes, or deadlocks, or gets into a weird stage where the app does not work at all until all the threads have been killed.
...
Storing custom objects in an NSMutableArray in NSUserDefaults
...rchivedDataWithRootObject:objectArray] forKey:@"savedArray"];
As f3lix pointed out, you need to make your custom object comply to the NSCoding protocol. Adding methods like the following should do the trick:
- (void)encodeWithCoder:(NSCoder *)coder;
{
[coder encodeObject:label forKey:@"label...
MySQL Great Circle Distance (Haversine formula)
...ng PHP script that gets Longitude and Latitude values and then inputs them into a MySQL query. I'd like to make it solely MySQL. Here's my current PHP Code:
...
Multiple inputs with same name through POST in php
...nswer to my question, I choose it as THE answer. However, the answer from Interstellar_coder is good as well, but you've explained that this can potentially be a pitfall if used incorrectly. I will be limiting the maximum number of items and I will be doing a lot of validation on this form, so I s...
How to sort an IEnumerable
...implements IEnumerable<string>, or turn an IEnumerable<string> into a sortable collection first:
List<string> myList = myEnumerable.ToList();
myList.Sort();
Based on your comment:
_components = (from c in xml.Descendants("component")
let value = (string)c
...
Running PostgreSQL in memory only
...t to create a self-contained environment you can put the Postgres binaries into SVN (but it's more than just a single executable).
You will need to run initdb to setup your test database before you can do anything with this. This can be done from a batch file or by using Runtime.exec(). But note t...
Most efficient way to create a zero filled JavaScript array?
...
ES6 introduces Array.prototype.fill. It can be used like this:
new Array(len).fill(0);
Not sure if it's fast, but I like it because it's short and self-describing.
It's still not in IE (check compatibility), but there's a pol...
Design by contract using assertions or exceptions? [closed]
...
The point in assertions is not to correct errors, but to alert the programmer. Keeping them enabled in release builds is useless for that reason: What would you have gained by having an assert firing? The developer won't be able to...
Creating an Android trial application that expires after a fixed time period
... game with great results. The whole app would load, but the user can only interact with the dialog that is seen, there is a button on that dialog that takes the user directly to the purchase page for the game. Users don't seem to mind AFAIK since that game has been in the top 10 paid apps since th...
What is the most accurate way to retrieve a user's correct IP address in PHP?
...ES_RANGE) === false)
{
return false;
}
self::$ip = sprintf('%u', ip2long($ip)); // you seem to want this
return true;
}
Also your HTTP_X_FORWARDED_FOR snippet can be simplified from this:
// check for IPs passing through proxies
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])...