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How to deal with a slow SecureRandom generator?
... SecureRandom can be very slow. If it uses /dev/random on Linux, it can block waiting for sufficient entropy to build up. How do you avoid the performance penalty?
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How do I change the color of radio buttons?
... background-color: #d1d3d1;
content: '';
display: inline-block;
visibility: visible;
border: 2px solid white;
}
input[type='radio']:checked:after {
width: 15px;
height: 15px;
border-radius: 15px;
top: -2px;
...
Get user profile picture by Id
...k, Instagram, and gravatar. It has libraries for iOS, Android, Ruby, Node, PHP, Python, and JavaScript.
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Can't update Macports (with Mac OS X Mavericks)
...oing a fresh installation of MacPorts from http://www.macports.org/install.php. Now I can run the selfupdate command without error and install other ports.
The error I were seeing was below, it seems the same problem as Yo Sophia has pointed out:
$ sudo port selfupdate
Password:
---> Updating ...
How using try catch for exception handling is best practice
...hat exception handling should never hide issues. This means that try-catch blocks should be extremely rare.
There are 3 circumstances where using a try-catch makes sense.
Always deal with known exceptions as low-down as you can. However, if you're expecting an exception it's usually better practi...
filtering NSArray into a new NSArray in Objective-C
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NSPredicate is dead, long live blocks! cf. my answer below.
– Clay Bridges
Oct 19 '11 at 23:09
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No increment operator (++) in Ruby? [duplicate]
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I don't think that notation is available because—unlike say PHP or C—everything in Ruby is an object.
Sure you could use $var=0; $var++ in PHP, but that's because it's a variable and not an object. Therefore, $var = new stdClass(); $var++ would probably throw an error.
I'm not a R...
WaitAll vs WhenAll
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Task.WaitAll blocks the current thread until everything has completed.
Task.WhenAll returns a task which represents the action of waiting until everything has completed.
That means that from an async method, you can use:
await Task.Whe...
text-overflow: ellipsis not working
...space: nowrap;
text-overflow: ellipsis;
width: 100px;
display: block;
overflow: hidden
}
body {
overflow: hidden;
}
span {
border: solid 2px blue;
white-space: nowrap;
text-overflow: ellipsis;
width: 100px;
display: block;
overflow: hidden
}
<spa...
Format bytes to kilobytes, megabytes, gigabytes
... return round($bytes, $precision) . ' ' . $units[$pow];
}
(Taken from php.net, there are many other examples there, but I like this one best :-)
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