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Replace a value if null or undefined in JavaScript
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275
Here’s the JavaScript equivalent:
var i = null;
var j = i || 10; //j is now 10
Note that ...
How can I hash a password in Java?
...uilt in to the Java runtime to do this. The SunJCE in Java 6 supports PBKDF2, which is a good algorithm to use for password hashing.
byte[] salt = new byte[16];
random.nextBytes(salt);
KeySpec spec = new PBEKeySpec("password".toCharArray(), salt, 65536, 128);
SecretKeyFactory f = SecretKeyFactory.g...
Matplotlib Legends not working
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You should add commas:
plot1, = plt.plot(a,b)
plot2, = plt.plot(a,c)
The reason you need the commas is because plt.plot() returns a tuple of line objects, no matter how many are actually created from the command. Without the comma, "plot1" and "plot2" are tuples instead of...
NodeJS - What does “socket hang up” actually mean?
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24 Answers
24
Active
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Count immediate child div elements using jQuery
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12 Answers
12
Active
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What is the difference between an Azure Web Site and an Azure Web Role
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212
Web Roles give you several features beyond Web Apps (formerly Web Sites):
Ability to run ele...
S3 Static Website Hosting Route All Paths to Index.html
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324
It's very easy to solve it without url hacks, with CloudFront help.
Create S3 bucket, for exa...
How to link a Facebook app with an existing fan page
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214
It is possible. I had the same problem. What you need to do is the following:
Categorize you...
How can I read a text file without locking it?
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121
You need to make sure that both the service and the reader open the log file non-exclusively. T...
How to make PowerShell tab completion work like Bash
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