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How can I hash a password in Java?
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You can actually use a facility built 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("pas...
How to reference constants in EL?
How do you reference an constants with EL on a JSP page?
12 Answers
12
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Search and replace in bash using regular expressions
...sion will match all occurrences in the input.
You can also pick your favorite tool using this method, i.e. perl, awk, e.g.:
echo "$MYVAR" | perl -pe 's/[a-zA-Z]/X/g and s/[0-9]/N/g'
This may allow you to do more creative matches... For example, in the snip above, the numeric replacement would n...
Removing viewcontrollers from navigation stack
I have a navigation stack, with say 5 UIViewControllers. I want to remove the 3rd and 4th viewcontrollers in the stack on the click of a button in the 5th viewcontroller. Is it possible to do this? If so how?
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Google Maps API v3: Can I setZoom after fitBounds?
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Edit: See Matt Diamond's comment below.
Got it! Try this:
map.fitBounds(bounds);
var listener = google.maps.event.addListener(map, "idle", function() {
if (map.getZoom() > 16) map.setZoom(16);
google.maps.event.remov...
android.content.res.Resources$NotFoundException: String resource ID #0x0
...setText - one takes a String and one takes an int resource id. If you pass it an integer it will try to look for the corresponding string resource id - which it can't find, which is your error.
I guess app.getTotalDl() returns an int. You need to specifically tell setText to set it to the String va...
How do I add a Maven dependency in Eclipse?
...'t know how to use Maven at all. I've been developing for a couple years with Eclipse and haven't yet needed to know about it. However, now I'm looking at some docs that suggest I do the following:
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How to redirect output with subprocess in Python?
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UPDATE: os.system is discouraged, albeit still available in Python 3.
Use os.system:
os.system(my_cmd)
If you really want to use subprocess, here's the solution (mostly lifted from the documentation for subprocess):
p = subprocess.Popen(my_cmd, shell=True)...
How to join int[] to a character separated string in .NET?
...= string.Join(",", ints.Select(x => x.ToString()).ToArray());
Console.WriteLine(result); // prints "1,2,3,4,5"
EDIT: As of (at least) .NET 4.5,
var result = string.Join(",", ints.Select(x => x.ToString()).ToArray());
is equivalent to:
var result = string.Join(",", ints);
EDIT:
I see ...
Reject binary with state waiting for review (can't find reject binary button)
I want to reject binary which is waiting for review and when I go to the path that Developer Guide specifies I can't find the button to reject the binary.
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