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Explain the use of a bit vector for determining if all characters are unique
...his (not too familiar with bit vectors). Here is the code given. Could someone please walk me through this?
12 Answers
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Django Server Error: port is already in use
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So you try to start the server again, while one is already running? That won't work as the first one will be using the HTTP port. You must kill or terminate the first one, before trying to run again (at least run it on the same port).
– Some progr...
How do popular apps authenticate user requests from their mobile app to their server?
...Answer, As, peterpan stated, its is a token based way of authentication is one time thing and out of the equation.These tokens are expired or that power is given to the developer in some cases.
The interesting thing behind this is that, resource access scope can be defined rather than allowing the...
How do you embed binary data in XML?
...SAX parser at the receiving end to get the data back out of the messages. One of the requirements is to embed binary data in an XML message, but SAX doesn't like this. Does anyone know how to do this?
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MySQL root access from all hosts
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@Scriptlabs, chances are there are more than one entries in user table with a host of 'localhost'. And more than one row with root, including root.localhost, root.127.0.0.1, root.::1. So you are better off adding a separate user rather than updating, which is why I am d...
Getting all names in an enum as a String[]
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Here's one-liner for any enum class:
public static String[] getNames(Class<? extends Enum<?>> e) {
return Arrays.stream(e.getEnumConstants()).map(Enum::name).toArray(String[]::new);
}
Pre Java 8 is still a one-lin...
What is Persistence Context?
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can one PersisnteceContext have any EntityManager instances? And can one Entity Manager have any PersistenceContext? PersisntenceContext is only one for all application?
– Roberto
Feb 6 '1...
Android getting value from selected radiobutton
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In case, if you want to do some job on the selection of one of the radio buttons (without having any additional OK button or something), your code is fine, updated little.
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstance...
How do I do string replace in JavaScript to convert ‘9.61’ to ‘9:61’?
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This won't work if we try to replace more than one value at a time. :(
– vissu
May 28 '12 at 13:06
56
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Track all remote git branches as local branches
...-v HEAD | grep -v master`; do git branch --track ${i#remotes/origin/} $i; done
credits: Val Blant, elias, and Hugo
before git 1.9.1
Note: the following code if used in later versions of git (>v1.9.1) causes
(bug) All created branches to track master
(annoyance) All created local branch names...