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Interface defining a constructor signature?
It's weird that this is the first time I've bumped into this problem, but:
18 Answers
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Role/Purpose of ContextLoaderListener in Spring?
...Listener entry in my web.xml file. But could not figure out how exactly it helps a developer?
15 Answers
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How to automatically convert strongly typed enum into int?
... can be converted into integer type, while strongly typed enums can not do it without a cast.
11 Answers
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MongoDB drop every database
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you can create a javascript loop that do the job and then execute it in the mongoconsole.
var dbs = db.getMongo().getDBNames()
for(var i in dbs){
db = db.getMongo().getDB( dbs[i] );
print( "dropping db " + db.getName() );
db.dropDatabase();
}
save it to dropall.js and then ex...
Why would I use Scala/Lift over Java/Spring? [closed]
I know this question is a bit open but I have been looking at Scala/Lift as an alternative to Java/Spring and I wonder what are the real advantages that Scala/Lift has over it. From my perspective and experience, Java Annotations and Spring really minimizes the amount of coding that you have to do f...
How to use SSH to run a local shell script on a remote machine?
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If Machine A is a Windows box, you can use Plink (part of PuTTY) with the -m parameter, and it will execute the local script on the remote server.
plink root@MachineB -m local_script.sh
If Machine A is a Unix-based system, you can use:
ssh root@MachineB 'bash -s' < local_script.sh
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Using `textField:shouldChangeCharactersInRange:`, how do I get the text including the current typed
...ouldChangeCharactersInRange gets called before text field actually changes its text, that's why you're getting old text value. To get the text after update use:
[textField2 setText:[textField1.text stringByReplacingCharactersInRange:range withString:string]];
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Concurrent vs serial queues in GCD
...A simple example: you have a block that takes a minute to execute. You add it to a queue from the main thread. Let's look at the four cases.
async - concurrent: the code runs on a background thread. Control returns immediately to the main thread (and UI). The block can't assume that it's the only ...
What generates the “text file busy” message in Unix?
...r is accessing your file. Use lsof to check what other processes are using it. You can use kill command to kill it if needed.
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#ifdef replacement in the Swift language
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Yes you can do it.
In Swift you can still use the "#if/#else/#endif" preprocessor macros (although more constrained), as per Apple docs. Here's an example:
#if DEBUG
let a = 2
#else
let a = 3
#endif
Now, you must set the "DEBUG"...