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Creating C macro with ## and __LINE__ (token concatenation with positioning macro)
...m is that when you have a macro replacement, the preprocessor will only expand the macros recursively if neither the stringizing operator # nor the token-pasting operator ## are applied to it. So, you have to use some extra layers of indirection, you can use the token-pasting operator with a recurs...
Spring Expression Language (SpEL) with @Value: dollar vs. hash ($ vs. #)
... ${...} . Furthermore, when I started with SpEL I was told to use ${...} and it works fine.
4 Answers
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Remote JMX connection
...s. The server was on a VM. The VM was deployed fenced so it has internal and an external IP addresses. We started the server java process with -Djava.rmi.server.hostname=<external-ip-address>.
– buzz3791
Oct 28 '13 at 21:39
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Remove an entire column from a data.frame in R
...on't need drop argument cause it always return data.frame from data.frame. And I think this is much better way to localized columns (and only columns) in data.frame (and it's faster). Check: cars[-1] (one col data.frame) or better cars[-(1:2)]: data frame with 0 columns and 50 rows.
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How do I hide javascript code in a webpage?
...ion directly which is code being viewed from the browser's View Source command.
As other have said, there is no way to protect javascript intended to run in a browser from a determined viewer. If the browser can run it, then any determined person can view/run it also.
But, if you put your javascr...
Best design for a changelog / auditing database table? [closed]
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Who the heck created/updated/deleted a record
with ID=X in the table Foo and when?
So, in order to be able to answer such questions quickly (using SQL), we ended up having two additional columns in the audit table
object type (or table name)
object ID
That's when design of our audit log reall...
How can I view live MySQL queries?
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You can run the MySQL command SHOW FULL PROCESSLIST; to see what queries are being processed at any given time, but that probably won't achieve what you're hoping for.
The best method to get a history without having to modify every application using ...
How to move files from one git repo to another (not a clone), preserving history
...ory, since you wanted to end up with only a (renamed) subset of the files, and this by definition changes the hashes. Since none of the standard commands (e.g. pull) rewrite history, there's no way you could use them to accomplish this.
You could refine the details, of course - some of your cloning...
Does delete on a pointer to a subclass call the base class destructor?
...s a heap memory allocation for one of its fields. Class A is instantiated and stored as a pointer field in another class ( class B .
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How to stop C# console applications from closing automatically? [duplicate]
...compile (start debugging) your work with Ctrl+F5.
Try it. I always do it and the console shows me my results open on it. No additional code is needed.
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