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What does the ??!??! operator do in C?
...?! is a trigraph that translates to |. So it says:
!ErrorHasOccured() || HandleError();
which, due to short circuiting, is equivalent to:
if (ErrorHasOccured())
HandleError();
Guru of the Week (deals with C++ but relevant here), where I picked this up.
Possible origin of trigraphs or as @...
Retrieving Property name from lambda expression
...r 23 '09 at 4:14
Cameron MacFarlandCameron MacFarland
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Likelihood of collision using most significant bits of a UUID in Java
If I'm using Long uuid = UUID.randomUUID().getMostSignificantBits() how likely is it to get a collision. It cuts off the least significant bits, so there is a possibility that you run into a collision, right?
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How would you make a comma-separated string from a list of strings?
... you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
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Determining if an Object is of primitive type
I have an Object[] array, and I am trying to find the ones that are primitives. I've tried to use Class.isPrimitive() , but it seems I'm doing something wrong:
...
Returning a file to View/Download in ASP.NET MVC
...ASP.NET MVC. What I want is a view listing two links, one to view the file and let the mimetype sent to the browser determine how it should be handled, and the other to force a download.
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Is there any Rails function to check if a partial exists?
...et an Exception. I'd like to check if a partial exists before rendering it and in case it doesn't exist, I'll render something else. I did the following code in my .erb file, but I think there should be a better way to do this:
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Can anybody push to my project on github?
I am new to git as well as github. I set up a repo on github, and I can push local stuff to this remote repo. Now here is the question: just after I push something to the remote repo, and I refresh the page, I can see the changes are uploaded(for example, if I wrote a readme.txt and push it to the r...
How to monitor the memory usage of Node.js?
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node-memwatch : detect and find memory leaks in Node.JS code.
Check this tutorial Tracking Down Memory Leaks in Node.js
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Applying .gitignore to committed files
...ignore to match the ignored files, you can do git ls-files -ci --exclude-standard to see the files that are included in the exclude lists; you can then do
//On Linux:
git ls-files -ci --exclude-standard -z | xargs -0 git rm --cached
//On Windows:
for /F "tokens=*" %a in ('git ls-files -ci --exclud...