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How do C++ class members get initialized if I don't do it explicitly?
...rs ptr , name , pname , rname , crname and age . What happens if I don't initialize them myself? Here is an example:
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What is “2's Complement”?
...ting up, with a maximum of 2(number of bits - 1)-1.
for negative integers, do exactly the same thing, but switch the role of 0's and 1's (so instead of starting with 0000, start with 1111 - that's the "complement" part).
Let's try it with a mini-byte of 4 bits (we'll call it a nibble - 1/2 a byte)....
python: How do I know what type of exception occurred?
... can break the "rule". Here is an explanation. Basically, it's so that you don't hide:
the fact that an error occurred
the specifics of the error that occurred (error hiding antipattern)
So as long as you take care to do none of those things, it's OK to catch the generic exception. For instance...
How do I get a background location update every n minutes in my iOS application?
...ecution.
Note: I lost some time by testing this in the simulator where it doesn't work. However, it works fine on my phone.
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Move the most recent commit(s) to a new branch with Git
...g git reset --hard HEAD~3 (see Moving to an existing branch above). If you don't merge your changes first, they will be lost.
Unless there are other circumstances involved, this can be easily done by branching and rolling back.
# Note: Any changes not committed will be lost.
git branch newbranch ...
Linux - Replacing spaces in the file names
...
This should do it:
for file in *; do mv "$file" `echo $file | tr ' ' '_'` ; done
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How do I rename my Git 'master' branch to 'release'?
...go Settings → Branches → Default Branch. Change it to release and then do the rest of the steps.
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How to work around the lack of transactions in MongoDB?
... two-phase commit . The second solution seems the best choice. The third I don't wish to follow because it seems that many things could go wrong and I can't test it in every aspect. I'm having a hard time refactoring my project to perform atomic operations. I don't know whether this comes from my li...
Get exit code of a background process
...etes, so you might not want to call this until you are sure the process is done), and then returns the exit code of the completed process.
2, 3: ps or ps | grep " $! " can tell you whether the process is still running. It is up to you how to understand the output and decide how close it is to finish...
When should I use Lazy?
... and may use some locking overhead (or sacrifices thread safety if not) to do so. Thus, it should be chosen carefully and not used unless needed.
– James Michael Hare
Jun 11 '13 at 20:23
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