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Is the sizeof(some pointer) always equal to four?
...o other guarantees, including no guarantee that sizeof(int *) == sizeof(double *).
In practice, pointers will be size 2 on a 16-bit system (if you can find one), 4 on a 32-bit system, and 8 on a 64-bit system, but there's nothing to be gained in relying on a given size.
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How do I sort a list by different parameters at different timed
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I think your enum approach is basically sound, but the switch statements really need a more object oriented approach. Consider:
enum PersonComparator implements Comparator<Person> {
ID_SORT {
public int compare(Person o1, Person o2) {
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What is the difference between XML and XSD?
What is the difference between Extensible Markup Language (XML) and XML Schema (XSD)?
7 Answers
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Automatically capture output of last command into a variable using Bash?
I'd like to be able to use the result of the last executed command in a subsequent command. For example,
22 Answers
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Rails - Nested includes on Active Records?
...is event and every profile associated to each user. The Users get included but not their profiles.
3 Answers
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Update Git branches from master
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You have two options:
The first is a merge, but this creates an extra commit for the merge.
Checkout each branch:
git checkout b1
Then merge:
git merge origin/master
Then push:
git push origin b1
Alternatively, you can do a rebase:
git fetch
git rebase orig...
How can I repeat a character in Bash?
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You can use:
printf '=%.0s' {1..100}
How this works:
Bash expands {1..100} so the command becomes:
printf '=%.0s' 1 2 3 4 ... 100
I've set printf's format to =%.0s which means that it will always print a single = no matter what argument it is given. Therefore it prints 100 =...
Install dependencies globally and locally using package.json
Using npm we can install the modules globally using -g option. How can we do this in the package.json file?
6 Answers
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Can I have an IF block in DOS batch file?
In a DOS batch file we can only have 1 line if statement body? I think I found somewhere that I could use () for an if block just like the {} used in C-like programming languages, but it is not executing the statements when I try this. No error message either. This my code:
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What really is a deque in STL?
...ure used), and the deque stopped me: I thought at first that it was a double linked list, which would allow insertion and deletion from both ends in constant time, but I am troubled by the promise made by the operator [] to be done in constant time. In a linked list, arbitrary access should be O...