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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
... no possibility of hidden or subtle unexpected behavior. However, the most common and idiomatic way is “the mutable way”.
As a final aside, this behavior of Hash default values is noted in Ruby Koans.
† This isn’t strictly true, methods like instance_variable_set bypass this, but they mu...
What is the advantage of using forwarding references in range-based for loops?
...ol> v(10);
for (auto& e : v)
e = true;
}
This doesn't compile because rvalue vector<bool>::reference returned from the iterator won't bind to a non-const lvalue reference. But this will work:
#include <vector>
int main()
{
std::vector<bool> v(10);
fo...
Are unused CSS images downloaded?
...fari: Doesn't
IE8: Doesn't
IE7: Doesn't
IE6: Unknown (Can someone test and comment?)
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Ruby replace string with captured regex pattern
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@VickyChijwani Good comment, but also note that when using Ruby inline (on the command line with -e), it is more likely to see double quotes: printf "Punkinhead the name" | ruby -ne 'puts gsub /.*(the name)/, "Jonathans \\1"' because expression...
How to fully remove Xcode 4
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I use this command:
sudo /Developer/Library/uninstall-devtools --mode=all
Edit (1 year later):
If you've downloaded Xcode from the App Store, it's self-contained, as @mediaslave suggests. You can just drag it to the trash or use A...
How to apply `git diff` patch without Git installed?
...h created by git diff without git installed?
I have tried to use patch command but it always asks file name to patch.
5...
Android, How can I Convert String to Date?
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What is the “owning side” in an ORM mapping?
...ing side necessary:
The idea of a owning side of a bidirectional relation comes from the fact that in relational databases there are no bidirectional relations like in the case of objects. In databases we only have unidirectional relations - foreign keys.
What is the reason for the name 'owning s...
How to suppress specific MSBuild warning
... disable specific MSBuild warning (e.g. MSB3253) when running MSBuild from command line? My build script calls msbuild.exe much the following way:
...