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How can I print the contents of a hash in Perl?
I keep printing my hash as # of buckets / # allocated.
How do I print the contents of my hash?
11 Answers
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Execute bash script from URL
...the advantage of using that initial redirection? I ask because for RVM installation, they use the command: bash < <(curl -s https://rvm.beginrescueend.com/install/rvm) Why not just: bash <(curl -s https://rvm.beginrescueend.com/install/rvm)
– Tristan
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Using global variables between files?
...e project, with around 50 files, and I need to define global variables for all those files.
6 Answers
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Calling method using JavaScript prototype
Is it possible to call the base method from a prototype method in JavaScript if it's been overridden?
14 Answers
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Rails: convert UTC DateTime to another time zone
...e names of the ActiveSupport time zones by doing:
ActiveSupport::TimeZone.all.map(&:name)
# or for just US
ActiveSupport::TimeZone.us_zones.map(&:name)
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What does “WARN Could not determine content-length of response body.” mean and how to I get rid of i
...e to a future release of Ruby.
I'm using rails 3.2.0 on ruby 1.9.3-p0 installed through RVM as a single user. So the location in my case is:
~/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/webrick/httpresponse.rb
The location of the file to be altered differs depending on the type of installation, R...
CUDA incompatible with my gcc version
... If you compile with cmake .. && make you can try cmake -D CUDA_NVCC_FLAGS="-ccbin gcc-4.4" .. && make. If you use plain Makefile you can try make CXX=g++-4.4 CC=gcc-4.4.
– patryk.beza
Apr 4 '16 at 18:54
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std::unique_lock or std::lock_guard?
...er you need to relock the guard.
std::unique_lock has other features that allow it to e.g.: be constructed without locking the mutex immediately but to build the RAII wrapper (see here).
std::lock_guard also provides a convenient RAII wrapper, but cannot lock multiple mutexes safely. It can be us...
Adding a UILabel to a UIToolbar
...her buttons are typically on the toolbar, spacers are placed on each side of the title button so it stays centered.
NSMutableArray *items = [[self.toolbar items] mutableCopy];
UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:n...
Append value to empty vector in R?
... avoided".
As BrodieG mentioned in the comments: it is much better to pre-allocate a vector of the desired length, then set the element values in the loop.
Here are several ways to append values to a vector. All of them are discouraged.
Appending to a vector in a loop
# one way
for (i in 1:le...