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How to run a single RSpec test?
...roller_spec.rb:19 /Library/Ruby/Gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:27:in `setup': You have already activated rspec-core 2.6.2, but your Gemfile requires rspec-core 2.6.0. Consider using bundle exec. (Gem::LoadError) "
– AnApprentice
May 24 '11 a...
What's the best practice to round a float to 2 decimals? [duplicate]
... Android game I am working on, creating a new BigDecimal instance multiple times each frame accounted for 99.9% of my memory allocations, so something to watch out for. In my opinion @Evan Stin's method 2 is the best answer, it's faster and doesn't leave anything behind.
– hamh...
UIButton custom font vertical alignment
...
Late to the party, but as this issue hit me for the Nth time, I thought I'd post the simplest solution I've found: using Python FontTools.
Install Python 3 if it's not available on your system.
Install FontTools
pip3 install fonttools
FontTools include a TTX tool which enables...
Can regular expressions be used to match nested patterns? [duplicate]
... expression that matches a nested pattern that occurs an unknown number of times? For example, can a regular expression match an opening and closing brace when there are an unknown number of open/close braces nested within the outer braces?
...
Is pass-by-value a reasonable default in C++11?
... There is one risk with const&, that has tripped me up a few times. void foo(const T&); int main() { S s; foo(s); }. This can compile, even though the types are different, if there is a T constructor that takes an S as argument. This can be slow, because a large T object may be ...
How to randomize (shuffle) a JavaScript array?
... always start at 0), and thereby skipping the final element.
Algorithm runtime is O(n). Note that the shuffle is done in-place so if you don't want to modify the original array, first make a copy of it with .slice(0).
EDIT: Updating to ES6 / ECMAScript 2015
The new ES6 allows us to assign two v...
Why can't I use float value as a template parameter?
...>, then the string literal can be converted into such a pack at compile time. Here is a demo on ideone. (Demo is C++14, but it's easy to port it back to C++11 - std::integer_sequence is the only difficulty)
– Aaron McDaid
Jul 20 '15 at 20:05
...
git: 'credential-cache' is not a git command
... password caching. It seems like the instructions are wrong, because every time I git push origin master I get this error:
...
Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
...
I didn't find the time to try it out myself, but maybe you know this one: does the pointer-lock API also work outside a canvas? Or is it restricted to a canvas?
– Joshua Muheim
Aug 13 '14 at 12:34
...
Disposing WPF User Controls
...ets out of use. In particular it frees resources when control is used many times during application runtime. So ioWint's solution is preferable. Here's the code:
public MyWpfControl()
{
InitializeComponent();
Loaded += (s, e) => { // only at this point the control is ready
Win...