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Java: How to test methods that call System.exit()?
...tem.exit() terminates the JVM, not just the current thread. Are there any common patterns for dealing with this? For example, can I subsitute a stub for System.exit() ?
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Best way to parse command-line parameters? [closed]
What's the best way to parse command-line parameters in Scala?
I personally prefer something lightweight that does not require external jar.
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How do I move an existing Git submodule within a Git repository?
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Note: As mentioned in the comments this answer refers to the steps needed with older versions of git. Git now has native support for moving submodules:
Since git 1.8.5, git mv old/submod new/submod works as expected and does all the plumbing for ...
Protected in Interfaces
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answered Mar 21 '11 at 12:01
Stephen CStephen C
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How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
... do the same thing but create a new array).
Straight from the docs (http://www.ruby-doc.org/core-1.9.3/Array.html#method-i-concat):
concat(other_ary)
Appends the elements of other_ary to self.
So
[1,2].concat([3,4]) #=> [1,2,3,4]
Array#concat will not flatten a multidimensional array if i...
Signed versus Unsigned Integers
...ualise is to use the leftmost bit as a flag (sign and magnitude), but more common is two's complement. Both are in use in most modern microprocessors — floating point uses sign and magnitude, while integer arithmetic uses two's complement.
signed integers can hold both positive and negative n...
Equals(=) vs. LIKE
...support, which is not the only difference between these operators!
= is a comparison operator that operates on numbers and strings. When comparing strings, the comparison operator compares whole strings.
LIKE is a string operator that compares character by character.
To complicate matters, both o...
How to work with Git branches and Rails migrations
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When you add a new migration in any branch, run rake db:migrate and commit both the migration and db/schema.rb
If you do this, in development, you'll be able to switch to another branch that has a different set of migrations and simply run rake db:schema:load.
Note that this will recreate t...
What is duck typing?
...m duck typing while reading random topics on software online and did not completely understand it.
13 Answers
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Can you pass parameters to an AngularJS controller on creation?
I have a controller responsible for communicating with an API to update properties of a user, name, email, etc. Each user has an 'id' which is passed from the server when the profile page is viewed.
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