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Select Last Row in the Table
... last file inserted into my table. I know that the method first() exists and provides you with the first file in the table but I don't know how to get the last insert.
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Protecting executable from reverse engineering?
I've been contemplating how to protect my C/C++ code from disassembly and reverse engineering. Normally I would never condone this behavior myself in my code; however the current protocol I've been working on must not ever be inspected or understandable, for the security of various people.
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Determining the size of an Android view at runtime
I am trying to apply an animation to a view in my Android app after my activity is created. To do this, I need to determine the current size of the view, and then set up an animation to scale from the current size to the new size. This part must be done at runtime, since the view scales to differe...
How to prove that a problem is NP complete?
...least one vertex in the cover set?) is in NP:
our input X is some graph G and some number k (this is from the problem definition)
Take our information C to be "any possible subset of vertices in graph G of size k"
Then we can write an algorithm V that, given G, k and C, will return whether that s...
How can I get the current user's username in Bash?
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On the command line, enter
whoami
or
echo "$USER"
To save these values to a variable, do
myvariable=$(whoami)
or
myvariable=$USER
Of course, you don't need to make a variable since that is what the $USER variable is for.
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How to determine if binary tree is balanced?
... move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced.
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How to fix homebrew permissions?
I have uninstalled and installed Homebrew 3 times now because it seems to never allow me to install anything as it denies me permissions at the end of most installations.
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How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?
I have test-unit installed and rspec installed (along with -core , -expectations , -mocks and -rails version 2.6.x). When I run the command rails new foo , it uses test-unit to generate the test stub files instead of rspec .
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trying to align html button at the center of the my page [duplicate]
... position: absolute;
top: 50%;
}
There are many ways to skin a cat, and this is just one.
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Is there a function to deselect all text using JavaScript?
...elements. For form-fields (like textarea), this method doesn't work in IE9 and FF5.
– Šime Vidas
Jul 3 '11 at 13:37
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