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Why is division in Ruby returning an integer instead of decimal value?
...t are floats to begin with. I've built a prime number generator in Ruby in order to learn the syntax, now I'm optimizing it to learn what works best. Here's the benchmark I put together: require 'base64';require 'zlib';puts Zlib.inflate(Base64.decode64("eJxlkMEOwiAQRO98hekFuGzxQEwPXvwR01ZqiYHqBk2Tln...
Building a complete online payment gateway like Paypal [closed]
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How do I use the conditional operator (? :) in Ruby?
... Small edit puts (true ? "true" : "false") with parenthesis. Otherwise the order of operations is not clear. When I first read this I was confused as I read it as (puts true) ? "true" : "false" then expected puts to return the boolean which then became the string value.
– Fres...
How random is JavaScript's Math.random?
...andom gives you an uniform distribution of numbers.
If you want different orders of magnitude, I would suggest using an exponential function to create what's called a power law distribution:
function random_powerlaw(mini, maxi) {
return Math.ceil(Math.exp(Math.random()*(Math.log(maxi)-Math.log...
How to fast-forward a branch to head?
... reset first do git reflog, that displays the state of the HEAD in reverse order, find the hash the HEAD was pointing to before the reset operation (usually obvious) and hard reset the branch to that hash.
Take a full page screenshot with Firefox on the command-line
...er Toolbar to open a command line. Write:
screenshot
and press Enter in order to take a screenshot.
To fully answer the question, you can even save the whole page, not only the visible part of it:
screenshot --fullpage
And to copy the screenshot to clipboard, use --clipboard option:
screensh...
How to see the changes in a Git commit?
...COMMIT^!
or
git diff-tree -p COMMIT
With git show, you would need (in order to focus on diff alone) to do:
git show --color --pretty=format:%b $COMMIT
The COMMIT parameter is a commit-ish:
A commit object or an object that can be recursively dereferenced to a commit object. The following...
WPF and initial focus
...ion.First));
This will automatically select the first control in the tab order, so it's a general solution that should be able to be dropped into any window and Just Work.
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Executing Batch File in C#
... You could try to dump out the contents of the output and error streams in order to find out what's happening:
static void ExecuteCommand(string command)
{
int exitCode;
ProcessStartInfo processInfo;
Process process;
processInfo = new ProcessStartInfo("cmd.exe", "/c " + command);
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How can you use optional parameters in C#?
...rameters by their names, and of course you can pass parameters in whatever order you want :)
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