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How do I use the conditional operator (? :) in Ruby?
...." : question.question %>
Wrapping the conditional test helps make it more readable because it visually separates the test:
<% question = (question.size > 20) ? question.question.slice(0, 20)+"..." : question.question %>
Of course, the whole example could be made a lot more readable...
Get a list of all git commits, including the 'lost' ones
...stack. You can find all the commits that don't appear to be referenced any more- git fsck --unreachable will do this for you- but that will include commits that you threw away after a git commit --amend, old commits on branches that you rebased etc etc. So seeing all these commits at once is quite l...
Change font color for comments in vim
...BCDEF with ctermfg=N with N being a color number.
Also type :help :hi for more information.
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FIND_IN_SET() vs IN()
...onable limit on the number of values in the comma separated lists (say, no more than 5), so you can try to use this query:
SELECT name
FROM orders
CROSS JOIN
(
SELECT 1 AS pos
UNION ALL
SELECT 2 AS pos
UNION ALL
SELECT 3 AS pos
UNION AL...
Determine the number of lines within a text file
... write:
var lineCount = File.ReadAllLines(@"C:\file.txt").Length;
For a more efficient method you could do:
var lineCount = 0;
using (var reader = File.OpenText(@"C:\file.txt"))
{
while (reader.ReadLine() != null)
{
lineCount++;
}
}
Edit: In response to questions about effi...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
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XAMPP, Apache - Error: Apache shutdown unexpectedly
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Get querystring from URL using jQuery [duplicate]
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Java - sending HTTP parameters via POST method easily
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What is data oriented design?
...balls;
Data Oriented Approach
In Data Oriented Design, however, you are more likely to write the code like this:
class Balls {
vector<Point> position;
vector<Color> color;
vector<double> radius;
void draw();
};
As you can see there is no single unit representing on...