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Should I make HTML Anchors with 'name' or 'id'?
When one wants to refer to some part of a webpage with the " http://example.com/#foo " method, should one use
14 Answers
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Convert SVG image to PNG with PHP
I'm working on a web project that involves a dynamically generated map of the US coloring different states based on a set of data.
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What's the best practice to round a float to 2 decimals? [duplicate]
...was working with statistics in Java 2 years ago and I still got the codes of a function that allows you to round a number to the number of decimals that you want. Now you need two, but maybe you would like to try with 3 to compare results, and this function gives you this freedom.
/**
* Round to ...
Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height
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25 Answers
25
Active
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Does Ruby have a string.startswith(“abc”) built in method?
Does Ruby have a some_string.starts_with("abc") method that's built in?
4 Answers
4
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Approximate cost to access various caches and main memory?
...e the approximate time (in nanoseconds) to access L1, L2 and L3 caches, as well as main memory on Intel i7 processors?
5 An...
Inline labels in Matplotlib
...n Matplotlib, it's not too tough to make a legend ( example_legend() , below), but I think it's better style to put labels right on the curves being plotted (as in example_inline() , below). This can be very fiddly, because I have to specify coordinates by hand, and, if I re-format the plot, I prob...
Learning Ant path style
Where can I find resources to learn Ant path style conventions? I've gone to the Ant site itself, but couldn't find any information on path styles.
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Transform DateTime into simple Date in Ruby on Rails
I have a datetime column in db that I want to transform into a simple date when I show it to users.
6 Answers
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Designing function f(f(n)) == -n
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How about:
f(n) = sign(n) - (-1)n * n
In Python:
def f(n):
if n == 0: return 0
if n >= 0:
if n % 2 == 1:
return n + 1
else:
return -1 * (n - 1)
else:
if n % 2 == 1:
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