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How can I check file size in Python?
...)
f.seek(0, os.SEEK_END)
size = f.tell()
f.seek(old_file_position, os.SEEK_SET)
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Difference between __str__ and __repr__?
...ases it will be much quicker to stop at an exception to investigate, or to set a breakpoint, because you don't have to go through thousands of lines of logging (which will clutter your disk and slow down the application). Finally, it's not always possible to log, for example on embedded devices, the...
iOS JavaScript bridge
... execute(url)
{
var iframe = document.createElement("IFRAME");
iframe.setAttribute("src", url);
document.documentElement.appendChild(iframe);
iframe.parentNode.removeChild(iframe);
iframe = null;
}
You call the execute function repeatedly and since each call executes in its own iframe, ...
Default string initialization: NULL or Empty? [closed]
...user's middle name.
NULL when it is an error if the ensuing code does not set the value explicitly.
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How to avoid “if” chains?
...e time, especially in systems programming when you need to unwind a lot of set-up code.
– Scotty Bauer
Jun 26 '14 at 19:51
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Rounding up to next power of 2
...sed to compute log2 very efficiently. See en.wikipedia.org/wiki/Find_first_set
– Simon
Oct 4 '13 at 21:57
...
How to generate a random string in Ruby
... B, 1 with I, 0 with O, L with 1, etc.
# Generates a random string from a set of easily readable characters
def generate_activation_code(size = 6)
charset = %w{ 2 3 4 6 7 9 A C D E F G H J K M N P Q R T V W X Y Z}
(0...size).map{ charset.to_a[rand(charset.size)] }.join
end
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How to solve java.lang.NoClassDefFoundError?
.... That class file must be placed in .../project/com/example, and you would set your classpath to .../project/.
Side note: I would recommend taking advantage of the amazing tooling that exists for Java and JVM languages. Modern IDE's like Eclipse and IDEA and build management tools like Maven or Gra...
How can I check if multiplying two numbers in Java will cause an overflow?
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P.S. Sorr, I think I need an extra bit set in the AND mask (0xffffffff80000000L)-- it's a bit late, but you get the idea...
– Neil Coffey
Nov 2 '09 at 4:27
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Is using a lot of static methods a bad thing?
...rnal state C that I want to be able to adjust, then I add a constructor to set C and don't use a static transform.
15 Answe...