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In where shall I use isset() and !empty()
...ewhere that the isset() function treats an empty string as TRUE , therefore isset() is not an effective way to validate text inputs and text boxes from a HTML form.
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Getting the last argument passed to a shell script
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This is a bit of a hack:
for last; do true; done
echo $last
This one is also pretty portable (again, should work with bash, ksh and sh) and it doesn't shift the arguments, which could be nice.
It uses the fact that for implicitly loops over the arg...
Using an SSH keyfile with Fabric
...ow do you configure fabric to connect to remote hosts using SSH keyfiles (for example, Amazon EC2 instances)?
8 Answers
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Is LINQ to SQL Dead or Alive?
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1) They can't "kill" Linq-to-SQL as it is already part of the .net framework. What they can do is stop adding features to it. That doesn't prevent the thousands of developers out there that are already using L2S from extending it and improving it. Some core areas are tricky to touch but they're so...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
Why does the sizeof operator return a size larger for a structure than the total sizes of the structure's members?
12 Ans...
Least common multiple for 3 or more numbers
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You can compute the LCM of more than two numbers by iteratively computing the LCM of two numbers, i.e.
lcm(a,b,c) = lcm(a,lcm(b,c))
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How do I drag and drop files into an application?
I've seen this done in Borland's Turbo C++ environment, but I'm not sure how to go about it for a C# application I'm working on. Are there best practices or gotchas to look out for?
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What is the difference between an ordered and a sorted collection?
Is there any difference between a sorted and an ordered collection?
8 Answers
8
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Which is faster in Python: x**.5 or math.sqrt(x)?
I've been wondering this for some time. As the title say, which is faster, the actual function or simply raising to the half power?
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How do you find all subclasses of a given class in Java?
How does one go about and try to find all subclasses of a given class (or all implementors of a given interface) in Java?
As of now, I have a method to do this, but I find it quite inefficient (to say the least).
The method is:
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