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C# equivalent of the IsNull() function in SQL Server
... function to check if a value is null, and if it is, return another value. Now I am wondering if there is anything similar in C#.
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What's the difference between RSpec and Cucumber? [closed]
...f Rails development experience. I've built a web application that's in use now with authentication and authorization and postgresql db.
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How to get the parent dir location
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I know the OP knows about dirname. It isn't obvious to everyone that applying dirname to a directory yields the parent directory.
– Marcelo Cantos
May 12 '10 at 9:09
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What does '
... [1] => $a
[2] => 1
)
[2] => ; // UNKNOWN (because it is optional (ignored))
[3] => Array
(
[0] => 369 // T_CLOSE_TAG
[1] => ?>
[2] => 1
)
)
You can use this code to test it yourself:
$tok...
How can I list the contents of a directory in Python?
...go, pathlib has been added to Python. My preferred way to list a directory now usually involves the iterdir method on Path objects:
from pathlib import Path
print(*Path("/home/username/www/").iterdir(), sep="\n")
share
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Converting Integer to Long
...though you can convert from int to long. For an individual value which is known to be a number and you want to get the long value, you could use:
Number tmp = getValueByReflection(inv.var1(), classUnderTest, runtimeInstance);
Long value1 = tmp.longValue();
For arrays, it will be trickier...
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Putting an if-elif-else statement on one line?
...gt;> a = "Hello" if foo() else "Goodbye"
Edit:
Your revised question now shows that the three statements are identical except for the value being assigned. In that case, a chained ternary operator does work, but I still think that it's less readable:
>>> i=100
>>> a = 1 if i...
How to tell which version of a gem a rails app is using
... rails version 2 and a more advanced bundler? Is this good/bad? (Yes, I know it's bad to have such an old version of rails, I want to know if it's catastrophic to have such a mismatched (if it is) rails and bundler).
– Brenda J. Butler
Aug 23 '14 at 0:56
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How can I sort arrays and data in PHP?
...ion. The above sort and related functions work on simple values that they know how to compare and sort. PHP does not simply "know" what to do with a complex value like array('foo' => 'bar', 'baz' => 42) though; so you need to tell it.
To do that, you need to create a comparison function. That ...
What does PermGen actually stand for?
I know what PermGen is, what it's used for, why it fails, how to increase it etc.
8 Answers
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