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How to get a variable value if variable name is stored as string?
...val variable_value="\$$variable_name"
fi
echo "$variable_value"
}
test=123
get_value_of test
# 123
test="\$(echo \"something nasty\")"
get_value_of test
# $(echo "something nasty")
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Will the base class constructor be automatically called?
...l to base() when there is a constructor with no arguments.
You can easily test this by printing out the age of the customer after construction (link to ideone with a demo).
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Using “like” wildcard in prepared statement
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@BalusC this applies to MSSQL, Postgres, and MySQL in my testing. The String being made into a parameter is itself interpreted as a mix of data and control instructions. SQL concatenation occurs before it is interpreted and preserves the vulnerability. The IEEE Center for Secure De...
What's wrong with using == to compare floats in Java?
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the correct way to test floats for 'equality' is:
if(Math.abs(sectionID - currentSectionID) < epsilon)
where epsilon is a very small number like 0.00000001, depending on the desired precision.
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How to get a variable name as a string in PHP?
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Actually now that I've tested my code, my code always returned 'var' because it's being used in the function. When I use $GLOBALS instead, it returns the correct variable name for some reason. So I'll change the above code to use $GLOBALS.
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
... and get slightly different results with different Intel Core i7 cpus.
My test at work with an Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
The 'numbers' are in 1000s of bytes per second processed.
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
md5 64257.97k ...
Logger slf4j advantages of formatting with {} instead of string concatenation
...out knowing if it is needed or not (the traditional "is debugging enabled" test known from log4j), and should be avoided if possible, as the {} allows delaying the toString() call and string construction to after it has been decided if the event needs capturing or not. By having the logger format a ...
Does Internet Explorer 8 support HTML 5?
... var div = document.createElement('div'); div.innerHTML = '<section>test</section>'; We end up with div.childNodes.length = 2. I ran into the problem using jQuery and have been trying to figure out what's going on in IE.
– Nick Spacek
Feb 23 '10 a...
Can someone explain __all__ in Python?
...re constantly tweaking your API.
Maybe you do have users, but you have unittests that cover the API, and you're still actively adding to the API and tweaking in development.
An export decorator
The downside of using __all__ is that you have to write the names of functions and classes being export...
How to free memory in Java?
... @Pablo Santa Cruz What do you mean it does not free memory? I just tested it out on my program that seemed to have a leak and the ram usage seemed to stabilize? And Daniel just said it only suggests it then how come the percentage of ram used always stabilized each time I called the method. ...