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What does the line “#!/bin/sh” mean in a UNIX shell script?
I was going through some shell script tutorials and found the following sample program:
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How do I interpret precision and scale of a number in a database?
I have the following column specified in a database: decimal(5,2)
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error: use of deleted function
I've been working on some C++ code that a friend has written and I get the following error that I have never seen before when compiling with gcc4.6:
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Does .NET have a way to check if List a contains all items in List b?
I have the following method:
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4
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difference between primary key and unique key
I'm using mysql database. I have a confusion between primary key and unique key.
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Setting dynamic scope variables in AngularJs - scope.
I have a string I have gotten from a routeParam or a directive attribute or whatever, and I want to create a variable on the scope based on this. So:
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What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...RuntimeErrors, but will NOT catch Exceptions. So if you raise an Exception in your code, this code will not catch it:
begin
rescue
end
In order to catch the Exception you will have to do this:
begin
rescue Exception
end
This means that in a sense, an Exception is a "worse" error than a Runtime...
Float vs Decimal in ActiveRecord
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I remember my CompSci professor saying never to use floats for currency.
The reason for that is how the IEEE specification defines floats in binary format. Basically, it stores sign, fraction and exponent to represent a Float. It's like a scientific notation...
Can the :not() pseudo-class have multiple arguments?
I'm trying to select input elements of all type s except radio and checkbox .
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warning about too many open figures
In a script where I create many figures with fix, ax = plt.subplots(...) , I get the warning RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (matplotlib.pyplot.figure) are retained until explicitly closed and may consume too much memory.
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