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When I catch an exception, how do I get the type, file, and line number?
...
import sys, os
try:
raise NotImplementedError("No error")
except Exception as e:
exc_type, exc_obj, exc_tb = sys.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
print(exc_type, fname, exc...
Rails params explained?
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The params come from the user's browser when they request the page. For an HTTP GET request, which is the most common, the params are encoded in the url. For example, if a user's browser requested
http://www.example.com/?foo=1&boo=octopus
then params[:foo] would be "1" and params[:boo] ...
What is null in Java?
...ere is no type which null is an instanceof.
15.20.2 Type Comparison Operator instanceof
RelationalExpression:
RelationalExpression instanceof ReferenceType
At run time, the result of the instanceof operator is true if the value of the RelationalExpression is not null and the reference c...
How do I reload .bashrc without logging out and back in?
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You just have to enter the command:
source ~/.bashrc
or you can use the shorter version of the command:
. ~/.bashrc
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How to jump directly to a column number in Vim
Sometimes for debugging purposes I have to do the exciting job of wading through minified javascript code. The lines are upto 600 columns wide. The exception reporting library is kind enough to provide me the exact crash coordinates in the form of line number and column number. However I can't find ...
SQL function as default parameter value?
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Default value for stored procedures parameter have to be constants.
You'd need to do the following...
ALTER Procedure [dbo].[my_sp]
@currentDate datetime = null
AS
IF @currentDate is null
SET @currentDate = getdate()
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Comparing boxed Long values 127 and 128
...if conditions. When these values are less than 128 , the if condition works properly, but when they are greater than or equal to 128 , comparison fails.
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Check if bash variable equals 0 [duplicate]
... the variables into the expression. The problem here is that the -eq operator is incorrectly used as an operator with only one argument (the zero), but it requires two arguments. That is why you get the unary operator error message.
EDIT: As Doktor J mentioned in his comment to this answer, a safe ...
Sort array of objects by single key with date value
I have an array of objects with several key value pairs, and I need to sort them based on 'updated_at':
19 Answers
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java.lang.NoClassDefFoundError: Could not initialize class XXX
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My best bet is there is an issue here:
static {
//code for loading properties from file
}
It would appear some uncaught exception occurred and propagated up to the actual ClassLoader attempting to load the class. We would need a stacktrace to confirm this though.
Either that o...