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Constructor in an Interface?
...nterface."
"If a define a Interface for this class so that I can have more
classes which implement the message interface, I can only define the
send method and not the constructor"
...these requirements are exactly what abstract classes are for.
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How do I check that a number is float or integer?
...r, an array containing a string representing an integral number, and maybe more.
– Dagg Nabbit
Oct 8 '10 at 16:53
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“Large data” work flows using pandas
...te new columns, save these.
(Giving a toy example could enable us to offer more specific recommendations.)
After that processing, then what do you do? Is step 2 ad hoc, or repeatable?
Input flat files: how many, rough total size in Gb. How are these organized e.g. by records? Does each one contains ...
Why use prefixes on member variables in C++ classes
...r (because the usage changes from var. to var-> and you have to be much more careful with pointers - NULLs, pointer arithmetic, etc), but all the others are very handy.
For example, you can use the same variable name in multiple ways in a single function: (here a C++ example, but it applies equa...
bash: shortest way to get n-th column of output
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How to calculate age (in years) based on Date of Birth and getDate()
... 18 17
(1 row(s) affected)
UPDATE here are some more accurate methods:
BEST METHOD FOR YEARS IN INT
DECLARE @Now datetime, @Dob datetime
SELECT @Now='1990-05-05', @Dob='1980-05-05' --results in 10
--SELECT @Now='1990-05-04', @Dob='1980-05-05' --results in 9
--SELEC...
Java Pass Method as Parameter
...nother way of doing this using a Visitor. The visitor approach is a little more involved - your nodes all need to be visitor-aware with an acceptVisitor() method - but if you need to traverse a more complex object graph then it's worth examining.
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How to elegantly check if a number is within a range?
...agree this is a terrible idea performance-wise, but the OP wants something more fancy than an if statement. This certainly accomplishes that... ;)
– Tim Coker
Jul 6 '10 at 17:49
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How to find unused/dead code in java projects [closed]
...after a method has been logged for the first time, thus after some time no more performance penalties occur. Maybe a similar thing can be done in Java with static boolean flags...
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Setting an environment variable before a command in Bash is not working for the second command in a
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