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What is the difference between compare() and compareTo()?
...be difficult! (as in natural String order).
Another difference, pointed out by HaveAGuess in the comments:
Comparable is in the implementation and not visible from the interface, so when you sort you don't really know what is going to happen.
Comparator gives you reassurance that the ordering ...
What is the difference between 'my' and 'our' in Perl?
...lobal variables
definitely not private
not necessarily new
can be accessed outside the package (or lexical scope) with the
qualified namespace, as $package_name::variable.
Declaring a variable with our allows you to predeclare variables in order to use them under use strict without getting typo ...
How do I get current URL in Selenium Webdriver 2 Python?
...d paste using the keys common function from selenium, and then printing it out or storing it as a variable, etc.
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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
... NullPointerException. With the difference that with cast it compiles, without cast it doesn't].
– Jochem
May 30 '12 at 14:38
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Anaconda vs. EPD Enthought vs. manual installation of Python [closed]
... install is a viable option only if you are interested only in Python, without other packages.
Therefore better chose either EPD (now Canopy) or Anaconda.
Anaconda has around 270 packages, including the most important for most scientific applications and data analysis, that is, NumPy, SciPy, Panda...
What is the role of src and dist folders?
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Why not spell out the entire folder name? If that was the case we would not have to ask this question... Instead we have abbreviated folder names that are not abbreviated well enough to infer their purpose.
– Marko
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WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
...OREIGN KEY (FKID) REFERENCES T1 (ID); --fails
--Add the CONSTRAINT without checking existing values
ALTER TABLE T2 WITH NOCHECK ADD CONSTRAINT FK_T2_T1 FOREIGN KEY (FKID) REFERENCES T1 (ID); --succeeds
ALTER TABLE T2 CHECK CONSTRAINT FK_T2_T1; --succeeds since the CONSTRAINT is attributed as ...
Representing null in JSON
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null is not zero. It is not a value, per se: it is a value outside the domain of the variable indicating missing or unknown data.
There is only one way to represent null in JSON. Per the specs (RFC 4627 and json.org):
2.1. Values
A JSON value MUST be an object, array, number, or...
Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
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It's not faster.
If you really care, compile with assembler output for your platform and look to see.
It doesn't matter. This never matters. Write your infinite loops however you like.
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How to make Git “forget” about a file that was tracked but is now in .gitignore?
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.gitignore will prevent untracked files from being added (without an add -f) to the set of files tracked by git, however git will continue to track any files that are already being tracked.
To stop tracking a file you need to remove it from the index. This can be achieved with this com...