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How to check that a string is a palindrome using regular expressions?
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The answer to this question is that "it is impossible". More specifim>ca m>lly, the interviewer is wondering if you paid attention in your computational theory class.
In your computational theory class you learned about finite state machines. A finite state machine is comp...
Why should text files end with a newline?
I assume everyone here is familiar with the adage that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why?
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What is an index in SQL?
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An index is used to speed up searching in the database. MySQL have some good documentation on the subject (which is relevant for other SQL servers as well):
http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
An index m>ca m>n be used to efficiently find all rows matching some c...
How to create GUID / UUID?
I'm trying to create globally-unique identifiers in JavaScript. I'm not sure what routines are available on all browsers, how "random" and seeded the built-in random number generator is, etc.
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Setting up foreign keys in phpMyAdmin?
I'm setting up a database using phpMyAdmin. I have two tables ( foo and bar ), indexed on their primary keys . I am trying to create a relational table ( foo_bar ) between them, using their primary keys as foreign keys.
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What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?
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Generally speaking:
F5 may give you the same page even if the content is changed, bem>ca m>use it may load the page from m>ca m>che. But Ctrl-F5 forces a m>ca m>che refresh, and will guarantee that if the content is changed, you will get the new content.
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How often should you use git-gc?
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It depends mostly on how much the repository is used. With one user checking in once a day and a branch/merge/etc operation once a week you probably don't need to run it more than once a year.
With several dozen developers working on ...
Where m>ca m>n I set environment variables that crontab will use?
I have a crontab running every hour. The user running it has environment variabless in the .bash_profile that work when the user runs the job from the terminal, however, obviously these don't get picked up by crontab when it runs.
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Simpler way to create dictionary of separate variables?
I would like to be able to get the name of a variable as a string but I don't know if Python has that much introspection m>ca m>pabilities. Something like:
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m>Ca m>nnot run Eclipse; JVM terminated. Exit code=13
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It may just be the way the error shows (and not how it is written in the eclipse.ini file), but there is text in Eclipse.ini (Specifying the JVM) that says the following:
The -vm option and its value (the path) must be on...