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What is a Context Free Grammar?
...to me what a context free grammar is? After looking at the Wikipedia entry and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are?
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How do I join two SQLite tables in my Android application?
I have an Android project that has a database with two tables: tbl_question and tbl_alternative .
4 Answers
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Git: Set up a fetch-only remote?
...ies that has a remote(s) configured, I see that each remote has both fetch and push specs:
5 Answers
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How to link godaddy domain with AWS Elastic Beanstalk environment?
...to create a CNAME or do any forwarding - this is bad from the point of SEO and not recommended by Amazon. Even you should not point a record to IP directly - it will cause a lot of troubles in the future because IP can be changed any moment.
The most elegant way is to migrate DNS service from GoDad...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
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I think the problem with this command is, that you have to be the DB superuser. \copy works as normal user, too
– Exocom
Feb 8 '14 at 13:00
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Understanding the difference between __getattr__ and __getattribute__
I am trying to understand the difference between __getattr__ and __getattribute__ , however, I am failing at it.
4 Answe...
Why is it possible to recover from a StackOverflowError?
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When the stack overflows and StackOverflowError is thrown, the usual exception handling unwinds the stack. Unwinding the stack means:
abort the execution of the currently active function
delete its stack frame, proceed with the calling function
abo...
In MySQL queries, why use join instead of where?
...plicit is almost universally better.
Conclusion
Short of familiarity and/or comfort, I don't see any benefit to continuing to use the ANSI-89 WHERE clause instead of the ANSI-92 JOIN syntax. Some might complain that ANSI-92 syntax is more verbose, but that's what makes it explicit. The more e...
Citing the author of a blockquote using Markdown syntax
I am using the Symfony CMS and it uses Markdown for article writing. I need to do a blockquote of a quote from Benjamin Franklin and would like to have the quote followed by a citation beneath it, but right now all it does is blockquote the whole line. How does one do this in markdown syntax?
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android button selector
... just need to set selector of button in your layout file.
<Button
android:id="@+id/button1"
android:background="@drawable/selector_xml_name"
android:layout_width="200dp"
android:layout_height="126dp"
android:text="Hello" />
and done.
Edit
Following is button_effec...