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How to test an SQL Update statement before running it?
In some cases, running an UPDATE statement in production can save the day. However a borked update can be worse than the initial problem.
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Is there a way to get the XPath in Google Chrome?
I have a webpage I want to use with YQL. But I need the XPath of a specific item. I can see it in the debug tools area for Google Chrome but I don't see a way to copy that XPath.
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What is the difference between UNION and UNION ALL?
What is the difference between UNION and UNION ALL ?
26 Answers
26
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Why doesn't the height of a container element increase if it contains floated elements?
I would like to ask how height and float work. I have an outer div and an inner div that has content in it. Its height may vary depending on the content of the inner div but it seems that my inner div will overflow its outside div. What would be the proper way to do it?
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How to get ERD diagram for an existing database?
I have a PostgreSQL database. I want to get its ERD. How can I do so?
12 Answers
12
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How can I force gradle to redownload dependencies?
How can I tell gradle to redownload dependencies from repositories?
23 Answers
23
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What is a 'Closure'?
I asked a question about Currying and closures were mentioned.
What is a closure? How does it relate to currying?
23 Answer...
Read a variable in bash with a default value
I need to read a value from the terminal in a bash script. I would like to be able to provide a default value that the user can change.
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Convert a Map to a POJO
I've been looking at Jackson, but is seems I would have to convert the Map to JSON, and then the resulting JSON to the POJO.
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Is there an easy way to request a URL in python and NOT follow redirects?
Looking at the source of urllib2 it looks like the easiest way to do it would be to subclass HTTPRedirectHandler and then use build_opener to override the default HTTPRedirectHandler, but this seems like a lot of (relatively complicated) work to do what seems like it should be pretty simple.
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