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How do I check if an index exists on a table field in MySQL?
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Be careful and test all the statement using this. This fails on some tables in my database when trying to use it with LiquiBase 1.9.5. Maybe my DB is corrupted. Or maybe it's a bug in the ancient version of LiquiBase I'm stuck using ...
Override back button to act like home button
...time you need to create a Service to perform something in the background, and your visible Activity simply controls this Service. (I'm sure the Music player works in the same way, so the example in the docs seems a bit misleading.) If that's the case, then your Activity can finish as usual and the ...
Safe integer parsing in Ruby
I have a string, say '123' , and I want to convert it to the integer 123 .
8 Answers
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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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Relative URL to a different port number in a hyperlink?
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It would be nice if this could work, and I don't see why not because : is a reserved character for port separation inside the URI component, so the browser could realistically interpret this as a port relative to this URL, but unfortunately it doesn't and there'...
position: fixed doesn't work on iPad and iPhone
...en struggling with fixed positioning in iPad for a while. I know iScroll and it does not always seem to work (even in their demo). I also know that Sencha has a fix for that, but I couldn't Ctrl + F the source code for that fix.
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Can a variable number of arguments be passed to a function?
... In a case like this call your "manyArgs" by creating a list called "args" and passing that to manyArgs like this "manyArgs(*args)"
– wilbbe01
Feb 16 '11 at 6:02
4
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What is the difference between build.sbt and build.scala?
I started to learn Scala and almost in every tutorial I see a build.sbt file which describes project settings. But now I have installed giter8 and created a project from template. And generated project from template missed build.sbt file, but it have build.scala (which seems used for same pu...
“for loop” with two variables? [duplicate]
...use:
for i, j in zip(range(x), range(y)):
# Stuff...
Note that if x and y are not the same length, zip will truncate to the shortest list. As @abarnert pointed out, if you don't want to truncate to the shortest list, you could use itertools.zip_longest.
UPDATE
Based on the request for "a f...
How should a model be structured in MVC? [closed]
I am just getting a grasp on the MVC framework and I often wonder how much code should go in the model. I tend to have a data access class that has methods like this:
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