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Manually raising (throwing) an exception in Python
...d raising a generic Exception. To catch it, you'll have to catch all other more specific exceptions that subclass it.
Problem 1: Hiding bugs
raise Exception('I know Python!') # Don't! If you catch, likely to hide bugs.
For example:
def demo_bad_catch():
try:
raise ValueError('Repres...
How to execute more than one maven command in bat file?
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Joey's answer is great, but maybe a more complete code example will help anyone else like me who's also figuring out a similar problem of building multiple maven projects from a batch file in Windows:
REM maven itself uses a batch file so each mvn must be prec...
When and why should I use fragments in Android applications? [duplicate]
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Fragments are more of a UI benefit in my opinion. It's convenient for the user sometimes to see two different views of two different classes on the same screen. If, in your moment of creativity, you decide it would be nice to display you...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
...ocess has multiple threads (and this process is running on a computer with more than one processor) it could potentially exceed the wall clock time reported by Real (which usually occurs). Note that in the output these figures include the User and Sys time of all child processes (and their descenda...
Python Empty Generator Function
...just replaces a no-op if statement with a no-op yield statement. But it is more idiomatic. Note that just using yield doesn't work.
>>> def f():
... yield
...
>>> list(f())
[None]
Why not just use iter(())?
This question asks specifically about an empty generator function....
Difference between CTE and SubQuery?
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Sorry, I should have been more clearer in the my question. What would be the difference between CTE and Subquery in the context where CTE is used LIKE subquery?
– dance2die
Apr 1 '09 at 19:22
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Concatenate text files with Windows command line, dropping leading lines
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more +2 file2.txt > temp
type temp file1.txt > out.txt
or you can use copy. See copy /? for more.
copy /b temp+file1.txt out.txt
share
...
How to decide between MonoTouch and Objective-C? [closed]
...acks (Apple and Mono), but for me MonoTouch makes the experience that much more fun. I haven't stopped using Apple's tools, but that's mainly because I really do enjoy both stacks. I love the iPhone, and I love .Net. In that case, for me, MonoTouch was a no-brainer.
Do you feel comfortable working w...
What is sharding and why is it important?
...ership easily and automatically, and query only the relevant shard.
Some more information about sharding:
Firstly, each database server is identical, having the same table structure. Secondly, the data records are logically split up in a sharded database. Unlike the partitioned database, each ...
Why should I use the keyword “final” on a method parameter in Java?
...gument, then don’t bother. In my own work, I add final only in longer or more involved code where an argument might mistaken for a local or member variable.
Another case added for the completeness
public class MyClass {
private int x;
//getters and setters
}
void doSomething( final MyC...