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What is the difference between instanceof and Class.isAssignableFrom(…)?
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When using instanceof, you need to know the class of B at compile time. When using isAssignableFrom() it can be dynamic and change during runtime.
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im...
Iterating over dictionaries using 'for' loops
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key is just a variable name.
for key in d:
will simply loop over the keys in the dictionary, rather than the keys and values. To loop over both key and value you can use the following:
For Python 3.x:
for key, value i...
How to trace the path in a Breadth-First Search?
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You should have look at http://en.wikipedia.org/wiki/Breadth-first_search first.
Below is a quick implementation, in which I used a list of list to represent the queue of paths.
# graph is in adjacent list representation
graph = {
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Get individual query parameters from Uri [duplicate]
I have a uri string like: http://example.com/file?a=1&b=2&c=string%20param
9 Answers
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Android: When should I use a Handler() and when should I use a Thread?
When I need something to run asynchronously , such as a long running task or a logic that uses the network, or for whatever reason,
Starting a new Thread and running it works fine.
Creating a Handler and running it works as well.
What's the difference? When should I use each one?
What are the...
specify project file of a solution using msbuild
...ommandline for building a particular project of a solution using msbuild like we do with devenv.com.In devenv.com we can specify a project of a solution using following commandline
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What's the better (cleaner) way to ignore output in PowerShell? [closed]
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I just did some tests of the four options that I know about.
Measure-Command {$(1..1000) | Out-Null}
TotalMilliseconds : 76.211
Measure-Command {[Void]$(1..1000)}
TotalMilliseconds : 0.217
Measure-Command {$(1..1000) > $null}
TotalMilliseconds : 0.2478
Measure-Com...
How to find the nearest parent of a Git branch?
Let's say I have the following local repository with a commit tree like this:
20 Answers
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abort, terminate or exit?
... and simply return from there. This means that you are guaranteed that stack unwinding happens correctly and all destructors are called. In other words:
int main() {
try {
// your stuff
}
catch( ... ) {
return 1; // or whatever
}
}
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Evaluate if list is empty JSTL
...ed Nov 22 '19 at 10:05
informatik01
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answered Sep 23 '09 at 2:05
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