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Python Pandas: Get index of rows which column matches certain value
...] returns the ith row of df. i does not refer to the index label, i is a 0-based index.
In contrast, the attribute index returns actual index labels, not numeric row-indices:
df.index[df['BoolCol'] == True].tolist()
or equivalently,
df.index[df['BoolCol']].tolist()
You can see the difference ...
Why do you need explicitly have the “self” argument in a Python method?
...etimes don't.
Python elects to make things like this explicit rather than based on a rule.
Additionally, since nothing is implied or assumed, parts of the implementation are exposed. self.__class__, self.__dict__ and other "internal" structures are available in an obvious way.
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File path to resource in our war/WEB-INF folder?
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What is mod_php?
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What does the X-SourceFiles header do?
...rstood by certain debugging modules in IIS / IIS Express. It contains the base64-encoded path to the source file on disk and is used to link a page's generated output back to that source file. It's only generated for localhost requests, so you don't need to worry about it being displayed to the wo...
How to merge a specific commit in Git
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Note: "git rebase" also changes SHA-1. See also "git rebase vs. git merge ( stackoverflow.com/questions/804115/git-rebase-vs-git-merge ) and "git workflow" ( stackoverflow.com/questions/457927/… ) for cases where "git rebase" is legitim...
What is the best way to filter a Java Collection?
I want to filter a java.util.Collection based on a predicate.
27 Answers
27
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Error: Could not create the Java Virtual Machine Mac OSX Mavericks
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Calling static generic methods
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Yes, this is type inference based on the target of the assignment, as per JLS section 15.12.2.8. To be explicit, you'd call something like:
Foo.<String>createFoo();
shar...
Debug a java application without starting the JVM with debug arguments
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