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Finding the index of elements based on a condition using python list comprehension
... once you get them?" If you are going to use them to create another list, then in Python, they are an unnecessary middle step. If you want all the values that match a given condition, just use the builtin filter:
matchingVals = filter(lambda x : x>2, a)
Or write your own list comprhension:
...
Android REST client, Sample?
...ned by the REST API directly. Instead, the app only sees the bean Profile.
Then, the lower layer (AsyncTask layer) might look like this:
/**
* An AsyncTask implementation for performing GETs on the Hypothetical REST APIs.
*/
public class GetTask extends AsyncTask<String, String, String>{
...
Difference between a Message Broker and an ESB
...ESB".If the Websphere Broker can "be made" do "all the stuff" an ESB does, then why claim it to be an ESB product?I even have seen a Red Book which shows you "How to Implement" an ESB with Websphere Broker.
– Franklin
Apr 23 '09 at 19:47
...
What is the difference between trie and radix trie data structures?
...at doesn't mean that all tries are radix tries.
If they are[n't] same, then what is the meaning of Radix trie (aka Patricia Trie)?
I assume you meant to write aren't in your question, hence my correction.
Similarly, PATRICIA denotes a specific type of radix trie, but not all radix tries are P...
Adding a cross-reference to a subheading or anchor in another page
...ction" in file other.rst and you want the final HTML to work in a browser, then A.rst would contain:
`This <other.html#section>`__ is a reference to a section in another
file, which works with ``rst2html``. Unfortunately, it does not work
when the HTML is generated through github.
You have ...
Logical operators for boolean indexing in Pandas
....
If in the process of performing logical operation you get a ValueError, then you need to use parentheses for grouping:
(exp1) op (exp2)
For example,
(df['col1'] == x) & (df['col2'] == y)
And so on.
Boolean Indexing: A common operation is to compute boolean masks through logical cond...
How is a tag different from a branch in Git? Which should I use, here?
... Question: if you treat a branch like a tag (that is, you create it, then never update it), is there any real difference?
– Steve Bennett
Feb 16 '12 at 3:22
30
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bool operator ++ and --
...s booleans.
If x is an int, but I am using it as a boolean as per if(x)... then incrementing will mean that whatever its truth value before the operation, it will have a truth-value of true after it (barring overflow).
However, it's impossible to predict the result of -- given knowledge only of the ...
What should be in my .gitignore for an Android Studio project?
...y. When you are familiar with a project, and know these things inside-out, then there is no issue with your approach. But for a developer who is cloning the project for the first time, its just not that practical. I really am just trying to make sure that your approach does not become the norm thats...
What is the difference between NaN and None?
I am reading two columns of a csv file using pandas readcsv() and then assigning the values to a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead ...