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Android ListView headers
...
+100
Here's how I do it, the keys are getItemViewType and getViewTypeCount in the Adapter class. getViewTypeCount returns how many types...
What is polymorphism, what is it for, and how is it used?
...s etc are instantiated.
petraeus.Advise(); // # Petraeus says send 100,000 troops to Fallujah
condolezza.Advise(); // # she says negotiate trade deal with Iran
healthOfficials.Advise(); // # they say we need to spend $50 billion on ObamaCare
}
}
This approach allows the...
Why are floating point numbers inaccurate?
...ple, 9.2, here's what we get:
>>> float_to_bin_parts(9.2)
['0', '10000000010', '0010011001100110011001100110011001100110011001100110']
Interpreting the Data
You'll see I've split the return value into three components. These components are:
Sign
Exponent
Mantissa (also called Signif...
Algorithm to generate a crossword
...n.
Once the word/clue file got up to a certain size (and it was adding 50-100 clues a day for this client), there was rarely a case of more than two or three manual fix ups that had to be done for each crossword.
share
...
JavaScript hashmap equivalent
...d executes instantaneously. All "hash tables in JavaScript" I saw were >100 lines of code, and involved multiple objects. Compare it with: dict[key] = value.
Another point: is it even possible to beat a performance of a primordial object written in a low-level language, using JavaScript and the v...
MySQL order by before group by
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+100
Using an ORDER BY in a subquery is not the best solution to this problem.
The best solution to get the max(post_date) by author i...
WebView and HTML5
...) mContext).getWindow().setFeatureInt(Window.FEATURE_PROGRESS, newProgress*100);
}
@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
}
}
...
Good way of getting the user's location in Android
... meters.
the Criteria.ACCURACY_HIGH criterion should give you errors below 100m, which is not as good as GPS can be, but matches your needs.
You also need to monitor the status of your location provider, and switch to another provider if it gets unavailable or disabled by the user.
The passive provi...
Understanding slice notation
...ared to indexing, Python slicing is bizarrely error-proof:
>>> p[100:200]
[]
>>> p[int(2e99):int(1e99)]
[]
This can come in handy sometimes, but it can also lead to somewhat strange behavior:
>>> p
['P', 'y', 't', 'h', 'o', 'n']
>>> p[int(2e99):int(1e99)] =...
How to prevent a dialog from closing when a button is clicked
...
Daniel Nugent
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answered Oct 3 '11 at 14:34
Tom BollwittTom Bollwitt
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