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Reading a huge .csv file
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I also simplified your filter test; the logic is the same but more concise.
Because you are only matching a single sequence of rows matching the criterion, you could also use:
import csv
from itertools import dropwhile, takewhile
def getstuff(filename, criterion):
with open(filen...
What is the best django model field to use to represent a US dollar amount?
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MongoDB SELECT COUNT GROUP BY
...noting here that $sortByCount is actually a "pseudo operator" like several more aggregation stage operators introduced from MongoDB 3.4. All they really do is expand into their respective aggregation stages. In this case a $group with $sum: 1 as shown in existing answers and an additional $sort sta...
How do you tell someone they're writing bad code? [closed]
...s other than what I've already decided on. With the latter tone, I'm much more likely to see the light.
– Bill the Lizard
Aug 5 '09 at 18:33
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Why would you use an ivar?
...ur locks must typically be reentrant and you will often end up making many more acquisitions (significantly more at times).
Program Correctness
Since the subclasses can override any method, you may eventually see there is a semantic difference between writing to the interface versus managing your st...
How big can a MySQL database get before performance starts to degrade
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The database size does matter. If you have more than one table with more than a million records, then performance starts indeed to degrade. The number of records does of course affect the performance: MySQL can be slow with large tables. If you hit one million records...
How to create a file with a given size in Linux?
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Oh, that might be more efficient than my approach because it does it all in one block. Good idea.
– Paul Tomblin
Sep 26 '08 at 13:02
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Limit Decimal Places in Android EditText
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More elegant way would be using a regular expression ( regex ) as follows:
public class DecimalDigitsInputFilter implements InputFilter {
Pattern mPattern;
public DecimalDigitsInputFilter(int digitsBeforeZero,int digitsAft...
In Python, how do I determine if an object is iterable?
...ter() in our code as well for this purpose, but I've lately started to get more and more annoyed by objects which only have __getitem__ being considered iterable. There are valid reasons to have __getitem__ in a non-iterable object and with them the above code doesn't work well. As a real life examp...
Setting action for back button in navigation controller
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