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Select mySQL based only on month and year
... It is index friendly, but strtotime gives you int and you need to convert it to date for mysql first.
– piotrm
Feb 1 '12 at 23:26
...
Is there a way to chain multiple value converters in XAML?
...y Silverlight project.
Here's my implementation of it:
public class ValueConverterGroup : List<IValueConverter>, IValueConverter
{
#region IValueConverter Members
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
...
How to add a new row to an empty numpy array
...it would be much faster to append to a list as in your first example, then convert to a numpy array at the end, since you're really not using numpy as intended during the loop:
In [210]: %%timeit
.....: l = []
.....: for i in xrange(1000):
.....: l.append([3*i+1,3*i+2,3*i+3])
.....:...
Sort a Map by values
...
Java 8 offers a new answer: convert the entries into a stream, and use the comparator combinators from Map.Entry:
Stream<Map.Entry<K,V>> sorted =
map.entrySet().stream()
.sorted(Map.Entry.comparingByValue());
This will let you ...
Converting many 'if else' statements to a cleaner approach [duplicate]
...
You could have a Converter interface. Then you could create a class for each Mimetype like:
public interface Converter {
public void convertToMp3();
public void convertToOgg();
}
public class MpegConverter implements Converter {
...
Python class inherits object
...I am not 101% sure about this point (wether all builtin types were already converted to new-style classes when new-style classes were introduced) - I might just be plain wrong, or this might only have concerned some of the standard lib's (but not builtin) types. But yet I think it should be better t...
Remove duplicate rows in MySQL
...n the backup_employee table
⇒ Using this approach, 1.6M registers were converted into 6k in less than 200s.
Chetan, following this process, you could fast and easily remove all your duplicates and create a UNIQUE constraint by running:
CREATE TABLE tmp_jobs LIKE jobs;
ALTER TABLE tmp_jobs ADD...
Remove duplicate dict in list in Python
...is:
[dict(t) for t in {tuple(d.items()) for d in l}]
The strategy is to convert the list of dictionaries to a list of tuples where the tuples contain the items of the dictionary. Since the tuples can be hashed, you can remove duplicates using set (using a set comprehension here, older python alte...
Find element's index in pandas Series
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Converting to an Index, you can use get_loc
In [1]: myseries = pd.Series([1,4,0,7,5], index=[0,1,2,3,4])
In [3]: Index(myseries).get_loc(7)
Out[3]: 3
In [4]: Index(myseries).get_loc(10)
KeyError: 10
Duplicate handling
I...
Build an ASCII chart of the most commonly used words in a given text [closed]
...'@}/
Explanation:
{ #loop through all characters
32|. #convert to uppercase and duplicate
123%97< #determine if is a letter
n@if #return either the letter or a newline
}% #return an array (of ints)
]''* #convert array to a string with magic
n% ...