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How does the bitwise complement operator (~ tilde) work?
...numbers are stored in 2's complement form,
the acquired result we have to convert into 2's complement( first perform 1's complement and just add 1 to 1's complement).
all the one will become zeros,except most significant bit 1(which is our sign representation of the number,that means for remaining...
How to migrate/convert from SVN to Mercurial (hg) on windows
...alled as well as the CollabNet Subversion Command-Line Client.
<Enable Convert Extension w/ Tortoise Hg 2>
Many thanks to bgever for pointing out in the comments that with TortoiseHg 2.0, enabling the convert extension is easier than ever. As he says
With TortoiseHG 2.0 this has been ma...
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)
{
...
Equals(=) vs. LIKE
...archar2. If you compare char with char. Before compare the database first convert the length of first 'variable' to the same of second. If you compare char and varchar2 the database will do nothing. docs.oracle.com/cd/A64702_01/doc/server.805/a58236/c_char.htm
– xild
...
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 {
...
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 ...
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...