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Why do we need Abstract factory design pattern?
...ur application supports different data stores. (e.g. a SQL Database and an XML file). You have two different data access interfaces e.g. an IReadableStoreand IWritableStore defining the common methods expected by your application regardless of the type of data source used.
Which type of data source...
How to determine whether a Pandas Column contains a particular value
... 'b', 'c'], dtype=object)
In [22]: 'a' in s.unique()
Out[22]: True
or a python set:
In [23]: set(s)
Out[23]: {'a', 'b', 'c'}
In [24]: 'a' in set(s)
Out[24]: True
As pointed out by @DSM, it may be more efficient (especially if you're just doing this for one value) to just use in directly on th...
How to ignore certain files in Git
...b
*.suo
*.tlb
*.tlh
*.bak
*.[Cc]ache
*.ilk
*.log
*.lib
*.sbr
*.sdf
*.pyc
*.xml
ipch/
obj/
[Bb]in
[Dd]ebug*/
[Rr]elease*/
Ankh.NoLoad
#Tooling
_ReSharper*/
*.resharper
[Tt]est[Rr]esult*
#Project files
[Bb]uild/
#Subversion files
.svn
# Office Temp Files
~$*
Once you have this, you need to add i...
Cannot make a static reference to the non-static method
...ava. Getting an error when inserting String value from R.string resource XML file:
7 Answers
...
Better way to shuffle two numpy arrays in unison
...at numpy.random.shuffle() operates on arbitrary mutable sequences, such as Python lists or NumPy arrays. The array shape does not matter, only the length of the sequence. This is very unlikely to change in my opinion.
– Sven Marnach
Jan 5 '11 at 19:11
...
How do I return the response from an asynchronous call?
...(url) {
return new Promise(function(resolve, reject) {
var xhr = new XMLHttpRequest();
xhr.onload = function() {
resolve(this.responseText);
};
xhr.onerror = reject;
xhr.open('GET', url);
xhr.send();
});
}
ajax("/echo/json")
.then(function(result) {
// Code d...
Go install fails with error: no install location for directory xxx outside GOPATH
...uages do in fact use these, but maybe they're not as visible. For example, Python (a language famous for its simplicity) has PYTHONHOME instead of GOROOT and PYTHONPATH instead of GOPATH. Even (GC)C has LIBRARY_PATH, C_INCLUDE_PATH, etc.
– Hut8
Jan 31 '16 at 0:...
TemplateDoesNotExist - Django Error
...
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Check if string matches pattern
....search() will match a pattern anywhere in string. (See also: https://docs.python.org/library/re.html#search-vs-match)
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C++ code file extension? .cc vs .cpp [closed]
... .cc:
Google: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml
ICL : http://www.doc.ic.ac.uk/lab/cplus/c++.rules/chap4.html#sect2
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