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Polymorphism in C++
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Understanding of / requirements for polymorphism
To understand polymorphism - as the term is used in Computing Science - it helps to start from a simple test for and definition of it. Consider:
Type1 x;
Type2 y;
f(x);
f(y);
Here,...
Should a RESTful 'PUT' operation return something
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The HTTP specification (RFC 2616) has a number of recommendations that are applicable. Here is my interpretation:
HTTP status code 200 OK for a successful PUT of an update to an
existing resource. No response body needed. (Per Section 9.6, 204 No Content is even more appropriat...
LINQ to Entities case sensitive comparison
...Entities which is ultimately convert your Lambda expressions into SQL statements. That means the case sensitivity is at the mercy of your SQL Server which by default has SQL_Latin1_General_CP1_CI_AS Collation and that is NOT case sensitive.
Using ObjectQuery.ToTraceString to see the generated SQL qu...
Selecting the last value of a column
I have a spreadsheet with some values in column G. Some cells are empty in between, and I need to get the last value from that column into another cell.
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argparse module How to add option without any argument?
... suggested use action='store_true':
>>> from argparse import ArgumentParser
>>> p = ArgumentParser()
>>> _ = p.add_argument('-f', '--foo', action='store_true')
>>> args = p.parse_args()
>>> args.foo
False
>>> args = p.parse_args(['-f'])
>>...
How to delete a file or folder?
...ath objects from the Python 3.4+ pathlib module also expose these instance methods:
pathlib.Path.unlink() removes a file or symbolic link.
pathlib.Path.rmdir() removes an empty directory.
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Confused about Service vs Factory
...tant to realize that all Angular services are application singletons. This means that there is only one instance of a given service per injector.
Basically the difference between the service and factory is as follows:
app.service('myService', function() {
// service is just a constructor func...
How to disable visual “dots” in Visual Studio Editor
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writing some characters like '
since the beginning of my programmation, I used some special character like "
3 Answers
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Forking from GitHub to Bitbucket
... zip/tar and replace the folder, then commit and push, but maybe with a ‘merge’(?).
6 Answers
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