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Safely override C++ virtual functions
...
Since g++ 4.7 it does understand the new C++11 override keyword:
class child : public parent {
public:
// force handle_event to override a existing function in parent
// error out if the function with the correct signature do...
Getting vertical gridlines to appear in line plot in matplotlib
...on to generate a line plot with dates on the x-axis. I'm not sure why they do not appear on the dates and I have tried to search for an answer to this but couldn't find one.
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What is @RenderSection in asp.net MVC
What is the purpose of @RenderSection and how does it function? I understand what bundles do, but I have yet to figure out what this does and it's probably important.
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Get last field using awk substr
... answered Jul 29 '13 at 10:25
fedorqui 'SO stop harming'fedorqui 'SO stop harming'
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Why do I get “unresolved external symbol” errors when using templates? [duplicate]
...member functions in
the template's source file as
"inline" (Update: [this does not work on Visual Studio 2017+]), or
define the member
functions in the template's source
with the "export" keyword.
Unfortunately this isn't supported
by a lot of compilers. (Update: this has been removed from the sta...
Convert datetime to Unix timestamp and convert it back in python
...-01T06:00:00Z are the same time.
You need to read the top of the datetime docs, which explain about timezones and "naive" and "aware" objects.
If your original naive datetime was UTC, the way to recover it is to use utcfromtimestamp instead of fromtimestamp.
On the other hand, if your original na...
Why should a function have only one exit-point? [closed]
...
There are different schools of thought, and it largely comes down to personal preference.
One is that it is less confusing if there is only a single exit point - you have a single path through the method and you know where to look for the exit. On the minus side if you use indentation...
Most efficient way to check for DBNull and then assign to a variable?
...omething. Isn't checking for DBNull exactly what the DataRow.IsNull method does?
I've been using the following two extension methods:
public static T? GetValue<T>(this DataRow row, string columnName) where T : struct
{
if (row.IsNull(columnName))
return null;
return row[colu...
Copy a stream to avoid “stream has already been operated upon or closed”
... efficiency payback if you're only going to use the data once, because you don't have to store it, and streams give you powerful "loop fusion" optimizations that let you flow the whole data efficiently through the pipeline.
If you want to re-use the same data, then by definition you either have t...
Editing dictionary values in a foreach loop
...erator, and any iterator associated with the keys or values collection.
I do see your point, but at the same time it would be odd if the values collection could change mid-iteration - and for simplicity there's only one version number.
The normal way of fixing this sort of thing is to either copy ...