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How do I check if a given string is a legal/valid file name under Windows?
..., LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, LPT9 (and avoid AUX.txt, etc)
The file name is all periods
Some optional things to check:
File paths (including the file name) may not have more than 260 characters (that don't use the \?\ prefix)
Unicode file paths (including the file name) with...
Should you ever use protected member variables?
...like:
template <typename T, typename TContainer>
class Base
{
// etc.
protected
TContainer container ;
}
template <typename Key, typename T>
class DerivedMap : public Base<T, std::map<Key, T> > { /* etc. */ }
template <typename Key, typename T>
clas...
Saving interactive Matplotlib figures
...'FigureObject.fig.pickle', 'rb'))
figx.show() # Show the figure, edit it, etc.!
You can even extract the data from the plots:
data = figx.axes[0].lines[0].get_data()
(It works for lines, pcolor & imshow - pcolormesh works with some tricks to reconstruct the flattened data.)
I got the exce...
How to duplicate sys.stdout to a log file?
...ty to write to multiple log files at once, or handle different log levels, etc.
These are all straightforward enough that I'm comfortable leaving them as exercises for the reader. The key insight here is that print just calls a "file-like object" that's assigned to sys.stdout.
...
SQL Server Management Studio alternatives to browse/edit tables and run queries [closed]
...E TABLE NiceTable (id INT IDENTITY (1, 1) PRIMARY KEY, Name VARCHAR(80))); etc etc?
– Reversed Engineer
May 11 '17 at 10:07
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How to handle many-to-many relationships in a RESTful API?
...who referred them to that team, who their coach is/was while on that team, etc etc.
REST depends on caching for efficiency, which requires some consideration for cache atomicity and invalidation. If you POST a new entity to /teams/3/players/ that list will be invalidated, but you don't want the alte...
HTTP GET Request in Node.js Express
...ple, instead of concatenating the chunks you put into an array and join it etc... Hopefully, it gets you started in the right direction:
const http = require('http');
const https = require('https');
/**
* getJSON: RESTful GET request returning JSON object(s)
* @param options: http options objec...
Showing the stack trace from a running Python application
... to continue running (though note that you will probably interrupt any I/O etc at the point you signal, so it isn't fully non-intrusive.
I've another script that does the same thing, except it communicates with the running process through a pipe (to allow for debugging backgrounded processes etc). ...
SQL, Postgres OIDs, What are they and why are they useful?
... handy for tables where you don't have a primary key, have duplicate rows, etc. For example, if you have a table with two identical rows, and you want to delete the oldest of the two, you could do that using the oid column.
OIDs are implemented using 4-byte unsigned integers. They are not unique–...
Why can I use a function before it's defined in JavaScript?
...arsed into executable chunks (variable declarations, function definitions, etc.) But at any point can only use what's been defined in the script before that point.
This is different from other programming contexts that process (compile) all your source code, perhaps link it together with any librar...