How to add line dash in Flutter
As a workaround, in your case, you can do something like this and use it const MySeparator()
What is the difference between POST and PUT in HTTP?
Overall: Both PUT and POST can be used for creating. You have to ask, “what are you performing the action upon?”, to distinguish what you should be using. Let’s assume you’re designing an API for asking questions. If you want to use POST, then you would do that to a list of questions. If you … Read more
Pause Console in C++ program
There might be a best way (like using the portable cin.get()), but a good way doesn’t exist. A program that has done its job should quit and give its resources back to the computer. And yes, any usage of system() leads to unportable code, as the parameter is passed to the shell that owns your process. Having pausing-code in your source … Read more
system(“pause”); – Why is it wrong?
It’s frowned upon because it’s a platform-specific hack that has nothing to do with actually learning programming, but instead to get around a feature of the IDE/OS – the console window launched from Visual Studio closes when the program has finished execution, and so the new user doesn’t get to see the output of his … Read more
Renaming column names in Pandas
Just assign it to the .columns attribute:
‘pip’ is not recognized as an internal or external command
You need to add the path of your pip installation to your PATH system variable. By default, pip is installed to C:\Python34\Scripts\pip (pip now comes bundled with new versions of python), so the path “C:\Python34\Scripts” needs to be added to your PATH variable. To check if it is already in your PATH variable, type echo %PATH% at the CMD … Read more
Poker hand range chart visualization in R
EDIT: I’ve essentially answered the OP. I just spent a while learning how text and images work in R, still don’t understand them all too well, but here’s a start to solving your issue. These posts helped me greatly: display a matrix, including the values, as a heatmap Align text inside a plot Here’s a … Read more
Is there a way to create multiline comments in Python?
You can use triple-quoted strings. When they’re not a docstring (the first thing in a class/function/module), they are ignored. (Make sure to indent the leading ”’ appropriately to avoid an IndentationError.) Guido van Rossum (creator of Python) tweeted this as a “pro tip”. However, Python’s style guide, PEP8, favors using consecutive single-line comments, like this: …and this is also what you’ll find … Read more
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
The *args and **kwargs is a common idiom to allow arbitrary number of arguments to functions as described in the section more on defining functions in the Python documentation. The *args will give you all function parameters as a tuple: The **kwargs will give you all keyword arguments except for those corresponding to a formal parameter as a dictionary. Both idioms can be mixed with normal arguments to … Read more
SVG center horizontal and vertical line
For an SVG’s contents to scale with its size, it needs to have a viewBox. Run code snippetExpand snippet In this example, everything scales, including the line width. If that’s not what you want, then you can either use @SirExotic’s approach (using percentage coordinates), or you could set the lines to not scale by using vector-effect: non-scaling-stroke. … Read more