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What does “while True” mean in Python?
... always evaluates to boolean "true" and thus executes the loop body indefinitely. It's an idiom that you'll just get used to eventually! Most languages you're likely to encounter have equivalent idioms.
Note that most languages usually have some mechanism for breaking out of the loop early. In the ...
How to use the “number_to_currency” helper method in the model rather than view?
...
It’s not available because its use in a model (typically) violates MVC (and it does seem to in your case). You're taking data and manipulating it for presentation. This, by definition, belongs in the view, not the model.
H...
How to get the pure text without HTML element using JavaScript?
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[2017-07-25] since this continues to be the accepted answer, despite being a very hacky solution, I'm incorporating Gabi's code into it, leaving my own to serve as a bad example.
<style>
.A {background: blue;}
.B {font-style: italic;}
.C {font-weight: bold;}
</style>
<scri...
Android: How to stretch an image to the screen width while maintaining aspect ratio?
...an image (of unknown size, but which is always roughly square) and display it so that it fills the screen horizontally, and stretches vertically to maintain the aspect ratio of the image, on any screen size. Here is my (non-working) code. It stretches the image horizontally, but not vertically, so i...
Split code over multiple lines in an R script
I want to split a line in an R script over multiple lines (because it is too long). How do I do that?
5 Answers
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Java 8 Streams - collect vs reduce
...ollect() vs reduce() ? Does anyone have good, concrete examples of when it's definitely better to go one way or the other?
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How to implement the --verbose or -v option into a script?
... than putting the if in the function, which you might be tempted to do, do it like this:
if verbose:
def verboseprint(*args):
# Print each argument separately so caller doesn't need to
# stuff everything to be printed into a single string
for arg in args:
prin...
Issue with adding common code as git submodule: “already exists in the index”
I'm new to git and would appreciate help with adding submodules.
I've received two projects sharing some common code. The shared code was just copied into the two projects. I created a separate git repo for the common code and removed it from the projects with the plan to add it as a git submodule...
Get number days in a specified month using JavaScript? [duplicate]
..., February is 2, etc). This is
// because we're using 0 as the day so that it returns the last day
// of the last month, so you have to add 1 to the month number
// so it returns the correct amount of days
function daysInMonth (month, year) {
return new Date(year, month, 0).getDate();
}
// Jul...
How to get rid of the 'undeclared selector' warning
I want to use a selector on an NSObject instance without the need for an implemented protocol. For example, there's a category method that should set an error property if the NSObject instance it's called on supports it. This is the code, and the code works as intended:
...