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how to clear the screen in python [duplicate]
...ram in Python but I don't know how to clear the screen.
I use both Windows and Linux and I use commands to clear the screen in those, but I don't know how to do it in Python.
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Test if string is a number in Ruby on Rails
...def is_number? string
true if Float(string) rescue false
end
And then call it like this:
my_string = '12.34'
is_number?( my_string )
# => true
Extend String Class.
If you want to be able to call is_number? directly on the string instead of passing it as a param to your helper function, t...
How to write a Unit Test?
...input.
Now, implement the test by declaring a class, name it anything (Usually something like TestAddingModule), and add the testAdd method to it (i.e. like the one below) :
Write a method, and above it add the @Test annotation.
In the method, run your binary sum and assertEquals(expectedVal,cal...
Split code over multiple lines in an R script
...
Bah, comments are too small. Anyway, @Dirk is very right.
R doesn't need to be told the code starts at the next line. It is smarter than Python ;-) and will just continue to read the next line whenever it considers the statement as "not finished". ...
Targeting position:sticky elements that are currently in a 'stuck' state
...than sticky/fixed */ }
:not(:stuck) { position: sticky; /* Or fixed */ }
And there could be many more edge cases that would be difficult to address.
While it's generally agreed upon that having selectors that match based on certain layout states would be nice, unfortunately major limitations exis...
Send inline image in email
...
@Eric: there was a small issue in this code. in the mail.body just use att.ContentId instead of inline.ContentId
– Amir
May 11 '19 at 4:51
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The role of #ifdef and #ifndef
In this what is the role of #ifdef and #ifndef , and what's the output?
4 Answers
4...
How can I remove all objects but one from the workspace in R?
I have a workspace with lots of objects and I would like to remove all but one. Ideally I would like to avoid having to type rm(obj.1, obj.2... obj.n) . Is it possible to indicate remove all objects but these ones ?
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Call a Javascript function every 5 seconds continuously [duplicate]
...
Do a "recursive" setTimeout of your function, and it will keep being executed every amount of time defined:
function yourFunction(){
// do whatever you like here
setTimeout(yourFunction, 5000);
}
yourFunction();
...
How to resize a VirtualBox vmdk file
... iso from within the virtualbox settings).
P.S. If your new size is too small, you'll get the same error even with your new vdi file.
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